Inventor · disambiguated record
Guan-Hua Tzeng
Also filed as: TZENG GUAN-HUA
55 granted patents·1 pending application·1,562 citations·filing 2009–2023
99Inventor score
Files withCHENG UEI PREC IND CO LTD23KINGSTON DIGITAL INC20TZENG GUAN-HUA11HEWLETT PACKARD DEVELOPMENT CO1LAN SHUN-CHIEN1
Top patents by PatentIndex Score
56 records- 0199USD613510SDigital photo frameCHENG UEI PREC IND CO LTD·Filed 2009·Granted Apr 13, 2010·152 cites·1 claims
- 0296USD815614SHeadsetKINGSTON DIGITAL INC·Filed 2016·Granted Apr 17, 2018·116 cites·1 claims
- 0395USD643433SSleeve for tablet PCCHENG UEI PREC IND CO LTD·Filed 2010·Granted Aug 16, 2011·128 cites·1 claims
- 0495USD641756SSleeve for tablet PCCHENG UEI PREC IND CO LTD·Filed 2010·Granted Jul 19, 2011·126 cites·1 claims
- 0594USD808359SHeadsetKINGSTON DIGITAL INC·Filed 2016·Granted Jan 23, 2018·65 cites·1 claims
- 0694USD617299SMobile phoneCHENG UEI PREC IND CO LTD·Filed 2009·Granted Jun 8, 2010·56 cites·1 claims
- 0793USD664579SWebcamTZENG GUAN-HUA·Filed 2011·Granted Jul 31, 2012·57 cites·1 claims
- 0893USD626580SWebcamCHENG UEI PREC IND CO LTD·Filed 2009·Granted Nov 2, 2010·49 cites·1 claims
- 0992USD818990SPair of earphonesKINGSTON DIGITAL INC·Filed 2016·Granted May 29, 2018·42 cites·1 claims
- 1091USD643843SSleeve for tablet PCCHENG UEI PREC IND CO LTD·Filed 2010·Granted Aug 23, 2011·59 cites·1 claims
- 1191USD627814SWireless webcamCHENG UEI PREC IND CO LTD·Filed 2009·Granted Nov 23, 2010·42 cites·1 claims
- 1290USD633070SMobile phoneCHENG UEI PREC IND CO LTD·Filed 2010·Granted Feb 22, 2011·42 cites·1 claims
- 1389USD631079SWebcamCHENG UEI PREC IND CO LTD·Filed 2010·Granted Jan 18, 2011·40 cites·1 claims
- 1489USD609018SDigital photo frameCHENG UEI PREC IND CO LTD·Filed 2009·Granted Feb 2, 2010·38 cites·1 claims
- 1588USD840373SHeadsetKINGSTON DIGITAL INC·Filed 2017·Granted Feb 12, 2019·28 cites·1 claims
- 1687USD830361SMouseKINGSTON DIGITAL INC·Filed 2017·Granted Oct 9, 2018·29 cites·1 claims
- 1787USD811371SAudio control deviceKINGSTON DIGITAL INC·Filed 2016·Granted Feb 27, 2018·34 cites·1 claims
- 1887USD810047SEarphone tipKINGSTON DIGITAL INC·Filed 2016·Granted Feb 13, 2018·29 cites·1 claims
- 1987USD632718SWebcamCHENG UEI PREC IND CO LTD·Filed 2010·Granted Feb 15, 2011·37 cites·1 claims
- 2087USD617300SMobile phoneCHENG UEI PREC IND CO LTD·Filed 2009·Granted Jun 8, 2010·34 cites·1 claims
- 2184USD670271SSpeakerTZENG GUAN-HUA·Filed 2011·Granted Nov 6, 2012·30 cites·1 claims
- 2282USD656615SHeartbeat ringTZENG GUAN-HUA·Filed 2011·Granted Mar 27, 2012·28 cites·1 claims
- 2376USD794609SAudio control deviceKINGSTON DIGITAL INC·Filed 2016·Granted Aug 15, 2017·17 cites·1 claims
- 2476USD636758SBluetooth speakerCHENG UEI PREC IND CO LTD·Filed 2010·Granted Apr 26, 2011·21 cites·1 claims
- 2575USD798308SData accessing deviceKINGSTON DIGITAL INC·Filed 2016·Granted Sep 26, 2017·15 cites·1 claims
- 2675USD622266SBluetooth headsetCHENG UEI PREC IND CO LTD·Filed 2009·Granted Aug 24, 2010·19 cites·1 claims
- 2774USD791749SNetwork interface deviceKINGSTON DIGITAL INC·Filed 2015·Granted Jul 11, 2017·15 cites·1 claims
- 2873USD672334SSpeakerTZENG GUAN-HUA·Filed 2011·Granted Dec 11, 2012·18 cites·1 claims
- 2970USD645437SMobile phoneCHENG UEI PREC IND CO LTD·Filed 2010·Granted Sep 20, 2011·16 cites·1 claims
- 3069USD811396SKeyboardKINGSTON DIGITAL INC·Filed 2017·Granted Feb 27, 2018·13 cites·1 claims
- 3168USD810082SKeyboardKINGSTON DIGITAL INC·Filed 2017·Granted Feb 13, 2018·11 cites·1 claims
- 3268USD628222SWireless webcamCHENG UEI PREC IND CO LTD·Filed 2009·Granted Nov 30, 2010·14 cites·1 claims
- 3367USD865708SHeadsetKINGSTON DIGITAL INC·Filed 2018·Granted Nov 5, 2019·10 cites·1 claims
- 3466US8666107B2LoudspeakerTZENG GUAN-HUA·Filed 2012·Granted Mar 4, 2014·2 cites·5 claims
- 3566USD622706SBluetooth headsetCHENG UEI PREC IND CO LTD·Filed 2009·Granted Aug 31, 2010·13 cites·1 claims
- 3665USD638837SWireless mouseCHENG UEI PREC IND CO LTD·Filed 2010·Granted May 31, 2011·13 cites·1 claims
- 3763USD648769SMicro projectorTZENG GUAN-HUA·Filed 2011·Granted Nov 15, 2011·12 cites·1 claims
- 3862USD774038SData accessing deviceKINGSTON DIGITAL INC·Filed 2015·Granted Dec 13, 2016·9 cites·1 claims
- 3962USD674714SGPS navigationCHENG UEI PREC IND CO LTD·Filed 2011·Granted Jan 22, 2013·11 cites·1 claims
- 4061USD680535SNFC deviceTZENG GUAN-HUA·Filed 2011·Granted Apr 23, 2013·11 cites·1 claims
- 4159USD645038SEbook reading deviceCHENG UEI PREC IND CO LTD·Filed 2010·Granted Sep 13, 2011·10 cites·1 claims
- 4254USD680536SMulti-media playerTZENG GUAN-HUA·Filed 2011·Granted Apr 23, 2013·8 cites·1 claims
- 4352USD901503SKeyboardKINGSTON DIGITAL INC·Filed 2018·Granted Nov 10, 2020·5 cites·1 claims
- 4451USD821839SKeycap PullerKINGSTON DIGITAL INC·Filed 2017·Granted Jul 3, 2018·5 cites·1 claims
- 4551USD680534SMulti-media playerTZENG GUAN-HUA·Filed 2011·Granted Apr 23, 2013·7 cites·1 claims
- 4649USD665442SMicro projectorTZENG GUAN-HUA·Filed 2011·Granted Aug 14, 2012·6 cites·1 claims
- 4747USD875069SPair of earphonesKINGSTON DIGITAL INC·Filed 2018·Granted Feb 11, 2020·4 cites·1 claims
- 4846USD1093336SHeadsetHEWLETT PACKARD DEVELOPMENT CO·Filed 2023·Granted Sep 16, 2025·0 cites·1 claims
- 4944USD875738SKeyboard switchKINGSTON DIGITAL INC·Filed 2018·Granted Feb 18, 2020·3 cites·1 claims
- 5044USD643753SPortable GPS navigationCHENG UEI PREC IND CO LTD·Filed 2010·Granted Aug 23, 2011·4 cites·1 claims
Showing the top 50 of 56 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →