US645576A - System of transmission of electrical energy. - Google Patents

System of transmission of electrical energy. Download PDF

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US645576A
US645576A US1897650343D US645576A US 645576 A US645576 A US 645576A US 1897650343 D US1897650343 D US 1897650343D US 645576 A US645576 A US 645576A
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energy
terminal
coil
impulses
electrical energy
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Nikola Tesla
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Nikola Tesla
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/38Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40Transmitting circuits; Receiving circuits
    • H04L25/49Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4902Pulse width modulation; Pulse position modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14Spectrum sharing arrangements between different networks

Description

-. SYSTEII 0F TRAB IIIIIIIIIIIIIIIIIIIIIIIII Y.

' d 20, I90 I N. TEN-A. Patenfe ylfiar 0 I To (all whom it may concern:

Be it known that I, NIKOLATESLA, acit iY-en UNITED STATES PATENT OFFICE.

NIKOLA TESLA, OF NE\V YORK, N. Y.

SYSTEM OF TRANSMISSION OF ELECTRICAL ENERGY;

SPECIFICATION forming part of Letters Patent No. 645,576, dated March 20, 1900. Application filed September 2, 1897. Serial No. 650,343. (No model.) I

of the United States, residing at New York, in the county and State of New York, have invented certain new and useful Improvements in Systems of Transmission of ElectricalEnergy, of which the following is a specification, reference being had to the drawing accompanying and forming a part of thesame.

It has been well known heretofore that by rarefying the air inclosed in a vesselits insulating properties are impaired to such an extent that it becomes what may be considered as a true conductor, although one of admittedly very high resistance. The practical information in this regard has been derived from observations necessarily limited in their scope by the character of the apparatus or means heretofore known and the quality of the electrical effects producible. thereby. Thus it has been shown by William (-rookes in his classical researches, which have so far served as the chief source of knowledge of this subject, that all gases behave as excellent insulators until rare lied to a point'correspon din g to a barometric pressure of about seventyfive millimeters, and even at this Very low pressure the discharge of a high-tension induction-coil passes through only a part of the attenuated gas in the form of a luminous thread or are, a still further and considerable diminution of the pressure being required to render the entire mass of the gas inclosed in a vessel conducting. While this is true in every particular so long as electromotive or current impulses such as are obtainable with ordinary forms of apparatusare employed, I have found that neither the general behavior of the gases nor the known relations between electrical conductivity and barometric pressure are in conformity with these observations when impulses are used such as are producible by methods and apparatus devised by me and which have peculiar and hitherto unobserved properties and are of effective electromotive forces, measuring many hundred thousands or millions of volts. Through the continuous perfectionof these methods and apparatus and the investigation of the 5c actions of these current impulses I have been unknown. Among these and bearing directly upon the subject of my present application are the following: First, that atmospheric or other gases, even under normal pressure,when' they are known to behave as perfect insulators, are in a large measure deprived of their dielectric properties by being subjected to the in fluence of electromotive impulses of the character and magnitude I have referred to and assume conducting and other qualities which have been so far observed only in gases greatly attenuated or heated to a high temperature, and, second,that the conductivity imparted to the air or gases increases very rapidly both with the augmentation of the-applied electrical pressure and with the. degree of rarefaction, the law in thislatter respect be ing, however, quite different from that heretofore established. In illustrationof these facts a few observations, which I have made with apparatus devised for the purposes here contemplated, may be cited. For example, a conductor or terminal, to which impulses such as those here considered are supplied, but which is otherwise insulated in space and is remote from any conducting-bodies, is surrounded by a luminous flame-like brush or discharge often covering many hundreds or even as much as several thousands of square feet of surface, this striking phenomenon clearly attesting the high degree of conductivity which the atmosphere attains under the influence of the immence electrical stresses to which it is subjected. This influence is, however, not confined to that portion of the atmosphere which is discernible by the eye as luminous and which, as has been the case in some in stances actually observed, may fill the space within a spherical or cylindrical envelop of a diameter of sixty feet or more, but reaches out to far remote regions,the insulating quali- 'tinuously enlarges as time goes on, and the discharge is allowed to pass not unlike a con-' 5 flagration which slowly spreads, this being possibly due to the gradual electrification or ionization of the air or to the formation of less insulating gaseous compounds. It is, furthermore, a fact that such discharges of extreme tensions, approximating those of lightning, manifest a marked tendency to pass upward away from the ground,which maybe due to electrostatic repulsion, or possibly to slight heating and consequent rising of the electrified or ionized air. These latter observations make it appear probable that a discharge of this character allowed to escape into the atmosphere from a terminal maintained at a great height will gradually leak through and establish a good conducting-path to more elevated and better conducting air strata, a process which possibly takes place in silent lightning discharges frequently witnessed on hot and sultry days. It will be apparent to what an extent the conductivity imparted to the air is enhanced by the increase ofthe electromotive force of the impulses when it is stated that insome instances the area covered by the flame discharge mentioned was enlarged 'more than sixfold by an augmentation of the electrical pressure, amounting scarcely to more than fifty per cent. As to the influence of -rarefaction upon the electric conductivity imparted to the gases it is noteworthy that, whereas the atmospheric,

or other gases begin ordinarily to manifest this quality at something like seventy-five millimeters barometric pressure with theimpulses of excessive electromotive force to which I- have referred, the conductivity, as already pointed out, begins even at normal pressure and continuously increases with the degree of tenuity of the gas, so that at, say, one hundred and thirty millimeters pressure, when the gases are known to be still nearly perfect insulators for ordinary clectromotive forces, they behave toward electromotive impulses of several millions of volts like excellent conductors, as though they were rarefied to a much higher degree. By the discovery of these facts and the perfection of means for producing in a safe, economical, and thoroughly-practicable manner current impulses of the character described it becomes possible to transmit through easily-accessible andonly moderately-rarefied strata of the atmosphere electrical energy not merely in insignificant quantities, such as are suitable for theoperv ation of delicate instruments and like purin its theoretical aspect and in its practical poses, but also in quantities suitable for industrial uses on alarge scale up'to practically any amount and, according to all the experimental evidence I have obtained, to any terrestrial distance. To conduceto a better understanding of this method of transmission of energy and to distinguish it clearly, both hearing, from other known modes of transmission, it is useful to state that all previous eiforts made by myself and others for transmitting electrical energy to a distance without the use of metallic conductors, chiefly with the object of actuating sensitive receivers, have been based, in so far as the atmosphere is concerned,upon those qualities which it possesses by virtue of its being an excellent insulator, and all these attempts would have been obviously recognized as ineffective if not entirely futile in the presence of a conducting atmosphere or medium. The utilization of any conducting properties of the air for purposes of transmission of energy,

has been hitherto out of the question in the absence of apparatus suitable for meeting the many and difficnlt requirements, although it has long been known or surmised that atmospheric strata at great altitudes-say fifteen or more miles above sca-level-are, or should be, ina measure, conducting; but assuming even that the indispensable means should have been produced then still a difficulty, which in the present state of the mechanical arts must be considered as iusuperable, would remain-namely, that of 'maintaining terminals at elevations of fifteen miles or more above the level of the sea. Through my discoveries before mentioned and the production of adequate means the necessity of maintaining terminals at such inaccessible altitudes is obviated and a practical method and system of transmission of energy through the natural media is aiforded essentially different from all those available up to the present time and possessing, moreover, this important practical advantage, that whereas in all such methods or systems heretofore used or proposed but a minute fraction of the total energy expended by the generator or transmitter was recoverable in a distant receiving apparatus by my method and appliances it is possible to utilize by far the greater portion of the energy of the source and in any localityhowever remote from the same.

Expressed briefly, my present invention, based upon these discoveries, consists then in producing at one point an electrical pressure of such character and magnitude as to,

cause thereby a current to traverse elevated strata of the air between the point of genera tion and a distant point at which the energy is to be received and utilized.

. In the accompanying drawing a general arrangement of apparatus is diagrammatically illustrated such as I contemplate employing in the carrying out of my invention on an industrial scale-as, for instance, for lighting distant cities or districts from places where cheap power is obtainable.

Referring to the drawing, A is a coil, generally of many turns and of 'a very large diameter, wound in spiral form either about a magnetic core or not, as may be found necessary. C is a second coil, formed of a conductor of. much larger section and smaller IIO transformer.

length,wound around and in proximity to the coil A. In the transmitting apparatus the coilA constitutes the high-tension secondary and the coil 0 the primary of much lower tension of a transformer. In the circuit of the primary 0 is included a suitable source of current G. One terminal of the secondary A is at the center of the spiral coil, and from this terminal the current is led bya conductor B to a terminal D, preferably of large surface, formed or maintained by such means as a balloon at an elevation suitable for the purposes of transmission, as before described. The other terminal of the secondary A is connected to earth and, if desired, also to the primary in order that the latter may be at substantially the same potential as the adjacent portions of the secondary,.thus insuring safety. At the receiving-station a transformer of similar construction is employed; but in this case the coil A, of relatively-thin wire, constitutes the primary and the coil 0', of thick wire or cable, the secondary of the In the circuit of the latter are included lamps L, motors M, or other devices for utilizing the current. The elevated terminal D is connected with the center. of the coil A, and the other terminal of said coil is connected to earth and preferably, also, to the coil 0 for the reasons above stated.

It will be observed that in coils of the character described the potential gradually increases with the number of turns toward the center, and the difference of potential between the adjacent turns being comparatively small a very high potential, impracticable with ordinary coils, may be successfully obtained. It will be, furthermore, noted that no matter to what an extent the coils may be modified in design and construction, owing to their general arrangement and manner of connection, as illustrated, those portions of the wire or apparatus which are highly charged will be out of reach, while those parts of the saine which are liable to be approached, touched, or handled will be at or nearly the same potential as the adjacent portions of the ground, this insuring, both in the transmitting and receiving apparatus and regardless of the magnitude of the electrical pressure used, perfect personal safety, which is best evidenced by the fact that although such extreme pressures of many millions of volts have been for a number of years continuous-1y experimented with no injury has been sustained neither by myself or any of my assistants.

The length of the'thin-wire coil in each transformer should be approximately onequarter of the wave length of the electric disturbance in the circuit, this estimate being based ,on the velocity of propagation of the disturbaiice through the coil itself and the circuit with which it is designed to be used. By Way of illustration if the rate at which the current traverses the circuit, including the coil, be one hundred and eighty-five thousand miles per second then a frequency of nine hundred and twenty five per second would maintain nine hundred and twenty-five stationary waves in a circuit one hundred and eighty-five thousand miles long-and each wave would be two hundred miles in length. For such a low frequency, to which I shall resort only when itds indispensable to operate motors of the ordinary kind under the conditions above assumed, I would use a secondary of fifty miles in length. By such an adjustment or porportioning of the length of wire in the secondary coil or coils the points of highest potential are made to coincide with the elevated terminalsD D, and it should be understood that whatever length be given to the wires this condition should be complied with in order to attain the best results.

I As the main requirement in carrying out my invention is to produce currents of an exeessively-high potential, this object will be facilitated by usinga primary current oi. very considerable frequency, since the electromo: tive force obtainable with a given length of conductor is proportionate to the frequency; but the frequency of the current is in a large measure arbitrary, for if the potential be sufiiciently high and if the terminals of the coils be maintained at the proper altitudes the action described will take place, and a current will be transmitted through the elevated air strata, which will encounter little and possibly even less resistance than ifconveyed through a copper wire of a practicable size. Accordingly the construction of the apparatus may be in many details greatly varied; butin order to enable any person skilled in the mechanical andelectrical arts to utilize to advantage in the practical applications" of my system the experience I have so far gained the following particulars of a model plant which has been long in use and which was constructed for the purpose of obtaining further data to be used in the carrying out of my invention on a large scale are given. The transmitting apparatus was in this case one of my electrical oscillators, which are transformers of a special type,now well known and characterized by the passage of oscillatory discharges of a condenser through the primary. The source G, forming one of the elements of the transmitter, was a condenser of a capacity of about four one-h undredths of a microfarad and was charged from a generator of alternating currentsof fifty thousand volts pressure and discharged by means of a mechanically-operated break five thousand times per second through the primary O. The latter consisted of a single turn of stout stranded cable of inappreciable resistance andof an inductance of about eight thousand centimeters, the diameter of the loop being very nearly two hundred and forty-four centimcters. The total inductance of the primary circuit was approximately ten thousand centimeters, so that the primary circuit vibrated generally. according to adjustment,

IIO

from two hundred and thirty thousand to two hundred and fifty thousand times per second. The high-tension coil Ain the form of a flat spiral was composed of fifty turns of heavilyinsulated cable No. 8 wound in one single layer, the turns beginning close to the primary loop and ending near its center. The outer end of the secondary or high-tension coil A was connected to the ground, as illustrated, while the free end was led to a terminal placed in the rarefied airstratum through which the energy was to be transmitted, which was contained in an insulating-tube of alength of fifty feet or more, within which a barometric pressure varying from about one hundred and twenty to one hundred and fifty millimeters was maintained by means of a mechanical suction-pump. The receivingtransformer was similarly proportioned, the ratio of conversion being the reciprocal of that of the transmitter, and the primary hightension coil A was connected, as illustrated, with the end near the low-tension coil to the ground and with the free end to a wire or plate likewise placed in the rarefied air stratum and at the distance named from the transmitting-terminal. The primary and secondary circuits in the transmitting apparatus being carefully synchronized,an electromotive force from two to four million volts and more was obtainable at the terminals of the secondary coilA, the discharge passing freely through the attenuated air stratum maintained at the above barometric pressures, and it was easy under these conditions to transmit with faireconomy considerable amounts of energy, such as are of industrial moment, to the receiving apparatus for supplying from i the secondary coil 0' lamps L or kindred devices. The results were particularly satisfactory when the primary coil or system A, with its secondary O, was carefully adjusted, so as to vibrate in synchronism with the transmitting coilor system A C. I have, however, found no difiiiculty in producing with apparatus of substantially the same design and construction electromotive forces exceedstance, not so much due to a large ratio of transformation as to the joint elfect of the capacities. and inductances in the synchronized circuits, which effect is enhanced bya high frequency, and it'will be obviously up- The high electromotive force ob- ,tained at the terminals of coil or conductor A was, as will be seen, in the preceding inderstood that if thelatter be reduced a greater ratio of transformation should be resorted to, especially in cases in which it may be deemed of advantage to suppress as much as possible, and particularly in the transmitting-coil A, the rise of pressure due to the above effect and to obtain the necessary electromotive force solely by a large transformation ratio.

While electromotive forces such as are produced by the apparatus just described may be suflicient for many purposes to which my system will or may be applied, I wish to state that I contemplate using in an industrial undertaking of this kind forces greatly inexcess of these, and with mypresent knowledge and experience in this novel field I would estimate them to range from twenty to fifty million volts and possibly more. By the use of these much greater forces larger amounts of energy may be conveyed through the atmosphere to remote places or regions, and the distance of transmission may be thus extended practically without limit.

As to the elevation of the terminals D D it is obvious that it will be determined by a number of things, as by the amount and quality of the work to be performed, by the local I density and other conditions of the atmosphere, by the character of the surrounding country, and such considerations as may present themselves in individual instances. Thus if' there be high mountains in the vicinity the terminals should be at a greater height, and generally they should always be, if practicable, at altitudes much greaterthan those of the highest objects near them in order to avoid as much as possible the loss by leakage. In some cases when small amounts of energy are required the high elevation of the terminals, and more particularly of the receivingterminal D, may not be necessary, since, especially when the frequency of the currents is very high, a sufficient amount of energy may be collected at that terminal by electrostatic induction from the upper air strata, which are rendered conducting by the active terminal of the transmitter or through which the currents from the same are conveyed.

With reference to the facts which have been pointed out above it will be seen that the altitudes required for the transmission of considerable amounts of electrical energy in accordance with this method are such as are easily accessible and at which terminals can be safely maintained, as by the aid of captive balloons supplied continuously with gas from reservoirs and held-in position securely by steel wires or by any other means, devices, or expedients, such as may be contrived and perfected byingenious and skilled engineers. From my experiments and observg tions I conclude that with electromotive impulses not greatly exceeding fifteen or twenty million volts the energy of many thousands of horse-power may be transmitted over vast distances, measured by many hundreds and even thousands of miles, with terminals not more than thirty to thirty-five thousand feet above the level of the sea, and even this comparatively-small elevation will be required chiefly for reasons of economy, and, if desired, it may be considerably reduced, since by such means as have been described practically any potential that is desired may be obtained, the currents through the air strata may be rendered very small, whereby the loss in the transmission may be reduced.

It will be understood that the transmitting as well as the receiving coils, transformers, or other apparatus may be in some cases movable-as, for example, when they are carried by vessels floating in the air or by ships at sea. In such a case, or generally, the connection of one of the terminals of the hightension coil 01' coils to the ground may not be permanent, but may be intermittently or inductively established, and any such or similar modifications I shall consider as within the scope of my invention.

While the description here given contemplates chiefly a method and system of energy transmission to a distance through the natural media for industrial purposes, the principles which I have herein disclosed and the apparatus which I have shown will obviously have many othervaluable uses-as, for instance, when it is desired to transmit intelligible messages to great distances, or to illuminate upper strata of the air, or to produce, designedly, any useful changes in the condition of the atmosphere, or to manufacture from the gases of the same products, as nitric acid, fertilizing compounds, orthe like, by the action of such current impulses, for all of which and for many other valuable purposes they are eminently suitable, and I do not wish to limit myself in this respect. Obviously, also, certain features of my invention here disclosed will be useful as disconnected from the method itself-as,-for example, in

other systems of energy transmission, for

whatever purpose they may be intended, the

transmitting and receiving transformers arranged and. connected as illustrated, the feature of a transmitting and receiving coil or conductor, both connected to the ground and to an elevated terminal and adjusted so as to vibrate in synchronism, the proportioning of such conductors or coils; as abovespecified', the feature of. a receiving-transformer with its primary connected to earth and to an elevated terminal and having the operative devices inits secondary, and other. features or particulars, such as have been deseribed in this specification or will readily 1. The method hereinbefore described of transmitting electrical energy through the,

natural media, which consists in producing at a generating-station a very high electrical pressure, causing thereby a propagation or flow of electrical energy, by conduction, through the earth and the air strata, and collecting or receiving at a distant point the electrical energy so propagated or caused to flow.

2. The method hereinbefore described of transmitting electrical energy, which consists in producing at a-generating-station a very high eleclrical'prcssm'e, conducting the current caused thereby to earth and to a terminal at an elevation at which the atmosphere serves as a conductor therefor, and collecting the current by a second elevated terminal at a distance from the first.

3. The method hereinbefore described of transmitting electrical energy through the natural media,-which consists in producing between the earth and a generator-terminal elevated above the same, at a generating-station, a sufficiently-high electromotive force to render elevated air strata conducting, causing thereby a propagation or flow of electrical energy, by'conduction, through the air strata,

' and collecting or receiving at a point distant from the generating station the electrical energy so propagated or caused to flow.

4. The method hereinbefore described of transmitting electrical energy through the natural media, which consists in producing between the earth and a generator-terminal elevated above the-same, at a gen crating-station, a sufficiently-high electromotive force to render the air strata at or near the elevated terminal conduct'ing,causin g thereby a propagation or How of electrical energy, by conduction, through the air strata, and collecting or receiving at a point distant from the generating-station the electrical energy so propa gated or caused to flow.

ICC

5. The method hereinbefore described of transmitting electrical energy through the natural media, which consists in producing between-the earth and a. generator-terminal elevated above the same, at a generating-station, electrical impulses of a sui'liciently-high point distant from the generating-station, the energy of the current impulses by means of a circuit synchronized with the impulses.

G. The method hercinbetorc described of transmitting electrical energy through the natural media, which consists in producing between the earth and a generator-terminal elevated above the same, at a generating-station, electrical impulses of a sufliciently-high electromotive force to'render the air strata at or near the elevated terminal conducting, causing thereby current impulses to pass through the air strata, and collecting or receiving at a point distant from the generating-station the energy of the current impulses by means of a circuit synchronized with the impulses.

'7. The method hereinbefore described of transmitting electrical energy through the natural media, which consists in producing between the earth and a generator-terminal elevated above the same, at a generatingstation, electrical impulses of a wave length so related to the length of the generating circuit or conductor as to produce the maximum potential at'the elevated terminal, and of sufficiently-high electromotive force to render elevated air strata conducting, causing thereby a propagation of electrical impulses through the air strata, and collecting or receiving at a point distant from the generating-station the energy of such impulses by means of a receiving-circuit having a-length of conductor similarly related to the wave length of the impulses.

8. The method hereinbefore' described of transmitting electrical energy through the natural media, which consists in producing between the earth and agenerator-terminal elevated above the same, at a generating-station, a sufiiciently-high electromotive force to render elevated air strata conducting, causin g thereby a propagation or flow of electrical energy through the air strata, by conduction, collecting or receiving the energy so transmitted by means of a receiving-circuit at a point distant from the generating station, us ing the receiving-circuit to energize a secondary circuit, and operating translating devices by means of the energy so obtained in the secon'dary circuit.

9. The method hereinbefore described of transmitting electrical energy through the natural media, which consists in generating current impulses of relatively-low electromotive force at a generating-station, utilizing such impulses to energize the primary of a transformer, generating by means of such primary circuit impulses in a secondary surrounding by the primary and connected to the earth and to an elevated terminal, of sufficientlyyhigh electromotive force to render elevated air strata conducting, causing thereby impulses to be propagated through the air strata, collecting or receiving the energy of such impulses, at .a point distant from the generating-station, by means of a receivingcircuit connected to the earthand to an elevated terminal, and utilizing the 'energy so received to energizeasecondary circuitof low potential surrounding the receiving-circuit.

' NIKOLA TESL'A.

Witnesses: M. LAWsoN DYER, G. W. MARTLING.

US645576A 1897-09-02 1897-09-02 System of transmission of electrical energy. Expired - Lifetime US645576A (en)

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US20060082334A1 (en) * 2001-07-19 2006-04-20 Correa Paulo N Energy conversion systems
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US20100148589A1 (en) * 2008-10-01 2010-06-17 Hamam Rafif E Efficient near-field wireless energy transfer using adiabatic system variations
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US20100214177A1 (en) * 2009-02-26 2010-08-26 Harris Corporation, Corporation of the State of Delawre Wireless communications including an antenna for wireless power transmission and data communication and associated methods
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US8241204B2 (en) 2008-08-29 2012-08-14 Ethicon Endo-Surgery, Inc. Articulating end cap
US8252057B2 (en) 2009-01-30 2012-08-28 Ethicon Endo-Surgery, Inc. Surgical access device
US8262563B2 (en) 2008-07-14 2012-09-11 Ethicon Endo-Surgery, Inc. Endoscopic translumenal articulatable steerable overtube
US8262655B2 (en) 2007-11-21 2012-09-11 Ethicon Endo-Surgery, Inc. Bipolar forceps
US8262680B2 (en) 2008-03-10 2012-09-11 Ethicon Endo-Surgery, Inc. Anastomotic device
US8304935B2 (en) 2008-09-27 2012-11-06 Witricity Corporation Wireless energy transfer using field shaping to reduce loss
US8317806B2 (en) 2008-05-30 2012-11-27 Ethicon Endo-Surgery, Inc. Endoscopic suturing tension controlling and indication devices
US8324759B2 (en) 2008-09-27 2012-12-04 Witricity Corporation Wireless energy transfer using magnetic materials to shape field and reduce loss
US8337394B2 (en) 2008-10-01 2012-12-25 Ethicon Endo-Surgery, Inc. Overtube with expandable tip
US8353487B2 (en) 2009-12-17 2013-01-15 Ethicon Endo-Surgery, Inc. User interface support devices for endoscopic surgical instruments
US8361066B2 (en) 2009-01-12 2013-01-29 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US8361112B2 (en) 2008-06-27 2013-01-29 Ethicon Endo-Surgery, Inc. Surgical suture arrangement
US8400017B2 (en) 2008-09-27 2013-03-19 Witricity Corporation Wireless energy transfer for computer peripheral applications
US8403926B2 (en) 2008-06-05 2013-03-26 Ethicon Endo-Surgery, Inc. Manually articulating devices
US8409200B2 (en) 2008-09-03 2013-04-02 Ethicon Endo-Surgery, Inc. Surgical grasping device
US8410636B2 (en) 2008-09-27 2013-04-02 Witricity Corporation Low AC resistance conductor designs
US8441154B2 (en) 2008-09-27 2013-05-14 Witricity Corporation Multi-resonator wireless energy transfer for exterior lighting
US8461720B2 (en) 2008-09-27 2013-06-11 Witricity Corporation Wireless energy transfer using conducting surfaces to shape fields and reduce loss
US8461722B2 (en) 2008-09-27 2013-06-11 Witricity Corporation Wireless energy transfer using conducting surfaces to shape field and improve K
US8466583B2 (en) 2008-09-27 2013-06-18 Witricity Corporation Tunable wireless energy transfer for outdoor lighting applications
US8471410B2 (en) 2008-09-27 2013-06-25 Witricity Corporation Wireless energy transfer over distance using field shaping to improve the coupling factor
US8476788B2 (en) 2008-09-27 2013-07-02 Witricity Corporation Wireless energy transfer with high-Q resonators using field shaping to improve K
US8480689B2 (en) 2008-09-02 2013-07-09 Ethicon Endo-Surgery, Inc. Suturing device
US8480657B2 (en) 2007-10-31 2013-07-09 Ethicon Endo-Surgery, Inc. Detachable distal overtube section and methods for forming a sealable opening in the wall of an organ
US8482158B2 (en) 2008-09-27 2013-07-09 Witricity Corporation Wireless energy transfer using variable size resonators and system monitoring
US8487480B1 (en) 2008-09-27 2013-07-16 Witricity Corporation Wireless energy transfer resonator kit
WO2013104039A1 (en) * 2012-01-13 2013-07-18 Evoluções Energia Ltda Equipment for condensing electric current and equipment for transmitting electric current through air
US8497601B2 (en) 2008-09-27 2013-07-30 Witricity Corporation Wireless energy transfer converters
US8496574B2 (en) 2009-12-17 2013-07-30 Ethicon Endo-Surgery, Inc. Selectively positionable camera for surgical guide tube assembly
US8506564B2 (en) 2009-12-18 2013-08-13 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US8529563B2 (en) 2008-08-25 2013-09-10 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US8552592B2 (en) 2008-09-27 2013-10-08 Witricity Corporation Wireless energy transfer with feedback control for lighting applications
US8569914B2 (en) 2008-09-27 2013-10-29 Witricity Corporation Wireless energy transfer using object positioning for improved k
US8568410B2 (en) 2007-08-31 2013-10-29 Ethicon Endo-Surgery, Inc. Electrical ablation surgical instruments
US8579897B2 (en) 2007-11-21 2013-11-12 Ethicon Endo-Surgery, Inc. Bipolar forceps
US8587153B2 (en) 2008-09-27 2013-11-19 Witricity Corporation Wireless energy transfer using high Q resonators for lighting applications
US8587155B2 (en) 2008-09-27 2013-11-19 Witricity Corporation Wireless energy transfer using repeater resonators
US8608652B2 (en) 2009-11-05 2013-12-17 Ethicon Endo-Surgery, Inc. Vaginal entry surgical devices, kit, system, and method
US8610311B1 (en) 2009-01-27 2013-12-17 Energy Magnification Corporation Passive power generation system
US8629578B2 (en) 2008-09-27 2014-01-14 Witricity Corporation Wireless energy transfer systems
US8643326B2 (en) 2008-09-27 2014-02-04 Witricity Corporation Tunable wireless energy transfer systems
US8667452B2 (en) 2011-11-04 2014-03-04 Witricity Corporation Wireless energy transfer modeling tool
US8669676B2 (en) 2008-09-27 2014-03-11 Witricity Corporation Wireless energy transfer across variable distances using field shaping with magnetic materials to improve the coupling factor
US8679003B2 (en) 2008-05-30 2014-03-25 Ethicon Endo-Surgery, Inc. Surgical device and endoscope including same
US8686598B2 (en) 2008-09-27 2014-04-01 Witricity Corporation Wireless energy transfer for supplying power and heat to a device
US8692410B2 (en) 2008-09-27 2014-04-08 Witricity Corporation Wireless energy transfer with frequency hopping
US8692412B2 (en) 2008-09-27 2014-04-08 Witricity Corporation Temperature compensation in a wireless transfer system
US8723366B2 (en) 2008-09-27 2014-05-13 Witricity Corporation Wireless energy transfer resonator enclosures
US8729737B2 (en) 2008-09-27 2014-05-20 Witricity Corporation Wireless energy transfer using repeater resonators
US8771260B2 (en) 2008-05-30 2014-07-08 Ethicon Endo-Surgery, Inc. Actuating and articulating surgical device
US8772973B2 (en) 2008-09-27 2014-07-08 Witricity Corporation Integrated resonator-shield structures
US8828031B2 (en) 2009-01-12 2014-09-09 Ethicon Endo-Surgery, Inc. Apparatus for forming an anastomosis
US8847548B2 (en) 2008-09-27 2014-09-30 Witricity Corporation Wireless energy transfer for implantable devices
US8888792B2 (en) 2008-07-14 2014-11-18 Ethicon Endo-Surgery, Inc. Tissue apposition clip application devices and methods
US8901778B2 (en) 2008-09-27 2014-12-02 Witricity Corporation Wireless energy transfer with variable size resonators for implanted medical devices
US8901779B2 (en) 2008-09-27 2014-12-02 Witricity Corporation Wireless energy transfer with resonator arrays for medical applications
US8907531B2 (en) 2008-09-27 2014-12-09 Witricity Corporation Wireless energy transfer with variable size resonators for medical applications
US8906035B2 (en) 2008-06-04 2014-12-09 Ethicon Endo-Surgery, Inc. Endoscopic drop off bag
US8912687B2 (en) 2008-09-27 2014-12-16 Witricity Corporation Secure wireless energy transfer for vehicle applications
US8922066B2 (en) 2008-09-27 2014-12-30 Witricity Corporation Wireless energy transfer with multi resonator arrays for vehicle applications
US8928276B2 (en) 2008-09-27 2015-01-06 Witricity Corporation Integrated repeaters for cell phone applications
US8933589B2 (en) 2012-02-07 2015-01-13 The Gillette Company Wireless power transfer using separately tunable resonators
US8937408B2 (en) 2008-09-27 2015-01-20 Witricity Corporation Wireless energy transfer for medical applications
US8939897B2 (en) 2007-10-31 2015-01-27 Ethicon Endo-Surgery, Inc. Methods for closing a gastrotomy
US8947186B2 (en) 2008-09-27 2015-02-03 Witricity Corporation Wireless energy transfer resonator thermal management
US8946938B2 (en) 2008-09-27 2015-02-03 Witricity Corporation Safety systems for wireless energy transfer in vehicle applications
US8957549B2 (en) 2008-09-27 2015-02-17 Witricity Corporation Tunable wireless energy transfer for in-vehicle applications
US8963488B2 (en) 2008-09-27 2015-02-24 Witricity Corporation Position insensitive wireless charging
US8986199B2 (en) 2012-02-17 2015-03-24 Ethicon Endo-Surgery, Inc. Apparatus and methods for cleaning the lens of an endoscope
US9005198B2 (en) 2010-01-29 2015-04-14 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US20150102676A1 (en) * 2013-10-11 2015-04-16 Earth Energies, Inc. Method and Apparatus for Extracting and Conveying Electrical Energy From the Earth's Ionosphere Cavity
US9028483B2 (en) 2009-12-18 2015-05-12 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
WO2015066818A1 (en) 2013-11-08 2015-05-14 The Governors Of The University Of Alberta Electrical energy transfer
US9035499B2 (en) 2008-09-27 2015-05-19 Witricity Corporation Wireless energy transfer for photovoltaic panels
US9049987B2 (en) 2011-03-17 2015-06-09 Ethicon Endo-Surgery, Inc. Hand held surgical device for manipulating an internal magnet assembly within a patient
US9054542B2 (en) 2010-06-10 2015-06-09 Access Business Group International Llc Coil configurations for inductive power transfer
US9065423B2 (en) 2008-09-27 2015-06-23 Witricity Corporation Wireless energy distribution system
US20150188364A1 (en) * 2013-12-27 2015-07-02 Fujitsu Component Limited Wireless power receiving apparatus and wireless power transmitting apparatus
US9078662B2 (en) 2012-07-03 2015-07-14 Ethicon Endo-Surgery, Inc. Endoscopic cap electrode and method for using the same
US9093853B2 (en) 2008-09-27 2015-07-28 Witricity Corporation Flexible resonator attachment
US9105959B2 (en) 2008-09-27 2015-08-11 Witricity Corporation Resonator enclosure
US9106203B2 (en) 2008-09-27 2015-08-11 Witricity Corporation Secure wireless energy transfer in medical applications
US9143009B2 (en) 2007-02-01 2015-09-22 The Chamberlain Group, Inc. Method and apparatus to facilitate providing power to remote peripheral devices for use with a movable barrier operator system
US9160203B2 (en) 2008-09-27 2015-10-13 Witricity Corporation Wireless powered television
US9184595B2 (en) 2008-09-27 2015-11-10 Witricity Corporation Wireless energy transfer in lossy environments
US9226772B2 (en) 2009-01-30 2016-01-05 Ethicon Endo-Surgery, Inc. Surgical device
US9233241B2 (en) 2011-02-28 2016-01-12 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9246336B2 (en) 2008-09-27 2016-01-26 Witricity Corporation Resonator optimizations for wireless energy transfer
US9254169B2 (en) 2011-02-28 2016-02-09 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9277957B2 (en) 2012-08-15 2016-03-08 Ethicon Endo-Surgery, Inc. Electrosurgical devices and methods
US9287607B2 (en) 2012-07-31 2016-03-15 Witricity Corporation Resonator fine tuning
US9306635B2 (en) 2012-01-26 2016-04-05 Witricity Corporation Wireless energy transfer with reduced fields
US9314620B2 (en) 2011-02-28 2016-04-19 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9318257B2 (en) 2011-10-18 2016-04-19 Witricity Corporation Wireless energy transfer for packaging
US9318922B2 (en) 2008-09-27 2016-04-19 Witricity Corporation Mechanically removable wireless power vehicle seat assembly
US9384885B2 (en) 2011-08-04 2016-07-05 Witricity Corporation Tunable wireless power architectures
US9396867B2 (en) 2008-09-27 2016-07-19 Witricity Corporation Integrated resonator-shield structures
US9404954B2 (en) 2012-10-19 2016-08-02 Witricity Corporation Foreign object detection in wireless energy transfer systems
US9421388B2 (en) 2007-06-01 2016-08-23 Witricity Corporation Power generation for implantable devices
US9427255B2 (en) 2012-05-14 2016-08-30 Ethicon Endo-Surgery, Inc. Apparatus for introducing a steerable camera assembly into a patient
US9442172B2 (en) 2011-09-09 2016-09-13 Witricity Corporation Foreign object detection in wireless energy transfer systems
US9449757B2 (en) 2012-11-16 2016-09-20 Witricity Corporation Systems and methods for wireless power system with improved performance and/or ease of use
US9496921B1 (en) 2015-09-09 2016-11-15 Cpg Technologies Hybrid guided surface wave communication
US9515494B2 (en) 2008-09-27 2016-12-06 Witricity Corporation Wireless power system including impedance matching network
US9544683B2 (en) 2008-09-27 2017-01-10 Witricity Corporation Wirelessly powered audio devices
US9545290B2 (en) 2012-07-30 2017-01-17 Ethicon Endo-Surgery, Inc. Needle probe guide
US9572623B2 (en) 2012-08-02 2017-02-21 Ethicon Endo-Surgery, Inc. Reusable electrode and disposable sheath
US9595378B2 (en) 2012-09-19 2017-03-14 Witricity Corporation Resonator enclosure
US9602168B2 (en) 2010-08-31 2017-03-21 Witricity Corporation Communication in wireless energy transfer systems
US9601266B2 (en) 2008-09-27 2017-03-21 Witricity Corporation Multiple connected resonators with a single electronic circuit
US9601270B2 (en) 2008-09-27 2017-03-21 Witricity Corporation Low AC resistance conductor designs
US9744858B2 (en) 2008-09-27 2017-08-29 Witricity Corporation System for wireless energy distribution in a vehicle
US9780573B2 (en) 2014-02-03 2017-10-03 Witricity Corporation Wirelessly charged battery system
US9780576B1 (en) 2015-11-05 2017-10-03 Marion Harlan Cates, Jr. Resonant inductive coupling extension cord for light emitting diodes
US9837860B2 (en) 2014-05-05 2017-12-05 Witricity Corporation Wireless power transmission systems for elevators
US9843217B2 (en) 2015-01-05 2017-12-12 Witricity Corporation Wireless energy transfer for wearables
US9842688B2 (en) 2014-07-08 2017-12-12 Witricity Corporation Resonator balancing in wireless power transfer systems
US9842687B2 (en) 2014-04-17 2017-12-12 Witricity Corporation Wireless power transfer systems with shaped magnetic components
US9859707B2 (en) 2014-09-11 2018-01-02 Cpg Technologies, Llc Simultaneous multifrequency receive circuits
US9857402B2 (en) 2015-09-08 2018-01-02 CPG Technologies, L.L.C. Measuring and reporting power received from guided surface waves
US9857821B2 (en) 2013-08-14 2018-01-02 Witricity Corporation Wireless power transfer frequency adjustment
US9882397B2 (en) 2014-09-11 2018-01-30 Cpg Technologies, Llc Guided surface wave transmission of multiple frequencies in a lossy media
US9882436B2 (en) 2015-09-09 2018-01-30 Cpg Technologies, Llc Return coupled wireless power transmission
US9885742B2 (en) 2015-09-09 2018-02-06 Cpg Technologies, Llc Detecting unauthorized consumption of electrical energy
US9887556B2 (en) 2014-09-11 2018-02-06 Cpg Technologies, Llc Chemically enhanced isolated capacitance
US9887558B2 (en) 2015-09-09 2018-02-06 Cpg Technologies, Llc Wired and wireless power distribution coexistence
US9887557B2 (en) 2014-09-11 2018-02-06 Cpg Technologies, Llc Hierarchical power distribution
US9887587B2 (en) 2014-09-11 2018-02-06 Cpg Technologies, Llc Variable frequency receivers for guided surface wave transmissions
US9887585B2 (en) 2015-09-08 2018-02-06 Cpg Technologies, Llc Changing guided surface wave transmissions to follow load conditions
US9893403B2 (en) 2015-09-11 2018-02-13 Cpg Technologies, Llc Enhanced guided surface waveguide probe
US9893402B2 (en) 2014-09-11 2018-02-13 Cpg Technologies, Llc Superposition of guided surface waves on lossy media
US9892849B2 (en) 2014-04-17 2018-02-13 Witricity Corporation Wireless power transfer systems with shield openings
US9899718B2 (en) 2015-09-11 2018-02-20 Cpg Technologies, Llc Global electrical power multiplication
US9912031B2 (en) 2013-03-07 2018-03-06 Cpg Technologies, Llc Excitation and use of guided surface wave modes on lossy media
US9910144B2 (en) 2013-03-07 2018-03-06 Cpg Technologies, Llc Excitation and use of guided surface wave modes on lossy media
US9916485B1 (en) 2015-09-09 2018-03-13 Cpg Technologies, Llc Method of managing objects using an electromagnetic guided surface waves over a terrestrial medium
US9923385B2 (en) 2015-06-02 2018-03-20 Cpg Technologies, Llc Excitation and use of guided surface waves
US9921256B2 (en) 2015-09-08 2018-03-20 Cpg Technologies, Llc Field strength monitoring for optimal performance
US9927477B1 (en) 2015-09-09 2018-03-27 Cpg Technologies, Llc Object identification system and method
US9929721B2 (en) 2015-10-14 2018-03-27 Witricity Corporation Phase and amplitude detection in wireless energy transfer systems
US9941566B2 (en) 2014-09-10 2018-04-10 Cpg Technologies, Llc Excitation and use of guided surface wave modes on lossy media
US9948145B2 (en) 2011-07-08 2018-04-17 Witricity Corporation Wireless power transfer for a seat-vest-helmet system
US9952266B2 (en) 2014-02-14 2018-04-24 Witricity Corporation Object detection for wireless energy transfer systems
US9954375B2 (en) 2014-06-20 2018-04-24 Witricity Corporation Wireless power transfer systems for surfaces
US9960470B2 (en) 2014-09-11 2018-05-01 Cpg Technologies, Llc Site preparation for guided surface wave transmission in a lossy media
US9973037B1 (en) 2015-09-09 2018-05-15 Cpg Technologies, Llc Object identification system and method
US9991048B2 (en) 2014-06-24 2018-06-05 The Board Of Trustees Of The University Of Alabama Wireless power transfer systems and methods
US9997040B2 (en) 2015-09-08 2018-06-12 Cpg Technologies, Llc Global emergency and disaster transmission
US10001553B2 (en) 2014-09-11 2018-06-19 Cpg Technologies, Llc Geolocation with guided surface waves
US10018744B2 (en) 2014-05-07 2018-07-10 Witricity Corporation Foreign object detection in wireless energy transfer systems
US10027177B2 (en) 2015-09-09 2018-07-17 Cpg Technologies, Llc Load shedding in a guided surface wave power delivery system
US10027131B2 (en) 2015-09-09 2018-07-17 CPG Technologies, Inc. Classification of transmission
US10027116B2 (en) 2014-09-11 2018-07-17 Cpg Technologies, Llc Adaptation of polyphase waveguide probes
US10031208B2 (en) 2015-09-09 2018-07-24 Cpg Technologies, Llc Object identification system and method
US10033198B2 (en) 2014-09-11 2018-07-24 Cpg Technologies, Llc Frequency division multiplexing for wireless power providers
US10033197B2 (en) 2015-09-09 2018-07-24 Cpg Technologies, Llc Object identification system and method
US10063104B2 (en) 2016-02-08 2018-08-28 Witricity Corporation PWM capacitor control
US10062944B2 (en) 2015-09-09 2018-08-28 CPG Technologies, Inc. Guided surface waveguide probes
US10063095B2 (en) 2015-09-09 2018-08-28 CPG Technologies, Inc. Deterring theft in wireless power systems
US10063110B2 (en) 2015-10-19 2018-08-28 Witricity Corporation Foreign object detection in wireless energy transfer systems
US10074993B2 (en) 2014-09-11 2018-09-11 Cpg Technologies, Llc Simultaneous transmission and reception of guided surface waves
US10075019B2 (en) 2015-11-20 2018-09-11 Witricity Corporation Voltage source isolation in wireless power transfer systems
US10079573B2 (en) 2014-09-11 2018-09-18 Cpg Technologies, Llc Embedding data on a power signal
US10084223B2 (en) 2014-09-11 2018-09-25 Cpg Technologies, Llc Modulated guided surface waves
US10097011B2 (en) 2015-04-30 2018-10-09 Witricity Corporation Wireless energy transfer for photovoltaic panels

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US787412A (en) * 1900-05-16 1905-04-18 Nikola Tesla Art of transmitting electrical energy through the natural mediums.
US1266175A (en) * 1916-05-06 1918-05-14 Nikola Tesla Lightning-protector.
US4685047A (en) * 1986-07-16 1987-08-04 Phillips Raymond P Sr Apparatus for converting radio frequency energy to direct current
US20040130425A1 (en) * 2002-08-12 2004-07-08 Tal Dayan Enhanced RF wireless adaptive power provisioning system for small devices
US9705606B2 (en) * 2005-09-27 2017-07-11 Wi-Charge, Ltd. Directional light transmitter and receiver
US7928900B2 (en) * 2006-12-15 2011-04-19 Alliant Techsystems Inc. Resolution antenna array using metamaterials
WO2009083990A3 (en) * 2008-01-03 2010-03-11 Wi-Charge Ltd. Wireless laser power transmitter
US7967074B2 (en) 2008-07-29 2011-06-28 Baker Hughes Incorporated Electric wireline insert safety valve
US8933594B2 (en) 2008-09-27 2015-01-13 Witricity Corporation Wireless energy transfer for vehicles
US20110080050A1 (en) * 2009-10-02 2011-04-07 Ut-Battelle, Llc Systems and Methods for Directional Reactive Power Ground Plane Transmission
DE102010012363A1 (en) * 2010-03-22 2011-09-22 Erweka Gmbh Disintegration time measuring device with coil and a module for wireless transmission
US9735584B2 (en) 2013-10-17 2017-08-15 Access Business Group International Llc Wireless power communication

Cited By (340)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5964478A (en) * 1997-03-07 1999-10-12 Automotive Systems Laboratory, Inc Electric field sensing air bag danger zone sensor
US6685296B2 (en) * 2000-06-16 2004-02-03 Canon Kabushiki Kaisha Ink tank and ink jet recording apparatus provided with the same
US20040036734A1 (en) * 2000-06-16 2004-02-26 Canon Kabushiki Kaisha Ink tank and ink jet recording apparatus provided with the same
US6997535B2 (en) 2000-06-16 2006-02-14 Canon Kabushiki Kaisha Ink tank and ink jet recording apparatus provided with the same
US20080319893A1 (en) * 2000-08-25 2008-12-25 Governing Dynamics, Llc Intelligent Routing Of Electric Power
US9256905B2 (en) 2000-08-25 2016-02-09 Paradigm Shifting Solutions Intelligent routing of electric power
US20060082334A1 (en) * 2001-07-19 2006-04-20 Correa Paulo N Energy conversion systems
US7053576B2 (en) 2001-07-19 2006-05-30 Correa Paulo N Energy conversion systems
US20060238148A1 (en) * 2001-07-19 2006-10-26 Correa Paulo N Energy conversion systems
US7235945B2 (en) 2001-07-19 2007-06-26 Correa Paulo N Energy conversion systems
FR2875649A1 (en) * 2004-09-21 2006-03-24 Henri Bondar Electric power transmission device for e.g. electric household appliance, has electric dipoles aligned on same axis, and generating and electromotive electrodes that are active and covered by solid insulating material
US20110227530A1 (en) * 2005-07-12 2011-09-22 Aristeidis Karalis Wireless power transmission for portable wireless power charging
US8400022B2 (en) 2005-07-12 2013-03-19 Massachusetts Institute Of Technology Wireless energy transfer with high-Q similar resonant frequency resonators
US8395282B2 (en) 2005-07-12 2013-03-12 Massachusetts Institute Of Technology Wireless non-radiative energy transfer
US8400023B2 (en) 2005-07-12 2013-03-19 Massachusetts Institute Of Technology Wireless energy transfer with high-Q capacitively loaded conducting loops
US8400020B2 (en) 2005-07-12 2013-03-19 Massachusetts Institute Of Technology Wireless energy transfer with high-Q devices at variable distances
US8400018B2 (en) 2005-07-12 2013-03-19 Massachusetts Institute Of Technology Wireless energy transfer with high-Q at high efficiency
US8400024B2 (en) 2005-07-12 2013-03-19 Massachusetts Institute Of Technology Wireless energy transfer across variable distances
US20090195333A1 (en) * 2005-07-12 2009-08-06 John D Joannopoulos Wireless non-radiative energy transfer
US20090195332A1 (en) * 2005-07-12 2009-08-06 John D Joannopoulos Wireless non-radiative energy transfer
US8400019B2 (en) 2005-07-12 2013-03-19 Massachusetts Institute Of Technology Wireless energy transfer with high-Q from more than one source
US20090224856A1 (en) * 2005-07-12 2009-09-10 Aristeidis Karalis Wireless energy transfer
US20090267709A1 (en) * 2005-07-12 2009-10-29 Joannopoulos John D Wireless non-radiative energy transfer
US20090267710A1 (en) * 2005-07-12 2009-10-29 Joannopoulos John D Wireless non-radiative energy transfer
US8760007B2 (en) 2005-07-12 2014-06-24 Massachusetts Institute Of Technology Wireless energy transfer with high-Q to more than one device
US9065286B2 (en) 2005-07-12 2015-06-23 Massachusetts Institute Of Technology Wireless non-radiative energy transfer
US20100253152A1 (en) * 2005-07-12 2010-10-07 Aristeidis Karalis Long range low frequency resonator
US8395283B2 (en) 2005-07-12 2013-03-12 Massachusetts Institute Of Technology Wireless energy transfer over a distance at high efficiency
US8760008B2 (en) 2005-07-12 2014-06-24 Massachusetts Institute Of Technology Wireless energy transfer over variable distances between resonators of substantially similar resonant frequencies
US20100102641A1 (en) * 2005-07-12 2010-04-29 Joannopoulos John D Wireless energy transfer across variable distances
US20100102640A1 (en) * 2005-07-12 2010-04-29 Joannopoulos John D Wireless energy transfer to a moving device between high-q resonators
US20100102639A1 (en) * 2005-07-12 2010-04-29 Joannopoulos John D Wireless non-radiative energy transfer
US20100117455A1 (en) * 2005-07-12 2010-05-13 Joannopoulos John D Wireless energy transfer using coupled resonators
US20100123353A1 (en) * 2005-07-12 2010-05-20 Joannopoulos John D Wireless energy transfer with high-q from more than one source
US20100123355A1 (en) * 2005-07-12 2010-05-20 Joannopoulos John D Wireless energy transfer with high-q sub-wavelength resonators
US20100123354A1 (en) * 2005-07-12 2010-05-20 Joannopoulos John D Wireless energy transfer with high-q devices at variable distances
US20100127575A1 (en) * 2005-07-12 2010-05-27 Joannopoulos John D Wireless energy transfer with high-q to more than one device
US20100133918A1 (en) * 2005-07-12 2010-06-03 Joannopoulos John D Wireless energy transfer over variable distances between resonators of substantially similar resonant frequencies
US20100133920A1 (en) * 2005-07-12 2010-06-03 Joannopoulos John D Wireless energy transfer across a distance to a moving device
US20100133919A1 (en) * 2005-07-12 2010-06-03 Joannopoulos John D Wireless energy transfer across variable distances with high-q capacitively-loaded conducting-wire loops
US8766485B2 (en) 2005-07-12 2014-07-01 Massachusetts Institute Of Technology Wireless energy transfer over distances to a moving device
US8076800B2 (en) 2005-07-12 2011-12-13 Massachusetts Institute Of Technology Wireless non-radiative energy transfer
US8400021B2 (en) 2005-07-12 2013-03-19 Massachusetts Institute Of Technology Wireless energy transfer with high-Q sub-wavelength resonators
US20100181844A1 (en) * 2005-07-12 2010-07-22 Aristeidis Karalis High efficiency and power transfer in wireless power magnetic resonators
US20100187911A1 (en) * 2005-07-12 2010-07-29 Joannopoulos John D Wireless energy transfer over distances to a moving device
US20100207458A1 (en) * 2005-07-12 2010-08-19 Joannopoulos John D Wireless energy transfer over a distance with devices at variable distances
US8772972B2 (en) 2005-07-12 2014-07-08 Massachusetts Institute Of Technology Wireless energy transfer across a distance to a moving device
US20100225175A1 (en) * 2005-07-12 2010-09-09 Aristeidis Karalis Wireless power bridge
US8097983B2 (en) 2005-07-12 2012-01-17 Massachusetts Institute Of Technology Wireless energy transfer
US20100237708A1 (en) * 2005-07-12 2010-09-23 Aristeidis Karalis Transmitters and receivers for wireless energy transfer
US20100237707A1 (en) * 2005-07-12 2010-09-23 Aristeidis Karalis Increasing the q factor of a resonator
US9444265B2 (en) 2005-07-12 2016-09-13 Massachusetts Institute Of Technology Wireless energy transfer
US8084889B2 (en) 2005-07-12 2011-12-27 Massachusetts Institute Of Technology Wireless non-radiative energy transfer
US8772971B2 (en) 2005-07-12 2014-07-08 Massachusetts Institute Of Technology Wireless energy transfer across variable distances with high-Q capacitively-loaded conducting-wire loops
US20100264745A1 (en) * 2005-07-12 2010-10-21 Aristeidis Karalis Resonators for wireless power applications
US20100277005A1 (en) * 2005-07-12 2010-11-04 Aristeidis Karalis Wireless powering and charging station
US20100327660A1 (en) * 2005-07-12 2010-12-30 Aristeidis Karalis Resonators and their coupling characteristics for wireless power transfer via magnetic coupling
US20100327661A1 (en) * 2005-07-12 2010-12-30 Aristeidis Karalis Packaging and details of a wireless power device
US20110012431A1 (en) * 2005-07-12 2011-01-20 Aristeidis Karalis Resonators for wireless power transfer
US20110018361A1 (en) * 2005-07-12 2011-01-27 Aristeidis Karalis Tuning and gain control in electro-magnetic power systems
US20110025131A1 (en) * 2005-07-12 2011-02-03 Aristeidis Karalis Packaging and details of a wireless power device
US9450421B2 (en) 2005-07-12 2016-09-20 Massachusetts Institute Of Technology Wireless non-radiative energy transfer
US20110043046A1 (en) * 2005-07-12 2011-02-24 Joannopoulos John D Wireless energy transfer with high-q capacitively loaded conducting loops
US20110049998A1 (en) * 2005-07-12 2011-03-03 Aristeidis Karalis Wireless delivery of power to a fixed-geometry power part
US8791599B2 (en) 2005-07-12 2014-07-29 Massachusetts Institute Of Technology Wireless energy transfer to a moving device between high-Q resonators
US20110074347A1 (en) * 2005-07-12 2011-03-31 Aristeidis Karalis Wireless energy transfer
US20110089895A1 (en) * 2005-07-12 2011-04-21 Aristeidis Karalis Wireless energy transfer
US9831722B2 (en) 2005-07-12 2017-11-28 Massachusetts Institute Of Technology Wireless non-radiative energy transfer
US9509147B2 (en) 2005-07-12 2016-11-29 Massachusetts Institute Of Technology Wireless energy transfer
US20110227528A1 (en) * 2005-07-12 2011-09-22 Aristeidis Karalis Adaptive matching, tuning, and power transfer of wireless power
US20110140544A1 (en) * 2005-07-12 2011-06-16 Aristeidis Karalis Adaptive wireless power transfer apparatus and method thereof
US20110148219A1 (en) * 2005-07-12 2011-06-23 Aristeidis Karalis Short range efficient wireless power transfer
US9450422B2 (en) 2005-07-12 2016-09-20 Massachusetts Institute Of Technology Wireless energy transfer
US20110162895A1 (en) * 2005-07-12 2011-07-07 Aristeidis Karalis Noncontact electric power receiving device, noncontact electric power transmitting device, noncontact electric power feeding system, and electrically powered vehicle
US20110181122A1 (en) * 2005-07-12 2011-07-28 Aristeidis Karalis Wirelessly powered speaker
US20110193419A1 (en) * 2005-07-12 2011-08-11 Aristeidis Karalis Wireless energy transfer
US20110198939A1 (en) * 2005-07-12 2011-08-18 Aristeidis Karalis Flat, asymmetric, and e-field confined wireless power transfer apparatus and method thereof
US8022576B2 (en) 2005-07-12 2011-09-20 Massachusetts Institute Of Technology Wireless non-radiative energy transfer
US20100096934A1 (en) * 2005-07-12 2010-04-22 Joannopoulos John D Wireless energy transfer with high-q similar resonant frequency resonators
US8587157B2 (en) 2006-03-21 2013-11-19 Murata Manufacturing Co., Ltd. Device for transporting energy by partial influence through a dielectric medium
US8242638B2 (en) 2006-03-21 2012-08-14 Murata Manufacturing Co., Ltd. Device for transporting energy by partial influence through a dielectric medium
WO2007107642A1 (en) * 2006-03-21 2007-09-27 Tmms Co., Ltd. Device for transporting energy by partial influence through a dielectric medium
US8729738B2 (en) 2006-03-21 2014-05-20 Murata Manufacturing Co., Ltd. Device for transporting energy by partial influence through a dielectric medium
US8587156B2 (en) 2006-03-21 2013-11-19 Murata Manufacturing Co., Ltd. Device for transporting energy by partial influence through a dielectric medium
US20090206675A1 (en) * 2006-03-21 2009-08-20 'tmms Co., Ltd. Device for transporting energy by partial influence through a dielectric medium
WO2008039832A2 (en) * 2006-09-27 2008-04-03 University Of Cincinnati Light emissive signage devices based on lightwave coupling
WO2008039832A3 (en) * 2006-09-27 2009-02-12 Univ Cincinnati Light emissive signage devices based on lightwave coupling
US9143009B2 (en) 2007-02-01 2015-09-22 The Chamberlain Group, Inc. Method and apparatus to facilitate providing power to remote peripheral devices for use with a movable barrier operator system
US8425505B2 (en) 2007-02-15 2013-04-23 Ethicon Endo-Surgery, Inc. Electroporation ablation apparatus, system, and method
US8449538B2 (en) 2007-02-15 2013-05-28 Ethicon Endo-Surgery, Inc. Electroporation ablation apparatus, system, and method
US8029504B2 (en) 2007-02-15 2011-10-04 Ethicon Endo-Surgery, Inc. Electroporation ablation apparatus, system, and method
US9375268B2 (en) 2007-02-15 2016-06-28 Ethicon Endo-Surgery, Inc. Electroporation ablation apparatus, system, and method
US8075572B2 (en) 2007-04-26 2011-12-13 Ethicon Endo-Surgery, Inc. Surgical suturing apparatus
US8100922B2 (en) 2007-04-27 2012-01-24 Ethicon Endo-Surgery, Inc. Curved needle suturing tool
US20080284506A1 (en) * 2007-05-15 2008-11-20 Jeffrey Messer System and method for controlling an electromagnetic field generator
US7817401B2 (en) 2007-05-15 2010-10-19 Extremely Ingenious Engineering LLC Solid state tesla coil suit
US8098472B2 (en) 2007-05-15 2012-01-17 Extremely Ingenious Engineering, Llc System and method for controlling an electromagnetic field generator
US8805530B2 (en) 2007-06-01 2014-08-12 Witricity Corporation Power generation for implantable devices
US9943697B2 (en) 2007-06-01 2018-04-17 Witricity Corporation Power generation for implantable devices
US9421388B2 (en) 2007-06-01 2016-08-23 Witricity Corporation Power generation for implantable devices
US9318898B2 (en) 2007-06-01 2016-04-19 Witricity Corporation Wireless power harvesting and transmission with heterogeneous signals
US20080300660A1 (en) * 2007-06-01 2008-12-04 Michael Sasha John Power generation for implantable devices
US9101777B2 (en) 2007-06-01 2015-08-11 Witricity Corporation Wireless power harvesting and transmission with heterogeneous signals
US9095729B2 (en) 2007-06-01 2015-08-04 Witricity Corporation Wireless power harvesting and transmission with heterogeneous signals
US9843230B2 (en) 2007-06-01 2017-12-12 Witricity Corporation Wireless power harvesting and transmission with heterogeneous signals
US20090011940A1 (en) * 2007-06-20 2009-01-08 Anthony Francis Issa System and method for using a vacuum core high temperature superconducting resonator
US8568410B2 (en) 2007-08-31 2013-10-29 Ethicon Endo-Surgery, Inc. Electrical ablation surgical instruments
US8480657B2 (en) 2007-10-31 2013-07-09 Ethicon Endo-Surgery, Inc. Detachable distal overtube section and methods for forming a sealable opening in the wall of an organ
US8939897B2 (en) 2007-10-31 2015-01-27 Ethicon Endo-Surgery, Inc. Methods for closing a gastrotomy
US8579897B2 (en) 2007-11-21 2013-11-12 Ethicon Endo-Surgery, Inc. Bipolar forceps
US8262655B2 (en) 2007-11-21 2012-09-11 Ethicon Endo-Surgery, Inc. Bipolar forceps
US20090134711A1 (en) * 2007-11-27 2009-05-28 Anthony Francis Issa Methods and systems for wireless energy and data transmission
US7940534B2 (en) 2007-11-27 2011-05-10 Extremely Ingenious Engineering Resonant transformer systems and methods of use
US7960867B2 (en) 2007-11-27 2011-06-14 Extremely Ingenious Engineering Methods and systems for wireless energy and data transmission
US20090303760A1 (en) * 2007-11-27 2009-12-10 Anthony Francis Issa Resonant transformer systems and methods of use
US20090177219A1 (en) * 2008-01-03 2009-07-09 Conlon Sean P Flexible tissue-penetration instrument with blunt tip assembly and methods for penetrating tissue
US8262680B2 (en) 2008-03-10 2012-09-11 Ethicon Endo-Surgery, Inc. Anastomotic device
US8076801B2 (en) 2008-05-14 2011-12-13 Massachusetts Institute Of Technology Wireless energy transfer, including interference enhancement
US20090284083A1 (en) * 2008-05-14 2009-11-19 Aristeidis Karalis Wireless energy transfer, including interference enhancement
US8317806B2 (en) 2008-05-30 2012-11-27 Ethicon Endo-Surgery, Inc. Endoscopic suturing tension controlling and indication devices
US20090299406A1 (en) * 2008-05-30 2009-12-03 Ethicon Endo-Surgery, Inc. Multifunction surgical device
US8070759B2 (en) 2008-05-30 2011-12-06 Ethicon Endo-Surgery, Inc. Surgical fastening device
US8771260B2 (en) 2008-05-30 2014-07-08 Ethicon Endo-Surgery, Inc. Actuating and articulating surgical device
US8652150B2 (en) 2008-05-30 2014-02-18 Ethicon Endo-Surgery, Inc. Multifunction surgical device
US8679003B2 (en) 2008-05-30 2014-03-25 Ethicon Endo-Surgery, Inc. Surgical device and endoscope including same
US8114072B2 (en) 2008-05-30 2012-02-14 Ethicon Endo-Surgery, Inc. Electrical ablation device
US8906035B2 (en) 2008-06-04 2014-12-09 Ethicon Endo-Surgery, Inc. Endoscopic drop off bag
US8403926B2 (en) 2008-06-05 2013-03-26 Ethicon Endo-Surgery, Inc. Manually articulating devices
DE102008029441A1 (en) 2008-06-20 2009-12-24 Holger Tschersich Method for technical utilization of natural static electric charge of earth's surface and ionosphere for e.g. consumption purpose, involves exciting electric charge of earth's surface to oscillation
US8361112B2 (en) 2008-06-27 2013-01-29 Ethicon Endo-Surgery, Inc. Surgical suture arrangement
US8262563B2 (en) 2008-07-14 2012-09-11 Ethicon Endo-Surgery, Inc. Endoscopic translumenal articulatable steerable overtube
US8888792B2 (en) 2008-07-14 2014-11-18 Ethicon Endo-Surgery, Inc. Tissue apposition clip application devices and methods
US8211125B2 (en) 2008-08-15 2012-07-03 Ethicon Endo-Surgery, Inc. Sterile appliance delivery device for endoscopic procedures
US8529563B2 (en) 2008-08-25 2013-09-10 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US20110156494A1 (en) * 2008-08-25 2011-06-30 Governing Dynamics Llc Wireless Energy Transfer System
US8241204B2 (en) 2008-08-29 2012-08-14 Ethicon Endo-Surgery, Inc. Articulating end cap
US8480689B2 (en) 2008-09-02 2013-07-09 Ethicon Endo-Surgery, Inc. Suturing device
US8409200B2 (en) 2008-09-03 2013-04-02 Ethicon Endo-Surgery, Inc. Surgical grasping device
US8114119B2 (en) 2008-09-09 2012-02-14 Ethicon Endo-Surgery, Inc. Surgical grasping device
US8400017B2 (en) 2008-09-27 2013-03-19 Witricity Corporation Wireless energy transfer for computer peripheral applications
US9577436B2 (en) 2008-09-27 2017-02-21 Witricity Corporation Wireless energy transfer for implantable devices
US9584189B2 (en) 2008-09-27 2017-02-28 Witricity Corporation Wireless energy transfer using variable size resonators and system monitoring
US8552592B2 (en) 2008-09-27 2013-10-08 Witricity Corporation Wireless energy transfer with feedback control for lighting applications
US8569914B2 (en) 2008-09-27 2013-10-29 Witricity Corporation Wireless energy transfer using object positioning for improved k
US8497601B2 (en) 2008-09-27 2013-07-30 Witricity Corporation Wireless energy transfer converters
US9596005B2 (en) 2008-09-27 2017-03-14 Witricity Corporation Wireless energy transfer using variable size resonators and systems monitoring
US9698607B2 (en) 2008-09-27 2017-07-04 Witricity Corporation Secure wireless energy transfer
US8487480B1 (en) 2008-09-27 2013-07-16 Witricity Corporation Wireless energy transfer resonator kit
US8587153B2 (en) 2008-09-27 2013-11-19 Witricity Corporation Wireless energy transfer using high Q resonators for lighting applications
US8587155B2 (en) 2008-09-27 2013-11-19 Witricity Corporation Wireless energy transfer using repeater resonators
US8598743B2 (en) 2008-09-27 2013-12-03 Witricity Corporation Resonator arrays for wireless energy transfer
US9544683B2 (en) 2008-09-27 2017-01-10 Witricity Corporation Wirelessly powered audio devices
US9515495B2 (en) 2008-09-27 2016-12-06 Witricity Corporation Wireless energy transfer in lossy environments
US8482158B2 (en) 2008-09-27 2013-07-09 Witricity Corporation Wireless energy transfer using variable size resonators and system monitoring
US8629578B2 (en) 2008-09-27 2014-01-14 Witricity Corporation Wireless energy transfer systems
US8643326B2 (en) 2008-09-27 2014-02-04 Witricity Corporation Tunable wireless energy transfer systems
US8304935B2 (en) 2008-09-27 2012-11-06 Witricity Corporation Wireless energy transfer using field shaping to reduce loss
US9515494B2 (en) 2008-09-27 2016-12-06 Witricity Corporation Wireless power system including impedance matching network
US8669676B2 (en) 2008-09-27 2014-03-11 Witricity Corporation Wireless energy transfer across variable distances using field shaping with magnetic materials to improve the coupling factor
US9601261B2 (en) 2008-09-27 2017-03-21 Witricity Corporation Wireless energy transfer using repeater resonators
US8686598B2 (en) 2008-09-27 2014-04-01 Witricity Corporation Wireless energy transfer for supplying power and heat to a device
US8692410B2 (en) 2008-09-27 2014-04-08 Witricity Corporation Wireless energy transfer with frequency hopping
US8692412B2 (en) 2008-09-27 2014-04-08 Witricity Corporation Temperature compensation in a wireless transfer system
US8716903B2 (en) 2008-09-27 2014-05-06 Witricity Corporation Low AC resistance conductor designs
US8723366B2 (en) 2008-09-27 2014-05-13 Witricity Corporation Wireless energy transfer resonator enclosures
US8618696B2 (en) 2008-09-27 2013-12-31 Witricity Corporation Wireless energy transfer systems
US8729737B2 (en) 2008-09-27 2014-05-20 Witricity Corporation Wireless energy transfer using repeater resonators
US9742204B2 (en) 2008-09-27 2017-08-22 Witricity Corporation Wireless energy transfer in lossy environments
US9744858B2 (en) 2008-09-27 2017-08-29 Witricity Corporation System for wireless energy distribution in a vehicle
US9754718B2 (en) 2008-09-27 2017-09-05 Witricity Corporation Resonator arrays for wireless energy transfer
US8476788B2 (en) 2008-09-27 2013-07-02 Witricity Corporation Wireless energy transfer with high-Q resonators using field shaping to improve K
US8471410B2 (en) 2008-09-27 2013-06-25 Witricity Corporation Wireless energy transfer over distance using field shaping to improve the coupling factor
US8772973B2 (en) 2008-09-27 2014-07-08 Witricity Corporation Integrated resonator-shield structures
US9780605B2 (en) 2008-09-27 2017-10-03 Witricity Corporation Wireless power system with associated impedance matching network
US8466583B2 (en) 2008-09-27 2013-06-18 Witricity Corporation Tunable wireless energy transfer for outdoor lighting applications
US8461722B2 (en) 2008-09-27 2013-06-11 Witricity Corporation Wireless energy transfer using conducting surfaces to shape field and improve K
US8461721B2 (en) 2008-09-27 2013-06-11 Witricity Corporation Wireless energy transfer using object positioning for low loss
US9496719B2 (en) 2008-09-27 2016-11-15 Witricity Corporation Wireless energy transfer for implantable devices
US8847548B2 (en) 2008-09-27 2014-09-30 Witricity Corporation Wireless energy transfer for implantable devices
US8461719B2 (en) 2008-09-27 2013-06-11 Witricity Corporation Wireless energy transfer systems
US8441154B2 (en) 2008-09-27 2013-05-14 Witricity Corporation Multi-resonator wireless energy transfer for exterior lighting
US8901778B2 (en) 2008-09-27 2014-12-02 Witricity Corporation Wireless energy transfer with variable size resonators for implanted medical devices
US8901779B2 (en) 2008-09-27 2014-12-02 Witricity Corporation Wireless energy transfer with resonator arrays for medical applications
US8907531B2 (en) 2008-09-27 2014-12-09 Witricity Corporation Wireless energy transfer with variable size resonators for medical applications
US8324759B2 (en) 2008-09-27 2012-12-04 Witricity Corporation Wireless energy transfer using magnetic materials to shape field and reduce loss
US8912687B2 (en) 2008-09-27 2014-12-16 Witricity Corporation Secure wireless energy transfer for vehicle applications
US8922066B2 (en) 2008-09-27 2014-12-30 Witricity Corporation Wireless energy transfer with multi resonator arrays for vehicle applications
US8928276B2 (en) 2008-09-27 2015-01-06 Witricity Corporation Integrated repeaters for cell phone applications
US20110043048A1 (en) * 2008-09-27 2011-02-24 Aristeidis Karalis Wireless energy transfer using object positioning for low loss
US8937408B2 (en) 2008-09-27 2015-01-20 Witricity Corporation Wireless energy transfer for medical applications
US9160203B2 (en) 2008-09-27 2015-10-13 Witricity Corporation Wireless powered television
US8947186B2 (en) 2008-09-27 2015-02-03 Witricity Corporation Wireless energy transfer resonator thermal management
US8946938B2 (en) 2008-09-27 2015-02-03 Witricity Corporation Safety systems for wireless energy transfer in vehicle applications
US8957549B2 (en) 2008-09-27 2015-02-17 Witricity Corporation Tunable wireless energy transfer for in-vehicle applications
US8963488B2 (en) 2008-09-27 2015-02-24 Witricity Corporation Position insensitive wireless charging
US9444520B2 (en) 2008-09-27 2016-09-13 Witricity Corporation Wireless energy transfer converters
US9843228B2 (en) 2008-09-27 2017-12-12 Witricity Corporation Impedance matching in wireless power systems
US20100237709A1 (en) * 2008-09-27 2010-09-23 Hall Katherine L Resonator arrays for wireless energy transfer
US9396867B2 (en) 2008-09-27 2016-07-19 Witricity Corporation Integrated resonator-shield structures
US10084348B2 (en) 2008-09-27 2018-09-25 Witricity Corporation Wireless energy transfer for implantable devices
US9369182B2 (en) 2008-09-27 2016-06-14 Witricity Corporation Wireless energy transfer using variable size resonators and system monitoring
US9318922B2 (en) 2008-09-27 2016-04-19 Witricity Corporation Mechanically removable wireless power vehicle seat assembly
US9035499B2 (en) 2008-09-27 2015-05-19 Witricity Corporation Wireless energy transfer for photovoltaic panels
US20100141042A1 (en) * 2008-09-27 2010-06-10 Kesler Morris P Wireless energy transfer systems
US8410636B2 (en) 2008-09-27 2013-04-02 Witricity Corporation Low AC resistance conductor designs
US9065423B2 (en) 2008-09-27 2015-06-23 Witricity Corporation Wireless energy distribution system
US9662161B2 (en) 2008-09-27 2017-05-30 Witricity Corporation Wireless energy transfer for medical applications
US9246336B2 (en) 2008-09-27 2016-01-26 Witricity Corporation Resonator optimizations for wireless energy transfer
US9184595B2 (en) 2008-09-27 2015-11-10 Witricity Corporation Wireless energy transfer in lossy environments
US9093853B2 (en) 2008-09-27 2015-07-28 Witricity Corporation Flexible resonator attachment
US9601270B2 (en) 2008-09-27 2017-03-21 Witricity Corporation Low AC resistance conductor designs
US9601266B2 (en) 2008-09-27 2017-03-21 Witricity Corporation Multiple connected resonators with a single electronic circuit
US9105959B2 (en) 2008-09-27 2015-08-11 Witricity Corporation Resonator enclosure
US9106203B2 (en) 2008-09-27 2015-08-11 Witricity Corporation Secure wireless energy transfer in medical applications
US9806541B2 (en) 2008-09-27 2017-10-31 Witricity Corporation Flexible resonator attachment
US8461720B2 (en) 2008-09-27 2013-06-11 Witricity Corporation Wireless energy transfer using conducting surfaces to shape fields and reduce loss
US8836172B2 (en) 2008-10-01 2014-09-16 Massachusetts Institute Of Technology Efficient near-field wireless energy transfer using adiabatic system variations
US9831682B2 (en) 2008-10-01 2017-11-28 Massachusetts Institute Of Technology Efficient near-field wireless energy transfer using adiabatic system variations
US20100148589A1 (en) * 2008-10-01 2010-06-17 Hamam Rafif E Efficient near-field wireless energy transfer using adiabatic system variations
US8337394B2 (en) 2008-10-01 2012-12-25 Ethicon Endo-Surgery, Inc. Overtube with expandable tip
US8362651B2 (en) 2008-10-01 2013-01-29 Massachusetts Institute Of Technology Efficient near-field wireless energy transfer using adiabatic system variations
US9220526B2 (en) 2008-11-25 2015-12-29 Ethicon Endo-Surgery, Inc. Rotational coupling device for surgical instrument with flexible actuators
US8157834B2 (en) 2008-11-25 2012-04-17 Ethicon Endo-Surgery, Inc. Rotational coupling device for surgical instrument with flexible actuators
US20100152609A1 (en) * 2008-12-11 2010-06-17 Ethicon Endo-Surgery, Inc. Specimen retrieval device
US8172772B2 (en) 2008-12-11 2012-05-08 Ethicon Endo-Surgery, Inc. Specimen retrieval device
US9011431B2 (en) 2009-01-12 2015-04-21 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US10004558B2 (en) 2009-01-12 2018-06-26 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US8828031B2 (en) 2009-01-12 2014-09-09 Ethicon Endo-Surgery, Inc. Apparatus for forming an anastomosis
US8361066B2 (en) 2009-01-12 2013-01-29 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US8610311B1 (en) 2009-01-27 2013-12-17 Energy Magnification Corporation Passive power generation system
US8252057B2 (en) 2009-01-30 2012-08-28 Ethicon Endo-Surgery, Inc. Surgical access device
US9226772B2 (en) 2009-01-30 2016-01-05 Ethicon Endo-Surgery, Inc. Surgical device
US8037591B2 (en) 2009-02-02 2011-10-18 Ethicon Endo-Surgery, Inc. Surgical scissors
US8144066B2 (en) 2009-02-26 2012-03-27 Harris Corporation Wireless communications including an antenna for wireless power transmission and data communication and associated methods
US20100214177A1 (en) * 2009-02-26 2010-08-26 Harris Corporation, Corporation of the State of Delawre Wireless communications including an antenna for wireless power transmission and data communication and associated methods
US20100249700A1 (en) * 2009-03-27 2010-09-30 Ethicon Endo-Surgery, Inc. Surgical instruments for in vivo assembly
US20110074346A1 (en) * 2009-09-25 2011-03-31 Hall Katherine L Vehicle charger safety system and method
US20110093009A1 (en) * 2009-10-16 2011-04-21 Ethicon Endo-Surgery, Inc. Otomy closure device
US8608652B2 (en) 2009-11-05 2013-12-17 Ethicon Endo-Surgery, Inc. Vaginal entry surgical devices, kit, system, and method
US8353487B2 (en) 2009-12-17 2013-01-15 Ethicon Endo-Surgery, Inc. User interface support devices for endoscopic surgical instruments
US8496574B2 (en) 2009-12-17 2013-07-30 Ethicon Endo-Surgery, Inc. Selectively positionable camera for surgical guide tube assembly
US9028483B2 (en) 2009-12-18 2015-05-12 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US8506564B2 (en) 2009-12-18 2013-08-13 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US9005198B2 (en) 2010-01-29 2015-04-14 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US9054542B2 (en) 2010-06-10 2015-06-09 Access Business Group International Llc Coil configurations for inductive power transfer
US9602168B2 (en) 2010-08-31 2017-03-21 Witricity Corporation Communication in wireless energy transfer systems
US10092291B2 (en) 2011-01-25 2018-10-09 Ethicon Endo-Surgery, Inc. Surgical instrument with selectively rigidizable features
US9314620B2 (en) 2011-02-28 2016-04-19 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9254169B2 (en) 2011-02-28 2016-02-09 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9233241B2 (en) 2011-02-28 2016-01-12 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9049987B2 (en) 2011-03-17 2015-06-09 Ethicon Endo-Surgery, Inc. Hand held surgical device for manipulating an internal magnet assembly within a patient
US9883910B2 (en) 2011-03-17 2018-02-06 Eticon Endo-Surgery, Inc. Hand held surgical device for manipulating an internal magnet assembly within a patient
US9948145B2 (en) 2011-07-08 2018-04-17 Witricity Corporation Wireless power transfer for a seat-vest-helmet system
US9787141B2 (en) 2011-08-04 2017-10-10 Witricity Corporation Tunable wireless power architectures
US9384885B2 (en) 2011-08-04 2016-07-05 Witricity Corporation Tunable wireless power architectures
US10027184B2 (en) 2011-09-09 2018-07-17 Witricity Corporation Foreign object detection in wireless energy transfer systems
US9442172B2 (en) 2011-09-09 2016-09-13 Witricity Corporation Foreign object detection in wireless energy transfer systems
US9318257B2 (en) 2011-10-18 2016-04-19 Witricity Corporation Wireless energy transfer for packaging
US8667452B2 (en) 2011-11-04 2014-03-04 Witricity Corporation Wireless energy transfer modeling tool
US8875086B2 (en) 2011-11-04 2014-10-28 Witricity Corporation Wireless energy transfer modeling tool
WO2013104039A1 (en) * 2012-01-13 2013-07-18 Evoluções Energia Ltda Equipment for condensing electric current and equipment for transmitting electric current through air
US9306635B2 (en) 2012-01-26 2016-04-05 Witricity Corporation Wireless energy transfer with reduced fields
US8933589B2 (en) 2012-02-07 2015-01-13 The Gillette Company Wireless power transfer using separately tunable resonators
US9634495B2 (en) 2012-02-07 2017-04-25 Duracell U.S. Operations, Inc. Wireless power transfer using separately tunable resonators
US8986199B2 (en) 2012-02-17 2015-03-24 Ethicon Endo-Surgery, Inc. Apparatus and methods for cleaning the lens of an endoscope
US9427255B2 (en) 2012-05-14 2016-08-30 Ethicon Endo-Surgery, Inc. Apparatus for introducing a steerable camera assembly into a patient
US9078662B2 (en) 2012-07-03 2015-07-14 Ethicon Endo-Surgery, Inc. Endoscopic cap electrode and method for using the same
US9788888B2 (en) 2012-07-03 2017-10-17 Ethicon Endo-Surgery, Inc. Endoscopic cap electrode and method for using the same
US9545290B2 (en) 2012-07-30 2017-01-17 Ethicon Endo-Surgery, Inc. Needle probe guide
US9287607B2 (en) 2012-07-31 2016-03-15 Witricity Corporation Resonator fine tuning
US9572623B2 (en) 2012-08-02 2017-02-21 Ethicon Endo-Surgery, Inc. Reusable electrode and disposable sheath
US9277957B2 (en) 2012-08-15 2016-03-08 Ethicon Endo-Surgery, Inc. Electrosurgical devices and methods
US9788885B2 (en) 2012-08-15 2017-10-17 Ethicon Endo-Surgery, Inc. Electrosurgical system energy source
US9595378B2 (en) 2012-09-19 2017-03-14 Witricity Corporation Resonator enclosure
US9404954B2 (en) 2012-10-19 2016-08-02 Witricity Corporation Foreign object detection in wireless energy transfer systems
US9465064B2 (en) 2012-10-19 2016-10-11 Witricity Corporation Foreign object detection in wireless energy transfer systems
US9449757B2 (en) 2012-11-16 2016-09-20 Witricity Corporation Systems and methods for wireless power system with improved performance and/or ease of use
US9842684B2 (en) 2012-11-16 2017-12-12 Witricity Corporation Systems and methods for wireless power system with improved performance and/or ease of use
US9910144B2 (en) 2013-03-07 2018-03-06 Cpg Technologies, Llc Excitation and use of guided surface wave modes on lossy media
US9912031B2 (en) 2013-03-07 2018-03-06 Cpg Technologies, Llc Excitation and use of guided surface wave modes on lossy media
US9711991B2 (en) 2013-07-19 2017-07-18 Witricity Corporation Wireless energy transfer converters
US9857821B2 (en) 2013-08-14 2018-01-02 Witricity Corporation Wireless power transfer frequency adjustment
US20150102675A1 (en) * 2013-10-11 2015-04-16 Earth Energies, Inc. Power Receiver for Extracting Power from Electric Field Energy in the Earth
US20150102676A1 (en) * 2013-10-11 2015-04-16 Earth Energies, Inc. Method and Apparatus for Extracting and Conveying Electrical Energy From the Earth's Ionosphere Cavity
US9564268B2 (en) * 2013-10-11 2017-02-07 Earth Energies, Inc. Power receiver for extracting power from electric field energy in the earth
WO2015066818A1 (en) 2013-11-08 2015-05-14 The Governors Of The University Of Alberta Electrical energy transfer
US20150188364A1 (en) * 2013-12-27 2015-07-02 Fujitsu Component Limited Wireless power receiving apparatus and wireless power transmitting apparatus
US9780573B2 (en) 2014-02-03 2017-10-03 Witricity Corporation Wirelessly charged battery system
US9952266B2 (en) 2014-02-14 2018-04-24 Witricity Corporation Object detection for wireless energy transfer systems
US9892849B2 (en) 2014-04-17 2018-02-13 Witricity Corporation Wireless power transfer systems with shield openings
US9842687B2 (en) 2014-04-17 2017-12-12 Witricity Corporation Wireless power transfer systems with shaped magnetic components
US9837860B2 (en) 2014-05-05 2017-12-05 Witricity Corporation Wireless power transmission systems for elevators
US10018744B2 (en) 2014-05-07 2018-07-10 Witricity Corporation Foreign object detection in wireless energy transfer systems
US9954375B2 (en) 2014-06-20 2018-04-24 Witricity Corporation Wireless power transfer systems for surfaces
US9991048B2 (en) 2014-06-24 2018-06-05 The Board Of Trustees Of The University Of Alabama Wireless power transfer systems and methods
US9842688B2 (en) 2014-07-08 2017-12-12 Witricity Corporation Resonator balancing in wireless power transfer systems
US9941566B2 (en) 2014-09-10 2018-04-10 Cpg Technologies, Llc Excitation and use of guided surface wave modes on lossy media
US10079573B2 (en) 2014-09-11 2018-09-18 Cpg Technologies, Llc Embedding data on a power signal
US9893402B2 (en) 2014-09-11 2018-02-13 Cpg Technologies, Llc Superposition of guided surface waves on lossy media
US9882397B2 (en) 2014-09-11 2018-01-30 Cpg Technologies, Llc Guided surface wave transmission of multiple frequencies in a lossy media
US10033198B2 (en) 2014-09-11 2018-07-24 Cpg Technologies, Llc Frequency division multiplexing for wireless power providers
US10074993B2 (en) 2014-09-11 2018-09-11 Cpg Technologies, Llc Simultaneous transmission and reception of guided surface waves
US9859707B2 (en) 2014-09-11 2018-01-02 Cpg Technologies, Llc Simultaneous multifrequency receive circuits
US10084223B2 (en) 2014-09-11 2018-09-25 Cpg Technologies, Llc Modulated guided surface waves
US9887587B2 (en) 2014-09-11 2018-02-06 Cpg Technologies, Llc Variable frequency receivers for guided surface wave transmissions
US9960470B2 (en) 2014-09-11 2018-05-01 Cpg Technologies, Llc Site preparation for guided surface wave transmission in a lossy media
US9887557B2 (en) 2014-09-11 2018-02-06 Cpg Technologies, Llc Hierarchical power distribution
US9887556B2 (en) 2014-09-11 2018-02-06 Cpg Technologies, Llc Chemically enhanced isolated capacitance
US10027116B2 (en) 2014-09-11 2018-07-17 Cpg Technologies, Llc Adaptation of polyphase waveguide probes
US10001553B2 (en) 2014-09-11 2018-06-19 Cpg Technologies, Llc Geolocation with guided surface waves
US9843217B2 (en) 2015-01-05 2017-12-12 Witricity Corporation Wireless energy transfer for wearables
US10097011B2 (en) 2015-04-30 2018-10-09 Witricity Corporation Wireless energy transfer for photovoltaic panels
US9923385B2 (en) 2015-06-02 2018-03-20 Cpg Technologies, Llc Excitation and use of guided surface waves
US9857402B2 (en) 2015-09-08 2018-01-02 CPG Technologies, L.L.C. Measuring and reporting power received from guided surface waves
US9921256B2 (en) 2015-09-08 2018-03-20 Cpg Technologies, Llc Field strength monitoring for optimal performance
US9887585B2 (en) 2015-09-08 2018-02-06 Cpg Technologies, Llc Changing guided surface wave transmissions to follow load conditions
US9997040B2 (en) 2015-09-08 2018-06-12 Cpg Technologies, Llc Global emergency and disaster transmission
US10063095B2 (en) 2015-09-09 2018-08-28 CPG Technologies, Inc. Deterring theft in wireless power systems
US9916485B1 (en) 2015-09-09 2018-03-13 Cpg Technologies, Llc Method of managing objects using an electromagnetic guided surface waves over a terrestrial medium
US9496921B1 (en) 2015-09-09 2016-11-15 Cpg Technologies Hybrid guided surface wave communication
US10027177B2 (en) 2015-09-09 2018-07-17 Cpg Technologies, Llc Load shedding in a guided surface wave power delivery system
US10027131B2 (en) 2015-09-09 2018-07-17 CPG Technologies, Inc. Classification of transmission
US10062944B2 (en) 2015-09-09 2018-08-28 CPG Technologies, Inc. Guided surface waveguide probes
US9887558B2 (en) 2015-09-09 2018-02-06 Cpg Technologies, Llc Wired and wireless power distribution coexistence
US9885742B2 (en) 2015-09-09 2018-02-06 Cpg Technologies, Llc Detecting unauthorized consumption of electrical energy
US9973037B1 (en) 2015-09-09 2018-05-15 Cpg Technologies, Llc Object identification system and method
US10033197B2 (en) 2015-09-09 2018-07-24 Cpg Technologies, Llc Object identification system and method
US9927477B1 (en) 2015-09-09 2018-03-27 Cpg Technologies, Llc Object identification system and method
US9882606B2 (en) 2015-09-09 2018-01-30 Cpg Technologies, Llc Hybrid guided surface wave communication
US9882436B2 (en) 2015-09-09 2018-01-30 Cpg Technologies, Llc Return coupled wireless power transmission
US10031208B2 (en) 2015-09-09 2018-07-24 Cpg Technologies, Llc Object identification system and method
US9893403B2 (en) 2015-09-11 2018-02-13 Cpg Technologies, Llc Enhanced guided surface waveguide probe
US9899718B2 (en) 2015-09-11 2018-02-20 Cpg Technologies, Llc Global electrical power multiplication
US9929721B2 (en) 2015-10-14 2018-03-27 Witricity Corporation Phase and amplitude detection in wireless energy transfer systems
US10063110B2 (en) 2015-10-19 2018-08-28 Witricity Corporation Foreign object detection in wireless energy transfer systems
US10079495B1 (en) 2015-11-05 2018-09-18 John Taylor Resonant inductive coupling extension cord for light emitting diodes
US9780576B1 (en) 2015-11-05 2017-10-03 Marion Harlan Cates, Jr. Resonant inductive coupling extension cord for light emitting diodes
US10075019B2 (en) 2015-11-20 2018-09-11 Witricity Corporation Voltage source isolation in wireless power transfer systems
US10063104B2 (en) 2016-02-08 2018-08-28 Witricity Corporation PWM capacitor control
US10097044B2 (en) 2016-06-20 2018-10-09 Massachusetts Institute Of Technology Wireless energy transfer

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