Inventor · disambiguated record
Yasushi Sugawara
Also filed as: SUGAWARA YASUSHI
46 granted patents·19 pending applications·938 citations·filing 1993–2013
98Inventor score
Files withMATSUSHITA ELECTRIC INDUSTRIAL CO LTD38PANASONIC CORP11SUGAWARA YASUSHI6MORITA JUNJI4MITSUBISHI GAS CHEMICAL CO1
Top patents by PatentIndex Score
65 records- 0197US6057051AMiniaturized fuel cell assemblyMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted May 2, 2000·211 cites·15 claims
- 0292US6531236B1Polymer electrolyte fuel cell stackMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Mar 11, 2003·41 cites·1 claims
- 0386US6818339B1Polymer electrolyte type fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Nov 16, 2004·30 cites·18 claims
- 0485US6372373B1Solid polymer electrolyte fuel cell and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Apr 16, 2002·54 cites·23 claims
- 0583US8071243B2Fuel cell systemSUGAWARA YASUSHI·Filed 2006·Granted Dec 6, 2011·6 cites·16 claims
- 0682US6316139B1Fuel cell having a gasket with an adhesive layerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Nov 13, 2001·67 cites·6 claims
- 0781US7150934B2Electrolyte film electrode union, fuel cell containing the same and process for producing themMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Dec 19, 2006·17 cites·6 claims
- 0880US9196910B2Fuel cellYAMAUCHI MASAKI·Filed 2012·Granted Nov 24, 2015·3 cites·9 claims
- 0980US6991870B2Gas diffusion electrode and fuel cell using thisMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Jan 31, 2006·18 cites·10 claims
- 1079US8003273B2Polymer electrolyte fuel cell and fuel cell sealing member for the samePANASONIC CORP·Filed 2006·Granted Aug 23, 2011·4 cites·15 claims
- 1178US6660419B1Solid polymer electrolyte fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Dec 9, 2003·56 cites·17 claims
- 1277US8039154B2Fuel cell system, method of starting fuel cell systemPANASONIC CORP·Filed 2004·Granted Oct 18, 2011·15 cites·9 claims
- 1377US7220514B2Polymer electrolyte fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted May 22, 2007·14 cites·10 claims
- 1476US6579639B1Polymer electrolyte fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jun 17, 2003·13 cites·3 claims
- 1574US6869719B2Polymer electrolyte fuel cell stackMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Mar 22, 2005·9 cites·9 claims
- 1673US7201993B2Polymer electrolyte fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Apr 10, 2007·9 cites·4 claims
- 1773US6667268B1Polymer electrolyte fuel cell having a porous catalyst layer and a method for manufacturing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Dec 23, 2003·10 cites·12 claims
- 1873US6215272B1Fuel cell deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Apr 10, 2001·67 cites·6 claims
- 1971US7097932B1Polymer electrolytic fuel cell and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Aug 29, 2006·8 cites·8 claims
- 2070US7455703B2Method for manufacturing polymer electrolyte fuel cellPANASONIC CORP·Filed 2006·Granted Nov 25, 2008·1 cites·9 claims
- 2168US6329093B1Polymer electrolyte fuel cell stackMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Dec 11, 2001·39 cites·8 claims
- 2267US7316860B2Polymer electrolyte fuel cell and production method of the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jan 8, 2008·6 cites·1 claims
- 2367US6746793B1Polymer electrolyte fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Jun 8, 2004·32 cites·12 claims
- 2467US6194092B1Fuel cell apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Feb 27, 2001·39 cites·3 claims
- 2566US8278002B2Fuel-cell and fuel cell system including the sameSUGAWARA YASUSHI·Filed 2007·Granted Oct 2, 2012·1 cites·14 claims
- 2665US6210823B1Polymer electrolyte fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Apr 3, 2001·36 cites·18 claims
- 2761US7943261B2Method of operating fuel cell system and fuel cell systemPANASONIC CORP·Filed 2003·Granted May 17, 2011·4 cites·1 claims
- 2859US2008085440A1Polymer electrolyte fuel cell and production method of the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2007·Application pending·0 cites
- 2958US7132187B2Polymer electrolyte fuel cell and production method thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Nov 7, 2006·3 cites·7 claims
- 3057US7364813B2Ink for forming catalyst layer, and electrode and membrane-electrode assembly using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Apr 29, 2008·2 cites·9 claims
- 3157US6060187ASolid polymer type fuel cell and method for manufacturing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted May 9, 2000·21 cites·10 claims
- 3254US7416807B2Polymer electrolyte fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Aug 26, 2008·1 cites·12 claims
- 3354US6194094B1Polymer electrolyte fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Feb 27, 2001·23 cites·6 claims
- 3454US2005214599A1Polymer electrolyte fuel cell and method for prudoucing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Application pending·0 cites
- 3554US2011177414A1Fuel cell power generation systemPANASONIC CORP·Filed 2009·Application pending·0 cites
- 3653US5393386AMethod for preparing aqueous quaternary ammonium hydroxide solutionMITSUBISHI GAS CHEMICAL CO·Filed 1993·Granted Feb 28, 1995·9 cites·18 claims
- 3753US2010248045A1Fuel cell system and method for operating the sameSAKAI OSAMU·Filed 2008·Application pending·0 cites
- 3852US10326148B2Fuel cell gas diffusion layer and method of manufacturing samePANASONIC CORP·Filed 2013·Granted Jun 18, 2019·0 cites·4 claims
- 3952US6660424B1Fuel cell and method of manufacture thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Dec 9, 2003·20 cites·7 claims
- 4052US5866423AMeasuring method of the specific surface area available for reaction of noble metal catalyst in the electrode of polymer electrolyte membrane fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Feb 2, 1999·18 cites·20 claims
- 4152US2014120452A1Fuel cell and manufacturing method thereofPANASONIC CORP·Filed 2013·Application pending·0 cites
- 4251US2005003260A1Polymer electrolyte fuel cell stackMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Application pending·0 cites
- 4350US2010028731A1Operation method of fuel cell system and fuel cell systemSUGAWARA YASUSHI·Filed 2008·Application pending·0 cites
- 4449US10164271B2Polymer electrolyte fuel cell with a recess is formed downstream of a gas lead-out portPANASONIC CORP·Filed 2013·Granted Dec 25, 2018·0 cites·11 claims
- 4549US2004170885A1Polymer electrolyte fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Application pending·0 cites
- 4648US8771892B2Fuel cell power generation system and operation stop method of the sameSUGAWARA YASUSHI·Filed 2012·Granted Jul 8, 2014·0 cites·6 claims
- 4748US2004101743A1Polymer electrolyte fuel cell and preparation method for polymer electrolyte fuel cellFiled 2003·Application pending·0 cites
- 4847US2004086760A1Polymer electrolyte fuel cell and preparation method for polymer electrolyte fuel cellFiled 2003·Application pending·0 cites
- 4946US8728674B2Fuel cell system with controlled stop process for a shut-down operationMORITA JUNJI·Filed 2009·Granted May 20, 2014·0 cites·23 claims
- 5046US2003096154A1Electrode for fuel cell and method of producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Application pending·0 cites
Showing the top 50 of 65 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Yasushi Sugawara 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 →