Inventor · disambiguated record
Chin-Fu Chang
Also filed as: CHANG CHIN · CHANG CHIN-FU
178 granted patents·22 pending applications·570 citations·filing 1989–2023
99Inventor score
Files withEGALAX_EMPIA TECH INC113CHANG CHIN-FU54EGALAX EMPIA TECHNOLOGY INC30EGALAX & MDASH EMPIA TECHNOLOG2LIN FENG1
Top patents by PatentIndex Score
200 records- 0198US8614688B2Capacitive touch screenCHANG CHIN-FU·Filed 2011·Granted Dec 24, 2013·37 cites·16 claims
- 0296US8830205B2Capacitive touch screen with square or rhombus conductive strips with extension padsCHANG CHIN-FU·Filed 2012·Granted Sep 9, 2014·20 cites·23 claims
- 0395US8400423B2Method and device for analyzing positionsCHANG CHIN-FU·Filed 2011·Granted Mar 19, 2013·16 cites·20 claims
- 0494US9851816B2Transmitter and controlling method thereofEGALAX_EMPIA TECH INC·Filed 2014·Granted Dec 26, 2017·15 cites·30 claims
- 0594US8497851B2Method and device for analyzing positionsEGALAX EMPIA TECHNOLOGY INC·Filed 2013·Granted Jul 30, 2013·7 cites·20 claims
- 0693US10303271B2Transmitter and transmitting method thereofEGALAX_EMPIA TECH INC·Filed 2015·Granted May 28, 2019·7 cites·20 claims
- 0793US9069411B2Capacitive touch screenEgalax—Empia Technology Inc·Filed 2014·Granted Jun 30, 2015·10 cites·21 claims
- 0893US8890821B2Method and device for dual-differential sensingCHANG CHIN-FU·Filed 2011·Granted Nov 18, 2014·9 cites·28 claims
- 0992US11550422B2Flexible touch screen, touch sensitive processing apparatus and method, and electronic systemEGALAX_EMPIA TECH INC·Filed 2021·Granted Jan 10, 2023·2 cites·17 claims
- 1092USD784991SStylusEGALAX_EMPIA TECH INC·Filed 2016·Granted Apr 25, 2017·41 cites·1 claims
- 1192US8570289B2Method and device for position detectionCHANG CHIN-FU·Filed 2010·Granted Oct 29, 2013·11 cites·17 claims
- 1291US9081440B2Device and method for writing on capacitive touch sensor by stylus with conductive head and insulating bodyCHANG CHIN-FU·Filed 2011·Granted Jul 14, 2015·8 cites·14 claims
- 1391US8564564B2Method and device for position detectionCHANG CHIN-FU·Filed 2011·Granted Oct 22, 2013·11 cites·12 claims
- 1490US9910529B2Method, device, and system for detecting transmitter approaching or touching touch sensitive displayEGALAX_EMPIA TECH INC·Filed 2014·Granted Mar 6, 2018·13 cites·16 claims
- 1590US8970552B2Method and device for position detectionEgalax—Empia Technology Inc·Filed 2013·Granted Mar 3, 2015·8 cites·19 claims
- 1690US8531429B2Method and device for capacitive sensingCHANG CHIN-FU·Filed 2009·Granted Sep 10, 2013·17 cites·35 claims
- 1789US10254861B2Stylus for providing tilt angle and axial direction and control method thereofEGALAX_EMPIA TECH INC·Filed 2017·Granted Apr 9, 2019·4 cites·20 claims
- 1889US8754868B2Capacitive touch screenEgalax—Empia Technology Inc·Filed 2013·Granted Jun 17, 2014·6 cites·15 claims
- 1989US8614684B2Capacitive touch screenCHANG CHIN-FU·Filed 2011·Granted Dec 24, 2013·6 cites·18 claims
- 2089US8531426B2Capacitive touch with driving conductive strips closer to an external object and without rear shielding layerCHANG CHIN-FU·Filed 2012·Granted Sep 10, 2013·6 cites·21 claims
- 2189US8502794B2Capacitive touch sensitive display with dummy pads and without rear shielding layerCHANG CHIN-FU·Filed 2011·Granted Aug 6, 2013·6 cites·21 claims
- 2289US8400422B2Method and device for analyzing positionsCHANG CHIN-FU·Filed 2010·Granted Mar 19, 2013·7 cites·20 claims
- 2388US9483152B2Method and device for dual-differential sensingEGALAX_EMPIA TECH INC·Filed 2015·Granted Nov 1, 2016·3 cites·19 claims
- 2488US8600698B2Method and device for analyzing positionsCHANG CHIN-FU·Filed 2010·Granted Dec 3, 2013·6 cites·15 claims
- 2587US11669214B2System, method and apparatus with reduction of static electric charges effect on touch panel detectionEGALAX_EMPIA TECH INC·Filed 2022·Granted Jun 6, 2023·1 cites·3 claims
- 2685US11775113B2Touch sensitive processing apparatus and touch system for calculating pressure calibration function and method thereofEGALAX_EMPIA TECH INC·Filed 2021·Granted Oct 3, 2023·1 cites·12 claims
- 2785US10503288B2Stylus and control method thereofEGALAX_EMPIA TECH INC·Filed 2019·Granted Dec 10, 2019·2 cites·20 claims
- 2885US10241619B2Touch sensitive processing apparatus and electronic system for detecting whether touch panel is mostly covered by conductive liquid or object and method thereofEGALAX_EMPIA TECH INC·Filed 2016·Granted Mar 26, 2019·3 cites·21 claims
- 2985US9798427B2Method and device for dual-differential sensingEGALAX_EMPIA TECH INC·Filed 2014·Granted Oct 24, 2017·2 cites·15 claims
- 3085US8896548B2Capacitive touch screen with method and device for converting sensing information including zero cross pointCHANG CHIN-FU·Filed 2010·Granted Nov 25, 2014·7 cites·16 claims
- 3185US8730193B2Capacitive touchscreen with rhombic and hexagonal padsCHANG CHIN-FU·Filed 2012·Granted May 20, 2014·4 cites·21 claims
- 3285US8614685B2Capacitive touch screenCHANG CHIN-FU·Filed 2011·Granted Dec 24, 2013·4 cites·18 claims
- 3385US8614687B2Capacitive touch screenCHANG CHIN-FU·Filed 2011·Granted Dec 24, 2013·4 cites·16 claims
- 3485US8614686B2Capacitive touch screenCHANG CHIN-FU·Filed 2011·Granted Dec 24, 2013·4 cites·21 claims
- 3585US8537131B2Method and device for converting sensing informationCHANG CHIN-FU·Filed 2011·Granted Sep 17, 2013·7 cites·16 claims
- 3684US10739920B2Touch sensitive processing apparatus, system and method thereofEGALAX_EMPIA TECH INC·Filed 2018·Granted Aug 11, 2020·3 cites·13 claims
- 3784US10261610B2Touch control apparatus for detecting tilt angle and axial direction of stylus and control method thereofEGALAX_EMPIA TECH INC·Filed 2018·Granted Apr 16, 2019·2 cites·19 claims
- 3884US10162438B2Stylus for providing tilt angle and axial direction and control method thereofEGALAX_EMPIA TECH INC·Filed 2017·Granted Dec 25, 2018·2 cites·29 claims
- 3983US10423279B2Touch sensitive processing apparatus and electronic system for detecting whether touch panel is mostly covered by conductive liquid or object and method thereofEGALAX_EMPIA TECH INC·Filed 2019·Granted Sep 24, 2019·2 cites·20 claims
- 4083US10001847B2Touch control apparatus for detecting tilt angle and axial direction of stylus and control method thereofEGALAX_EMPIA TECH INC·Filed 2017·Granted Jun 19, 2018·2 cites·19 claims
- 4183US7808490B2Device and method for determining touch position on sensing area of capacitive touch panelEGALAX & MDASH EMPIA TECHNOLOG·Filed 2007·Granted Oct 5, 2010·14 cites·16 claims
- 4282US8624866B2Touch method and device for distinguishing true touchCHANG CHIN-FU·Filed 2009·Granted Jan 7, 2014·8 cites·30 claims
- 4382US8624635B2Sensor circuit for concurrent integration of multiple differential signals and operating method thereofEGALAX EMPIA TECHNOLOGY INC·Filed 2012·Granted Jan 7, 2014·8 cites·30 claims
- 4482US8564557B2Device and method for parallel-scanning differential touch detectionCHANG CHIN-FU·Filed 2010·Granted Oct 22, 2013·3 cites·38 claims
- 4581US11169626B2Transmitter, touch sensitive processing apparatus and processing method thereof and electronic systemEGALAX_EMPIA TECH INC·Filed 2020·Granted Nov 9, 2021·1 cites·21 claims
- 4681US9977556B2Controller for position detectionEGALAX_EMPIA TECH INC·Filed 2017·Granted May 22, 2018·1 cites·12 claims
- 4781US9952716B2Detecting method and device for touch screenEGALAX_EMPIA TECH INC·Filed 2017·Granted Apr 24, 2018·3 cites·14 claims
- 4881US9081441B2Method and device for analyzing two-dimension sensing informationCHANG CHIN-FU·Filed 2011·Granted Jul 14, 2015·4 cites·20 claims
- 4981US8704798B2Detecting method and device for capacitive touch screenCHANG CHIN-FU·Filed 2012·Granted Apr 22, 2014·5 cites·20 claims
- 5081US4947524AResilient sheet-steel paper clipCHANG CHIN FU·Filed 1990·Granted Aug 14, 1990·42 cites·1 claims
Showing the top 50 of 200 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →