BE521979A - - Google Patents

Info

Publication number: BE521979A
Authority: BE; Belgium

Application number

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1952-03-10

Publication of BE521979A publication Critical patent/BE521979A/xx

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
- H03G11/02—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general by means of diodes
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B7/00—Generation of oscillations using active element having a negative resistance between two of its electrodes
- H03B7/02—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance
- H03B7/06—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being semiconductor device
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B9/00—Generation of oscillations using transit-time effects
- H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
- H03B9/02—Generation of oscillations using transit-time effects using discharge tubes using a retarding-field tube
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
- H03F3/10—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only with diodes
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/313—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of semiconductor devices with two electrodes, one or two potential barriers, and exhibiting a negative resistance characteristic
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/45—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices
- H03K3/47—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices the devices being parametrons
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F2013/53445—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad from several sheets
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F2013/53765—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
- A61F2013/53782—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry with holes
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
- A61F2013/5395—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers with thermoplastic agent, i.e. softened by heat

Landscapes

Engineering & Computer Science (AREA)
Microelectronics & Electronic Packaging (AREA)
Physics & Mathematics (AREA)
Power Engineering (AREA)
Ceramic Engineering (AREA)
Electromagnetism (AREA)
Nonlinear Science (AREA)
Condensed Matter Physics & Semiconductors (AREA)
General Physics & Mathematics (AREA)
Computer Hardware Design (AREA)
Amplifiers (AREA)
Rectifiers (AREA)
Thyristors (AREA)

BE521979D 1952-03-10 BE521979A (fi)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR961176X		1952-03-10

Publications (1)

Publication Number	Publication Date
BE521979A true BE521979A (fi)

Family

ID=9496098

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
BE521979D BE521979A (fi)	1952-03-10
BE518294D BE518294A (fi)	1952-03-10

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
BE518294D BE518294A (fi)	1952-03-10

Country Status (6)

Country	Link
US (1)	US2843765A (fi)
BE (2)	BE518294A (fi)
DE (2)	DE961176C (fi)
FR (2)	FR1057036A (fi)
GB (1)	GB724296A (fi)
NL (3)	NL176650B (fi)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3125685A (en) *		1964-03-17		Nonlinear sensing circuit
US3124701A (en) *		1964-03-10		Richard l
US2879409A (en) *	1954-09-09	1959-03-24	Arthur W Holt	Diode amplifier
US3112453A (en) *	1954-09-09	1963-11-26	Arthur W Holt	Diode amplifier
US3070779A (en) *	1955-09-26	1962-12-25	Ibm	Apparatus utilizing minority carrier storage for signal storage, pulse reshaping, logic gating, pulse amplifying and pulse delaying
US2975377A (en) *	1956-08-07	1961-03-14	Ibm	Two-terminal semiconductor high frequency oscillator
US2939965A (en) *	1956-12-20	1960-06-07	Abraham George	Electrical switching circuit
US2941094A (en) *	1956-12-20	1960-06-14	Abraham George	Electrical amplifying circuit
US2939966A (en) *	1956-12-20	1960-06-07	Abraham George	Electrical switching circuit
US2909679A (en) *	1957-02-04	1959-10-20	Abraham George	Hall effect circuit employing a steady state of charge carriers
DE1072757B (de) *	1957-05-29	1960-01-07	Hazeltine Corporation, Washington, D. C. (V. St. A.)	Schaltung zur Erzeugung einer steilen Stromänderting durch einen Flächentransistor
US3040191A (en) *	1958-06-10	1962-06-19	Westinghouse Electric Corp	Switching systems
US3030523A (en) *	1958-07-24	1962-04-17	Westinghouse Electric Corp	Condition responsive impedance switching arrangement utilizing hyperconductive diode
US2946901A (en) *	1958-09-22	1960-07-26	Robert J Kyler	Switching circuit for differentiator
NL251536A (fi) *	1959-05-13
NL253490A (fi) *	1959-07-07	1900-01-01
US3058009A (en) *	1959-07-15	1962-10-09	Shockley William	Trigger circuit switching from stable operation in the negative resistance region to unstable operation
US3136975A (en) *	1959-07-20	1964-06-09	Shell Oil Co	Monitoring circuit for logging instruments
US3096445A (en) *	1959-11-13	1963-07-02	Rca Corp	Square wave generator compristing negative resistance diode and mismatched delay line producing steep edge pulses
US3175096A (en) *	1959-12-02	1965-03-23	Ibm	Tunnel diode controlled magnetic triggers
US3092734A (en) *	1959-12-18	1963-06-04	Rca Corp	Amplitude limiter for a. c. signals using a tunnel diode
US3176149A (en) *	1960-03-24	1965-03-30	Gen Electric	Solid state circuit interrupter
US3185860A (en) *	1960-04-20	1965-05-25	Rca Corp	Bistable device
US3087123A (en) *	1960-04-21	1963-04-23	Rca Corp	Negative resistance diode multivibrators
US3143660A (en) *	1960-08-29	1964-08-04	Rca Corp	Stabilized negative resistance diode circuit
US3153151A (en) *	1960-11-23	1964-10-13	Hughes Aircraft Co	Transistor circuits utilizing shunt-input tunnel diode to provide positive switchingand improve rise time
GB944211A (fi) *	1961-02-28
US3188490A (en) *	1962-04-03	1965-06-08	Hunt Electronics Company	Power control circuit utilizing a phase shift network for controlling the conduction time of thyratron type devices
US3262029A (en) *	1962-07-24	1966-07-19	Hughes Aircraft Co	Low noise microwave diode
US3333196A (en) *	1965-06-28	1967-07-25	Abraham George	Electrical switching means

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE487452C (de) *	1928-09-14	1929-12-10	Abraham Esau Dr	Verfahren zur Gleichrichtung hochfrequenter Stroeme
US2418516A (en) *	1944-06-06	1947-04-08	Selenium Corp	Amplifier
NL147713B (nl) *	1948-07-23		Laing & Son Ltd John	Werkwijze voor het bereiden van een plastische mortel.
US2627575A (en) *	1950-02-18	1953-02-03	Bell Telephone Labor Inc	Semiconductor translating device
US2666816A (en) *	1950-10-20	1954-01-19	Westinghouse Electric Corp	Semiconductor amplifier
US2647995A (en) *	1950-12-07	1953-08-04	Ibm	Trigger circuit
USRE24303E (en) *	1951-07-02	1957-04-16		Semi-conductor trigger circuit

0
- BE BE521979D patent/BE521979A/xx unknown
- DE DEI7573A patent/DE1003266B/de active Pending
- NL NLAANVRAGE7411075,A patent/NL180489B/xx unknown
- NL NL94444D patent/NL94444C/xx active
- BE BE518294D patent/BE518294A/xx unknown
- NL NLAANVRAGE7605551,A patent/NL176650B/xx unknown
1952
- 1952-03-10 FR FR1057036D patent/FR1057036A/fr not_active Expired
- 1952-08-08 FR FR63195D patent/FR63195E/fr not_active Expired
1953
- 1953-03-06 GB GB6274/53A patent/GB724296A/en not_active Expired
- 1953-03-08 DE DEI6988A patent/DE961176C/de not_active Expired
- 1953-03-09 US US341290A patent/US2843765A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
DE961176C (de)	1957-04-04
NL180489B (nl)
BE518294A (fi)
FR63195E (fr)	1955-08-25
GB724296A (en)	1955-02-16
FR1057036A (fr)	1954-03-04
NL94444C (fi)
US2843765A (en)	1958-07-15
DE1003266B (de)	1957-02-28
NL176650B (nl)

Publication	Publication Date	Title
IT509938A (fi)
FR65799E (fi)	1956-03-12
FR999392A (fi)	1952-01-31
FR999228A (fi)	1952-01-29
FR999213A (fi)	1952-01-29
FR56152E (fi)	1952-09-30
BE519586A (fi)
BE519427A (fi)
BE555893A (fi)
BE508483A (fi)
BE538725A (fi)	1955-06-30
BE524186A (fi)
BE522652A (fi)
BE521942A (fi)
BE521806A (fi)
BE521771A (fi)
BE520789A (fi)	1953-07-15
BE520381A (fi)
BE519529A (fi)
BE519328A (fi)
BE519222A (fi)
BE518436A (fi)
BE517842A (fi)
BE517225A (fi)
BE521251A (fi)