Inventor · disambiguated record
Tsung-Jen Chuang
Also filed as: CHUANG TSUNG-JEN
81 granted patents·55 pending applications·287 citations·filing 1993–2017
98Inventor score
Files withHONGFUJIN PREC IND SHENZHEN27HON HAI PREC IND CO LTD26FU TAI HUA IND SHENZHEN CO LTD14Huang ren-wen10WANG CHUNG-JEN7
Top patents by PatentIndex Score
136 records- 0192US7557466B2Humidity detection and power cut-off deviceHONGFUJIN PREC IND SHENZHEN·Filed 2007·Granted Jul 7, 2009·30 cites·10 claims
- 0292USD468307SPersonal digital assistantSILITEK CORP·Filed 2001·Granted Jan 7, 2003·48 cites·1 claims
- 0390US8751030B2Audio player and operating method automatically selecting music type mode according to environment noiseYOU QIANG·Filed 2011·Granted Jun 10, 2014·13 cites·1 claims
- 0489US8553419B2Card tray ejection mechanism and electronic device using the sameLuo wen-dong·Filed 2011·Granted Oct 8, 2013·20 cites·16 claims
- 0583US8472157B2Overvoltage and overcurrent protection circuitYin ji-xiang·Filed 2011·Granted Jun 25, 2013·7 cites·18 claims
- 0682US7801511B2Media player capable of backing up data from a mobile phone and preventing other people from accessing the backed upped dataHONGFUJIN PREC IND SHENZHEN·Filed 2007·Granted Sep 21, 2010·12 cites·7 claims
- 0781US7609081B2Testing system and method for testing an electronic deviceHONGFUJIN PREC IND SHENZHEN·Filed 2008·Granted Oct 27, 2009·11 cites·13 claims
- 0879US7948478B2Electrical touch pad regulating sensitivity based on ambient humidity and method thereofHON HAI PREC IND CO LTD·Filed 2007·Granted May 24, 2011·9 cites·13 claims
- 0977US7880393B2Power-saving circuitHONGFUJIN PREC IND SHENZHEN·Filed 2007·Granted Feb 1, 2011·8 cites·13 claims
- 1075US7827420B2Portable device with an automatic power off protection and method for sameHONGFUJIN PREC IND SHENZHEN·Filed 2007·Granted Nov 2, 2010·7 cites·8 claims
- 1174US8983087B2Audio playing device having earphone jack with rotation detectorYOU QIANG·Filed 2012·Granted Mar 17, 2015·4 cites·14 claims
- 1273US8249277B2Apparatus capable of switching volume adjustment mode automatically and volume adjustment method thereofWONG SHIH-FANG·Filed 2008·Granted Aug 21, 2012·6 cites·5 claims
- 1371US8983641B2Electronic device for activating and controlling user-controllable functions thereof according to an earphone connected thereto, and associated methodCHUANG TSUNG-JEN·Filed 2011·Granted Mar 17, 2015·3 cites·15 claims
- 1471US6967831B2Foldable keyboardLITE ON TECHNOLOGY CORP·Filed 2003·Granted Nov 22, 2005·16 cites·17 claims
- 1569US9235281B2Touch-sensitive device with protection function and protection methodFU TAI HUA IND SHENZHEN CO LTD·Filed 2012·Granted Jan 12, 2016·2 cites·14 claims
- 1669US9123216B2Detection of objects by electronic gloveHON HAI PREC IND CO LTD·Filed 2013·Granted Sep 1, 2015·3 cites·10 claims
- 1769US8829921B2Alternating current voltage detection circuitZHANG JUN·Filed 2011·Granted Sep 9, 2014·2 cites·7 claims
- 1869US7714518B2Ballast for cold cathode fluorescent lampHONGFUJIN PREC IND SHENZHEN·Filed 2007·Granted May 11, 2010·3 cites·18 claims
- 1968US10348025B2Lockable storage deviceHONGFUJIN PREC ELECT ZHENGZHOU CO LTD·Filed 2017·Granted Jul 9, 2019·1 cites·11 claims
- 2068US10101411B2Anti-static circuit and electronic device using the sameHONGFUJIN PREC ELECT ZHENGZHOU CO LTD·Filed 2016·Granted Oct 16, 2018·1 cites·14 claims
- 2167US8983835B2Electronic device and server for processing voice messageWONG SHIH-FANG·Filed 2011·Granted Mar 17, 2015·3 cites·9 claims
- 2267US8797696B2Current leakage protection circuit, power socket and electronic device using sameHuang ren-wen·Filed 2012·Granted Aug 5, 2014·2 cites·20 claims
- 2367US8248276B2Scanning circuit and scanning method for keyboardDING LIN-KUN·Filed 2010·Granted Aug 21, 2012·3 cites·14 claims
- 2467US7667992B2Power source moduleHONGFUJIN PREC IND SHENZHEN·Filed 2007·Granted Feb 23, 2010·7 cites·16 claims
- 2566US8836286B2Storage battery charge circuitZHANG JUN-WEI·Filed 2011·Granted Sep 16, 2014·3 cites·7 claims
- 2665US7466162B2Electronic loadHONGFUJIN PREC IND SHENZHEN·Filed 2007·Granted Dec 16, 2008·4 cites·17 claims
- 2764US7783789B2Apparatus with programmable touch screen and method thereofHONGFUJIN PREC IND SHENZHEN·Filed 2007·Granted Aug 24, 2010·3 cites·2 claims
- 2864US7649461B2Passive radio frequency identification chip with a variable-capacitance diodeHONGFUJIN PREC IND SHENZHEN·Filed 2007·Granted Jan 19, 2010·2 cites·5 claims
- 2963US8478308B2Positioning system for adding location information to the metadata of an image and positioning method thereofWANG CHUNG-JEN·Filed 2011·Granted Jul 2, 2013·2 cites·7 claims
- 3063US7035089B2Portable electronic device with hidden keyboardLITE ON TECHNOLOGY CORP·Filed 2004·Granted Apr 25, 2006·8 cites·17 claims
- 3160US5371663AStage spotlight color medium structureFiled 1993·Granted Dec 6, 1994·20 cites·4 claims
- 3259US8786296B2Resistance-measuring circuit and electronic device using the sameYu qi-long·Filed 2011·Granted Jul 22, 2014·1 cites·12 claims
- 3359US8239148B2State switching device for switching states of electronic device by detecting battery voltage of the electronic device and method thereofWONG SHIH-FANG·Filed 2008·Granted Aug 7, 2012·3 cites·12 claims
- 3458US8531810B2Over-current protection circuit and electronic device with the sameHuang ren-wen·Filed 2011·Granted Sep 10, 2013·1 cites·9 claims
- 3558US8063891B2Touch pad and method for regulating sensitivity of the touch padCHUANG TSUNG-JEN·Filed 2007·Granted Nov 22, 2011·1 cites·14 claims
- 3658US7839668B2Multiple output AC/DC power adapterHONGFUJIN PREC IND SHENZHEN·Filed 2008·Granted Nov 23, 2010·4 cites·5 claims
- 3757US9383584B2Video playing systemHON HAI PREC IND CO LTD·Filed 2013·Granted Jul 5, 2016·0 cites·20 claims
- 3857US8471478B2Light control signal generating circuitYin ji-xiang·Filed 2011·Granted Jun 25, 2013·1 cites·15 claims
- 3956US8661174B2Master-slave system with reversible control direction functionWANG CHUNG-JEN·Filed 2011·Granted Feb 25, 2014·1 cites·7 claims
- 4056US8258985B2Scanning circuit and scanning method for keyboardHuang ren-wen·Filed 2010·Granted Sep 4, 2012·2 cites·11 claims
- 4156US8116511B2EarphoneWANG WEN-WU·Filed 2007·Granted Feb 14, 2012·1 cites·1 claims
- 4256US7688042B2Power factor correction apparatusHONGFUJIN PREC IND SHENZHEN·Filed 2007·Granted Mar 30, 2010·3 cites·20 claims
- 4355US7714568B2Power supplyHONGFUJIN PREC IND SHENZHEN·Filed 2007·Granted May 11, 2010·2 cites·16 claims
- 4454US8051306B2Portable computer with shared hardware resourcesHONGFUJIN PREC IND SHENZHEN·Filed 2008·Granted Nov 1, 2011·1 cites·17 claims
- 4554US2007239623A1Electronic device used for downloading or uploading dataHON HAI PREC IND CO LTD·Filed 2006·Application pending·0 cites
- 4653US7915863B2Charge protection circuit with timing functionHONGFUJIN PREC IND SHENZHEN·Filed 2008·Granted Mar 29, 2011·1 cites·5 claims
- 4752US2013027320A1Electronic device with accessible user interface for visually impariedHON HAI PREC IND CO LTD·Filed 2011·Application pending·0 cites
- 4852US2008192166A1Liquid crystal display apparatusHONGFUJIN PREC IND SHENZHEN·Filed 2007·Application pending·0 cites
- 4950US7987606B2System for testing accuracy of electronic compassHON HAI PREC IND CO LTD·Filed 2009·Granted Aug 2, 2011·0 cites·13 claims
- 5050US7791535B2Positioning device and method for measuring the distance between multiple positioning devicesHON HAI PREC IND CO LTD·Filed 2008·Granted Sep 7, 2010·1 cites·11 claims
Showing the top 50 of 136 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Tsung-Jen Chuang files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →