Inventor · disambiguated record
Wen-Chen Chang
Also filed as: CHANG WEN-CHEN
29 granted patents·10 pending applications·383 citations·filing 1994–2017
96Inventor score
Top patents by PatentIndex Score
39 records- 0188US6193324B1Wheel deviceFiled 1999·Granted Feb 27, 2001·53 cites·2 claims
- 0287US6382736B1Wheel deviceFiled 2001·Granted May 7, 2002·32 cites·2 claims
- 0386US6017771AMethod and system for yield loss analysis by yield management systemTAIWAN SEMICONDUCTOR MFG·Filed 1998·Granted Jan 25, 2000·80 cites·6 claims
- 0476US8557477B2Fuel cell stackCHEN CHI-CHANG·Filed 2009·Granted Oct 15, 2013·5 cites·22 claims
- 0573US6470529B1Retractable handle assemblyFiled 2001·Granted Oct 29, 2002·21 cites·1 claims
- 0671US9718308B1Air cell castorCHANG WEN-CHEN·Filed 2016·Granted Aug 1, 2017·2 cites·4 claims
- 0771US8557482B2Fuel cell fluid flow field plate comprising an upward extending portion and a cover extending portionCHEN CHI-CHANG·Filed 2010·Granted Oct 15, 2013·1 cites·11 claims
- 0866US8546046B2Method for fabricating bi-polar plate of fuel cell and bi-polar plate of fuel cellWANG WEN-LIN·Filed 2010·Granted Oct 1, 2013·1 cites·12 claims
- 0965US8263284B2Fuel cell fluid flow plate with shell passageway pieceCHEN CHI-CHANG·Filed 2009·Granted Sep 11, 2012·1 cites·26 claims
- 1064US7570145B2Soft magnetism thin film inductor and magnetic multi-element alloy filmIND TECH RES INST·Filed 2007·Granted Aug 4, 2009·3 cites·23 claims
- 1163US8841045B2Method for fabricating bi-polar plate of fuel cellIND TECH RES INST·Filed 2013·Granted Sep 23, 2014·0 cites·11 claims
- 1263USD460265SSuitcase handleFiled 2001·Granted Jul 16, 2002·13 cites·1 claims
- 1363US6389323B1Method and system for yield loss analysis by yield management systemTAIWAN SEMICONDUCTOR MFG·Filed 1999·Granted May 14, 2002·26 cites·6 claims
- 1462US8691475B2Method for forming fuel cell fluid flow field plateIND TECH RES INST·Filed 2013·Granted Apr 8, 2014·0 cites·9 claims
- 1562US2014080028A1Fuel Cell DevicesIND TECH RES INST·Filed 2013·Application pending·0 cites
- 1658US6382375B1Suitcase carrierFiled 2001·Granted May 7, 2002·4 cites·2 claims
- 1757US8045685B2Movable monitoring equipment and remote monitoring and directing systemIND TECH RES INST·Filed 2006·Granted Oct 25, 2011·6 cites·11 claims
- 1856US6009598ARotatable drawbar deviceFiled 1998·Granted Jan 4, 2000·28 cites·2 claims
- 1955US2014291096A1Suitcase with Retractable Handle AssemblyCHANG WEN-CHEN·Filed 2013·Application pending·0 cites
- 2054US8691473B2Fuel cell module having non-planar component surfaceCHEN CHI-CHANG·Filed 2010·Granted Apr 8, 2014·0 cites·14 claims
- 2151US2004035662A1Suitcase handle deviceFiled 2003·Application pending·0 cites
- 2250US2010227243A1Fuel cell stack with metal separatorsIND TECH RES INST·Filed 2009·Application pending·0 cites
- 2349US2003192146A1Armrest elevator deviceFiled 2002·Application pending·0 cites
- 2448US5433461AStructure of hand truckFiled 1994·Granted Jul 18, 1995·22 cites·5 claims
- 2547US10421317B2Visible spring-biased castor assemblyCHANG WEN CHEN·Filed 2017·Granted Sep 24, 2019·0 cites·5 claims
- 2646US6223392B1Retractable handle assemblyFiled 1999·Granted May 1, 2001·18 cites·1 claims
- 2745US5875520AExtensible handle deviceFiled 1997·Granted Mar 2, 1999·18 cites·1 claims
- 2842US8828621B2Modularized fuel cell devices and fluid flow plate assembliesCHEN CHI-CHANG·Filed 2010·Granted Sep 9, 2014·0 cites·4 claims
- 2942US5655260AAdjustable handle device of a suitcaseFiled 1996·Granted Aug 12, 1997·16 cites·1 claims
- 3042US2003178888A1Decorative deviceFiled 2002·Application pending·0 cites
- 3142US2011132477A1Fluid flow plate assembly having parallel flow channelsCHEN CHI-CHANG·Filed 2010·Application pending·0 cites
- 3241US2011136042A1Fluid flow plate assembliesCHEN CHI-CHANG·Filed 2010·Application pending·0 cites
- 3340US8652708B2Fluid flow plate with a supporting frame for a fuel cellSHIU HUAN-RUEI·Filed 2010·Granted Feb 18, 2014·0 cites·7 claims
- 3439US6295698B1Retractable handleFiled 1999·Granted Oct 2, 2001·16 cites·1 claims
- 3537US2002139628A1Retractable handle assemblyFiled 2001·Application pending·0 cites
- 3634US6003884AHandcartFiled 1997·Granted Dec 21, 1999·11 cites·3 claims
- 3734US2008018454A1Remote mobile medical communication apparatus, system and methodCHAN KUO-HUNG·Filed 2006·Application pending·0 cites
- 3832US6231130B1Wheel support deviceFiled 1999·Granted May 15, 2001·6 cites·1 claims
- 3927USD376097SWheel holder of a trunkCHANG WEN-CHEN·Filed 1995·Granted Dec 3, 1996·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →