Inventor · disambiguated record
Yichuan Pan
Also filed as: PAN YICHUAN
27 granted patents·4 pending applications·435 citations·filing 1995–2022
97Inventor score
Files withEASTMAN KODAK CO10PROTOSTAR INC A DELAWARE CORP9PROTOSTAR INC5HEWLETT PACKARD CO2PAN YICHUAN2
Top patents by PatentIndex Score
31 records- 0197US10973730B2Wheeled walkerPROTOSTAR INC A DELAWARE CORP·Filed 2020·Granted Apr 13, 2021·7 cites·20 claims
- 0296US10617592B2Wheeled walkerPROTOSTAR INC A DELAWARE CORP·Filed 2018·Granted Apr 14, 2020·16 cites·20 claims
- 0396US9585807B2Collapsible upright wheeled walker apparatusPROTOSTAR INC·Filed 2016·Granted Mar 7, 2017·33 cites·7 claims
- 0496US7004574B2Ink delivery system including a pulsation dampenerEASTMAN KODAK CO·Filed 2005·Granted Feb 28, 2006·29 cites·37 claims
- 0595US11071676B2Collapsible wheeled walker with stability enhancing bracket apparatus and methodPROTOSTAR INC·Filed 2020·Granted Jul 27, 2021·9 cites·20 claims
- 0695US6908179B2Ink level and negative pressure control in an ink jet printerEASTMAN KODAK CO·Filed 2002·Granted Jun 21, 2005·51 cites·26 claims
- 0794US10828226B2Collapsible upright wheeled walker apparatusPROTOSTAR INC·Filed 2020·Granted Nov 10, 2020·4 cites·19 claims
- 0894US10307321B2Wheeled walker with a movable seatPROTOSTAR INC A DELAWARE CORP·Filed 2018·Granted Jun 4, 2019·15 cites·17 claims
- 0993US10555866B2Wheeled walker wheel direction lock apparatus and methodPROTOSTAR INC A DELAWARE CORP·Filed 2018·Granted Feb 11, 2020·20 cites·19 claims
- 1092US8716598B2Case for housing and protecting an electronic devicePAN YICHUAN·Filed 2012·Granted May 6, 2014·17 cites·20 claims
- 1191US10588815B2Collapsible upright wheeled walker apparatusPROTOSTAR INC·Filed 2019·Granted Mar 17, 2020·6 cites·15 claims
- 1291US10085909B2Collapsible upright wheeled walker apparatusPROTOSTAR INC A DELAWARE CORP·Filed 2017·Granted Oct 2, 2018·6 cites·11 claims
- 1388US6866359B2Ink jet printhead quality management system and methodEASTMAN KODAK CO·Filed 2002·Granted Mar 15, 2005·38 cites·24 claims
- 1485US7210771B2Ink delivery system with print cartridge, container and reservoir apparatus and methodEASTMAN KODAK CO·Filed 2004·Granted May 1, 2007·25 cites·16 claims
- 1583USD874351SWheeled walkerPROTOSTAR INC A DELAWARE CORP·Filed 2018·Granted Feb 4, 2020·23 cites·1 claims
- 1683US10322056B2Collapsible upright wheeled walker apparatusPROTOSTAR INC A DELAWARE CORP·Filed 2018·Granted Jun 18, 2019·2 cites·20 claims
- 1781USD902791SWheeled walkerPROTOSTAR INC A DELAWARE CORP·Filed 2019·Granted Nov 24, 2020·19 cites·1 claims
- 1881US8735721B2Case for housing and protecting an electronic devicePAN YICHUAN·Filed 2013·Granted May 27, 2014·5 cites·20 claims
- 1980US10434031B2Wheeled walker with a moveable seatPROTOSTAR INC·Filed 2019·Granted Oct 8, 2019·2 cites·20 claims
- 2075US6877846B2Replaceable ink jet supply with anti-siphon back pressure controlEASTMAN KODAK CO·Filed 2002·Granted Apr 12, 2005·16 cites·47 claims
- 2172US6935731B2Ink jet print system including print cartridgeEASTMAN KODAK CO·Filed 2003·Granted Aug 30, 2005·14 cites·8 claims
- 2272US6513905B2Nozzle cross talk reduction in an ink jet printerENCAD INC·Filed 2000·Granted Feb 4, 2003·14 cites·22 claims
- 2367US5755032AMethod of forming an inkjet printhead with channels connecting trench and firing chambersHEWLETT PACKARD CO·Filed 1995·Granted May 26, 1998·24 cites·7 claims
- 2466US7234787B2Liquid level detection method and apparatusEASTMAN KODAK CO·Filed 2004·Granted Jun 26, 2007·14 cites·28 claims
- 2565US2021338516A1Collapsible wheeled walker with stability enhancing bracket apparatus and methodPROTOSTAR INC A DELAWARE CORP·Filed 2021·Application pending·0 cites
- 2662US5685074AMethod of forming an inkjet printhead with trench and backward peninsulasHEWLETT PACKARD CO·Filed 1995·Granted Nov 11, 1997·20 cites·7 claims
- 2757US6692116B2Replaceable ink jet print head cartridge assembly with reduced internal pressure for shippingEASTMAN KODAK CO·Filed 2002·Granted Feb 17, 2004·6 cites·8 claims
- 2854US2023337873A1Portable urination apparatusUNIGENT CO·Filed 2022·Application pending·0 cites
- 2948US7393071B2Ink level and negative pressure control in an ink jet printerEASTMAN KODAK CO·Filed 2005·Granted Jul 1, 2008·0 cites·19 claims
- 3045US2017065479A1Adjustable wheel suspension assembly for a wheeled walkerFELLINGHAM PETER JAMES·Filed 2016·Application pending·0 cites
- 3132US2003227522A1Replaceable ink jet print head cartridge assembly with installation featureEASTMAN KODAK CO·Filed 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →