CN1430129A - Wireless pen for digital - Google Patents
Wireless pen for digital Download PDFInfo
- Publication number
- CN1430129A CN1430129A CN01145283A CN01145283A CN1430129A CN 1430129 A CN1430129 A CN 1430129A CN 01145283 A CN01145283 A CN 01145283A CN 01145283 A CN01145283 A CN 01145283A CN 1430129 A CN1430129 A CN 1430129A
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- China
- Prior art keywords
- magnetic element
- digital
- sliding part
- wireless pen
- ring
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- Legal status (The legal status 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 status listed.)
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Links
- 239000012256 powdered iron Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000005192 partition Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 230000005672 electromagnetic field Effects 0.000 description 12
- WABPQHHGFIMREM-AKLPVKDBSA-N lead-210 Chemical compound [210Pb] WABPQHHGFIMREM-AKLPVKDBSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Images
Abstract
A wireless pen for digital board is composed of a core, an elastic element, a first magnetic element wound by a winding, a second magnetic element, a slide part, a hollow sleeve barrel with ring partition, and an L-C resonant circuit. When an external is applied to its core, the relative position between both magnetic elements changes, resulting in the change of resonance frequency of said resonant circuit.
Description
Technical field
The relevant a kind of wireless pen for digital of the present invention, particularly relevant a kind of digiboard pressure-sensitive wireless pen.
Background technology
Widely used now computer inputs includes keyboard and mouse.Because digital development of science and technology, more and more Duo computer user brings into use digiboard as input media.The user can write or setting-out on the workspace of digiboard, and sends a signal to computer, is understood by computer.Particularly, the workspace on the digiboard provides a writing surface, with relevant informations such as the position that captures an object (object) (pen or mouse) and pressure, buttons.One class pen device (pen-like device) cooperates this kind digiboard and produces.Most existing class pen device is wired formula (corded) or wireless type (cordless), and wherein the shortcoming of some class pen device is to produce the lines that different live widths are arranged with the difference of the pressure of beginning to write.For overcoming this shortcoming, so the generation of pressure-sensitive wireless pen (pressure sensitive pen) is arranged.
Figure 1A is a kind of cross-sectional view of existing pressure-sensitive wireless pen 10.This pressure-sensitive wireless pen 10 comprises a shell body 12 cylindraceous, a pencil lead 14, a powdered-iron core 16, a coil 20, one removable magnetic part 18, a spring 22 and an electric capacity 24.Pencil lead 14 is placed on the long axis direction in the shell body 12, and an end 13 formation one taper that it contacts with digiboard is beneficial to point out easily a specified point position on digiboard.Powdered-iron core 16 has a central perforation and passes slidably for pencil lead 14.Coil 20 is to be wrapped on the powdered-iron core 16.Removable magnetic part 18 is the inside of being fixed in pencil lead 14, and it can be with respect to powdered-iron core 16 along with pencil lead 14 moves.Powdered-iron core 16 be fixed in the shell body 12 motionless.When the end 13 of pencil lead 14 is subjected to digiboard one upward pressure, the long axis direction that pencil lead 14 can prolong shell body 12 moves up, move up and drive removable magnetic part 18, change the relative position between powdered-iron core 16 and the removable magnetic part 18, thereby change the inductance value of coil 20.The coil 20 and the electric capacity 24 of this pressure-sensitive wireless pen 10 is to form a resonance circuit (resonancecircuit).When the induction that electromagnetic field is arranged between coil 20 and the electric capacity 24/transmission, this resonant circuit can produce resonance with coil 20.Therefore when the inductance value of coil 20 changed, the resonant frequency of resonant circuit was along with change, and the down force pressure value when writing by detecting the variation of resonant frequency, can detecting wireless pen changes.
Yet, when if this pressure-sensitive wireless pen 10 is write to become an obliquity with respect to digiboard, the upward pressure direction that pencil lead 14 is subjected to will be no longer consistent with the long axis direction of shell body 12, and then weaken pencil lead 14 stressed on direction of principal axis, the variable quantity that removable magnetic part 18 moves coil 20 inductance value that produced also reduces thereupon, and then digiboard is reduced the pressure-sensing susceptibility of wireless pen.
Under the normal condition, when the user uses the pressure-sensitive wireless pen to write on digiboard, be to make to form an angle of inclination between wireless pen and digiboard surface naturally.Therefore for improving the shortcoming of above-mentioned pressure-sensitive wireless pen 10, then the pressure-sensitive wireless pen that has another kind to have the removable magnetic part 18 of larger area produce, referring to Figure 1B.One end face of this removable magnetic part 18 is with respect to fixing powdered-iron core 16.Be not subjected under any external force in the end 13 of pencil lead 14, the preset space length between removable magnetic part 18 and the powdered-iron core 16 need have accurate control.But because powdered-iron core 16 is made by powder metallurgic method usually, its finished product length tolerance value can't be accurate, and make the preset space length between removable magnetic part 18 and the powdered-iron core 16 accurately to control.
Summary of the invention
Fundamental purpose of the present invention provides a kind of wireless pen for digital, this wireless pen is to be a kind of pressure-sensitive electromagnetic field wireless pen (pressure sensitive electromagnetic pen), it uses an outside to be wound with a stationary magnetic element (fixing magnetic body) and a removable magnetic element (movable magnetic body) of coil, change the relative position of stationary magnetic element and removable magnetic element because of pressurized by the wireless pen pencil lead, cause the coil inductance value to change, and then make the electromagnetic field frequency of wireless pen emission follow variation.
Another object of the present invention provides a kind of wireless pen for digital, it is to utilize the ring-type spacing body in the hollow sleeve that stationary magnetic element and removable magnetic element are separated, be not subjected under the external force at pencil lead, fixedly relative position is precisely controlled to make one between the coil that is wound in stationary magnetic element and the removable magnetic element, and can not cause the variation of wireless pen electromagnetic field frequency initial value because of the dimensional tolerence of magnetic element.
Another purpose of the present invention provides a kind of wireless pen for digital, it is that the coil of one line at least directly is wound on the stationary magnetic element, and obtain splendid Q value, make the ability of coil-induced electromagnetic field and emission electromagnetic field all quite strong, and then make wireless pen make wireless pen need not additionally use battery power supply directly by the digiboard inductive electromagnetic field energy of its below.
A further object of the present invention provides a kind of wireless pen for digital, it is that the coil of one line at least directly is wound on the stationary magnetic element, and obtain splendid Q value, make wireless pen have great electromagnetic field emissions ability, and make digiboard when the pressure that detects wireless pen changes, its signal/noise is higher than (S/N Ratio), and sharpness is higher, and then makes when digiboard becomes pressure with conversion of signals more true.
According to above-described purpose, the invention provides a kind of wireless pen for digital, this wireless pen for digital comprises a nib, and this nib comprises a coil of a support frame, a flexible member, a hollow sleeve, one first magnetic element, one second magnetic element, a sliding part, a pencil lead and at least one strand institute coiled; One end of support frame is provided with a skeleton lid, and this skeleton lid limits between an appearance; Flexible member is in being placed between this appearance; Hollow sleeve one end is to be resisted against on the skeleton lid, and it has an outside surface and an inside surface; Be provided with a ring-type spacing body in the inside surface of hollow sleeve, hollow sleeve being separated into one first room and one second room, and second room is to be formed between ring-type spacing body and the skeleton lid.First magnetic element has one first central perforation, and the one end is that engaging is placed in first room and is resisted against on the ring-type spacing body; Second magnetic element has one second central perforation, and it is to be placed in movably in second room, and an end is resisted against on the ring-type spacing body.Sliding part is to be placed in movably in second room, it has a cylinder-shaped body and a circular element, this circular element is the precalculated position around the outside surface that is formed at this cylinder-shaped body, this sliding part is separated into a first end and a second end, the length of this first end is the length that is slightly less than this second magnetic element; Inner one the 3rd room that forms of the first end of sliding part, this first end is second central perforation that engaging ground passes second magnetic element, so that sliding part drive second magnetic element synchronously when mobile in second room; The second end of sliding part is an end that is resisted against flexible member; Pencil lead is first central perforation and the ring-type spacing body that passes first magnetic element, so that the engaging of one end is resisted against in the 3rd room; Coil is a precalculated position of being fixed on the outside surface of first magnetic element near against this end of ring-type spacing body; When an external force upwards acts on pencil lead, the sliding part and second magnetic element are to move up synchronously to leave the ring-type spacing body, impel the relative position of second magnetic element and first magnetic element to change, cause the inductance value of coil to change, thereby change the electromagnetic field frequency of wireless pen emission.When no external force upwards acted on pencil lead, flexible member provided an elastic force to give sliding part, so that the sliding part and second magnetic element are resisted against on the ring-type spacing body simultaneously.
For clearer understanding purpose of the present invention, characteristics and advantage, preferred embodiment of the present invention is elaborated below in conjunction with accompanying drawing.
Description of drawings
Figure 1A is the cross-sectional view of an existing pressure-sensitive wireless pen for digital;
Figure 1B is the cross-sectional view of another existing pressure-sensitive wireless pen for digital;
Fig. 2 A is the cross-sectional view of wireless pen for digital of the present invention;
Fig. 2 B is the diagrammatic cross-section of the wireless pen nib of Fig. 2 A, and the wireless pen among the figure is to be in non-working condition; And
Fig. 2 C is the part exploded view of the nib of Fig. 2 B; And
Fig. 2 D is the diagrammatic cross-section of the wireless pen nib of Fig. 2 A, and the wireless pen among the figure is to be in user mode.
Embodiment
One preferred embodiment of a kind of wireless pen for digital structure provided by the invention is referring to shown in Fig. 2 A.This wireless pen for digital 200 comprises a nib 201, a shell body 202 and a printed circuit board (PCB) 203.Referring to Fig. 2 B, nib 201 comprises a coil 211 of a support frame 204, a flexible member 205, a hollow sleeve 206, one first magnetic element 207, one second magnetic element 208, a sliding part 209, a pencil lead 210 and at least one strand institute coiled.
Referring to Fig. 2 A to Fig. 2 C, an end of support frame 204 is provided with a skeleton lid 212.This skeleton lid 212 limits between an appearance, for ccontaining flexible member 205.This flexible member 205 can be a spherical flexible member, for example is a rubber sphere.Hollow sleeve 206 is hollow cylindrical, have an outside surface 213 and an inside surface 214, the one end is to be resisted against on the skeleton lid 212, and the other end is provided with a pair of terrace 216, wherein a terrace 216 is to engage mutually with shell body 202, makes hollow sleeve 206 be subjected to the fixing of shell body 202.Be provided with a ring-type spacing body 215 in the inside surface 214 of hollow sleeve 206, hollow sleeve 206 being separated into one first room and one second room, and second room is to be formed between ring-type spacing body 215 and the skeleton lid 212.Ring-type spacing body 215 is can be integrally formed with hollow sleeve 206.First magnetic element 207 has one first central perforation, and the one end is that engaging is placed in first room and is resisted against on the ring-type spacing body 215.First magnetic element 207 is in nib 201 is fixed in setting.Second magnetic element 208 has one second central perforation, and it is to be placed in movably in second room, and an end is resisted against on the ring-type spacing body 215.First magnetic element 207 and second magnetic element 208 all can be formed by powdered-iron core, wherein the preferable length greater than second magnetic element 208 of the length of first magnetic element 207.
Sliding part 209 is to be placed in movably in second room.With reference to Fig. 2 C, sliding part 209 has a cylinder-shaped body and a circular element 217 around being formed at a precalculated position on this cylinder-shaped body outside surface, sliding part 209 is separated into a first end and a second end.This cylinder-shaped body is can be integrally formed with circular element 217.Preferably, the outside surface of circular element 217 is to fit mutually with the inside surface 214 of hollow sleeve 206, slides up and down in hollow sleeve 206 in order to sliding part 209.The first end length of sliding part 209 is slightly less than the length of second magnetic element 208, so that the first end of sliding part 209 engaging when passing second central perforation of second magnetic element 208, keep a minim gap between the ring-type spacing body 215 of the first end of sliding part 209 and hollow sleeve 206.This minim gap is reserved by the length tolerance of second magnetic element 208.That is to say that the spacing between the circular element 217 of sliding part 209 and the ring-type spacing body 215 of hollow sleeve 206 must be slightly larger than the length of second magnetic element 208, so that this spacing can the second interior magnetic element 208 of ccontaining length tolerance permissible range.With reference to Fig. 2 B, inner one the 3rd room that forms of the first end of sliding part 209 is for an end of ccontaining engaging pencil lead 210.Sliding part 209 drives second magnetic element 208 when mobile synchronously in second room.The second end of sliding part 209 is ends that are resisted against flexible member 205.
Printed circuit board (PCB) 203 is to be placed on the support frame 204, and it comprises an inductance and capacitance type resonant circuit, and this inductance and capacitance type resonant circuit is to be electrically connected with coil 211.
With reference to Fig. 2 D, it is the user mode sectional view of wireless pen for digital 201 of the present invention, and pencil lead 210 is write on digiboard 3 among the figure, and at this moment, digiboard 3 upwards applies a strength, makes pencil lead 210 and sliding part 209 move up pressuring elastic element 205 synchronously.At this moment, second magnetic element 208 is also driven synchronously by sliding part 209 and moves up, and its relative position with first magnetic element 207 is changed, and then makes the inductance value reduction of coil 211.Bigger when second magnetic element 208 to top offset, the inductance value of coil 211 is just fallen lowlyer, its with the resonant frequency of resonant circuit then more greatly.Second magnetic element 208 moves up, and changes the inductance value of coil 211, resonant frequency also with change, coil 211 is promptly wirelessly launched the electromagnetic field signal of frequency change, makes digiboard 3 receive and produce induced voltage.
When no external force upwards acted on pencil lead 210, flexible member 205 provided an elastic force to give sliding part 209, so that the sliding part 209 and second magnetic element 208 are resisted against on the ring-type spacing body 215 simultaneously.In addition, be not subjected to digiboard 3 upwards under the strength effect at pencil lead 210, distance between first magnetic element 207 and second magnetic element 208 is that the thickness by ring-type spacing body 215 is determined, can be maintained fixed, can not influence the accurate control of relative position between the two because of the finished product length tolerance value of first magnetic element 207 and second magnetic element 208.When pencil lead 210 one upwards under the external force effect, the frequency output valve of wireless pen for digital 200 can be fixed.
Wireless pen for digital 200 of the present invention is that the coil 211 of one line institute coiled at least directly is wrapped on the outside surface of first magnetic element 207.Coil 211 has splendid Q value, and the ability of its emission electromagnetic field and induction field is all very strong.Sharpness can be higher when digiboard 3 changed at the pressure that detects wireless pen, makes when digiboard becomes pressure with conversion of signals more true.In addition, can directly absorb the electromagnetic field of digiboard 5 emission, being made for its electric power, and not need additionally to use battery that electric power is provided by coil 211.
The above is a preferred embodiment of the present invention only, is not in order to limit claim of the present invention; All other do not break away from the equivalence of being finished under the disclosed spirit and changes or replacement, all should be included in the following claim that claims limited.
Claims (10)
1. a wireless pen for digital comprises a nib, it is characterized in that, this nib comprises:
One support frame, one end are provided with a skeleton lid, and this skeleton lid limits between an appearance;
One flexible member is in it is placed between this appearance;
One hollow sleeve, the one end is resisted against on this skeleton lid, this hollow sleeve has an outside surface and an inside surface, be provided with a ring-type spacing body in this inside surface, this hollow sleeve is separated into one first room and one second room, this second room system is formed between this ring-type spacing body and this skeleton lid;
One first magnetic element, it has one first central perforation, and the end engaging of this first magnetic element is placed in this first room, and is resisted against on this ring-type spacing body;
One second magnetic element, it has one second central perforation, and this second magnetic element is placed in this second room movably, and the one end is resisted against on this ring-type spacing body;
One sliding part, it is placed in this second room movably, it has a cylinder-shaped body and a circular element, this circular element is around a precalculated position of the outside surface that is formed at this cylinder-shaped body, this sliding part is separated into a first end and a second end, the length of this first end is slightly less than the length of this second magnetic element, inner one the 3rd room that forms of this first end, pass to this first end engaging this second central perforation of this second magnetic element, so that this sliding part can drive this second magnetic element when mobile synchronously in this second room, this second end is resisted against an end of this flexible member;
One pencil lead, it passes this first central perforation and this ring-type spacing body of this first magnetic element, so that the engaging of one end is resisted against in the 3rd room; And
One coil of at least one strand institute coiled, it is fixed on the outside surface of this first magnetic element near the precalculated position against this end of this ring-type spacing body;
Wherein, when an external force upwards acts on this pencil lead, this sliding part and this second magnetic element are to move up synchronously to leave this ring-type spacing body, and when no external force upwards acts on this pencil lead, this flexible member provides an elastic force to give this sliding part, so that this sliding part and this second magnetic element are resisted against on this ring-type spacing body simultaneously.
2. wireless pen for digital as claimed in claim 1 is characterized in that, described first magnetic element is one first powdered-iron core.
3. wireless pen for digital as claimed in claim 1 is characterized in that, described second magnetic element is one second powdered-iron core.
4. wireless pen for digital as claimed in claim 1 is characterized in that, an outside surface of this circular element of described sliding part is to fit mutually with this inside surface of this hollow sleeve.
5. wireless pen for digital as claimed in claim 1 is characterized in that, described hollow sleeve and its this ring-type spacing body are integrally formed.
6. wireless pen for digital as claimed in claim 1 is characterized in that, this cylinder-shaped body and this circular element of described sliding part are integrally formed.
7. wireless pen for digital as claimed in claim 1 is characterized in that, described flexible member is an elastic ball spare.
8. wireless pen for digital as claimed in claim 7 is characterized in that, described flexible member is a rubber sphere.
9. wireless pen for digital as claimed in claim 1 is characterized in that, described pencil lead is a steel ball pencil lead.
10. wireless pen for digital as claimed in claim 1 is characterized in that, also comprises:
One shell body is for holding this nib; And
One printed circuit board (PCB), it is arranged on this support frame, and it has an inductance and capacitance type resonant circuit, and this resonant circuit system is electrically connected with this coil;
Wherein when an external force upwards is administered to this pencil lead, this external force acts on this sliding part by this pencil lead, this sliding part and this second magnetic element are moved up synchronously oppress this flexible member distortion, and impel the relative position of this second magnetic element and this first magnetic element to change, cause the inductance value of this coil to change, thereby change the resonant frequency of this resonant circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011452838A CN1202460C (en) | 2001-12-30 | 2001-12-30 | Wireless pen for digital |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011452838A CN1202460C (en) | 2001-12-30 | 2001-12-30 | Wireless pen for digital |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1430129A true CN1430129A (en) | 2003-07-16 |
| CN1202460C CN1202460C (en) | 2005-05-18 |
Family
ID=4678112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011452838A Expired - Lifetime CN1202460C (en) | 2001-12-30 | 2001-12-30 | Wireless pen for digital |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1202460C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368181A (en) * | 2011-10-25 | 2012-03-07 | 广东威创视讯科技股份有限公司 | Writing and trigging device of electronic pen |
| CN102915128A (en) * | 2011-08-02 | 2013-02-06 | 群康科技(深圳)有限公司 | Stylus |
| CN101995968B (en) * | 2009-08-27 | 2013-04-10 | 太瀚科技股份有限公司 | Input pen with function of electromagnetic induction |
| CN103076904A (en) * | 2013-01-31 | 2013-05-01 | 贺爱兰 | Electromagnetic pen and electromagnetic writing device |
| CN101751157B (en) * | 2008-12-12 | 2013-06-26 | 汉王科技股份有限公司 | Portable stylus pen |
| CN103995608A (en) * | 2013-02-20 | 2014-08-20 | 联想(北京)有限公司 | Input device and input ink quantity value control method |
| CN104571636A (en) * | 2013-10-18 | 2015-04-29 | 太瀚科技股份有限公司 | Touch control pen |
| CN106201025A (en) * | 2016-06-28 | 2016-12-07 | 深圳市绘王动漫科技有限公司 | Electronic handwriting pen and electronic handwritten system |
| CN108549494A (en) * | 2013-11-08 | 2018-09-18 | 禾瑞亚科技股份有限公司 | Sender unit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962281A (en) * | 2006-11-20 | 2007-05-16 | 杭州惠道科技有限公司 | Wireless and source-free hand-writing pen common for all kinds of electronic apparatus |
-
2001
- 2001-12-30 CN CNB011452838A patent/CN1202460C/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751157B (en) * | 2008-12-12 | 2013-06-26 | 汉王科技股份有限公司 | Portable stylus pen |
| CN101995968B (en) * | 2009-08-27 | 2013-04-10 | 太瀚科技股份有限公司 | Input pen with function of electromagnetic induction |
| CN102915128A (en) * | 2011-08-02 | 2013-02-06 | 群康科技(深圳)有限公司 | Stylus |
| CN102915128B (en) * | 2011-08-02 | 2016-06-08 | 群康科技(深圳)有限公司 | Pointer |
| CN102368181A (en) * | 2011-10-25 | 2012-03-07 | 广东威创视讯科技股份有限公司 | Writing and trigging device of electronic pen |
| CN103076904A (en) * | 2013-01-31 | 2013-05-01 | 贺爱兰 | Electromagnetic pen and electromagnetic writing device |
| CN103076904B (en) * | 2013-01-31 | 2016-01-20 | 贺爱兰 | Time writer and electromagnetic handwriting device |
| CN103995608A (en) * | 2013-02-20 | 2014-08-20 | 联想(北京)有限公司 | Input device and input ink quantity value control method |
| CN104571636A (en) * | 2013-10-18 | 2015-04-29 | 太瀚科技股份有限公司 | Touch control pen |
| CN108549494A (en) * | 2013-11-08 | 2018-09-18 | 禾瑞亚科技股份有限公司 | Sender unit |
| CN106201025A (en) * | 2016-06-28 | 2016-12-07 | 深圳市绘王动漫科技有限公司 | Electronic handwriting pen and electronic handwritten system |
| CN106201025B (en) * | 2016-06-28 | 2019-08-27 | 深圳市绘王动漫科技有限公司 | Electronic handwriting pen and electronic handwritten system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1202460C (en) | 2005-05-18 |
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Owner name: TAIHAN TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: TIANHAN SCIENCE + TECHNOLOGY CO. LTD. Effective date: 20060630 |
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Effective date of registration: 20060630 Address after: Room 47, No. two, No. 104, Hsinchu Science Park, Taiwan, China 300 Patentee after: Taihan Science & Technology Address before: Hsinchu Science Industrial Park, Hsinchu Province, Taiwan County, Chuangxin Road, No. 5, No. 3, building 1 Patentee before: Tianhan Science & Technology Co., Ltd. |
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Owner name: WACOM CO., LTD. Free format text: FORMER OWNER: TAIHAN SCIENCE + TECHNOLOGY Effective date: 20150512 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150512 Address after: Saitama Prefecture, Japan Patentee after: Wacom Co., Ltd. Address before: Room 47, No. two, 104, Science Park, Hsinchu, Taiwan, China Patentee before: Taihan Science & Technology |
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Granted publication date: 20050518 |