Inventor · disambiguated record
Masao Utsunomiya
Also filed as: UTSUNOMIYA MASAO
22 granted patents·14 pending applications·93 citations·filing 2001–2025
94Inventor score
Top patents by PatentIndex Score
36 records- 0182US7507490B2Metal separator for fuel cell and its production methodHONDA MOTOR CO LTD·Filed 2002·Granted Mar 24, 2009·19 cites·1 claims
- 0282US6884363B2Method of surface treatment for stainless steel product for fuel cellHONDA MOTOR CO LTD·Filed 2001·Granted Apr 26, 2005·16 cites·14 claims
- 0378US7981570B2Fuel cellHONDA MOTOR CO LTD·Filed 2009·Granted Jul 19, 2011·3 cites·3 claims
- 0477US8221923B2Stop method for fuel cell system and fuel cell systemINAI SHIGERU·Filed 2006·Granted Jul 17, 2012·4 cites·16 claims
- 0576US7722977B2Fuel cell stack comprising current collector provided at least at one fluid passageHONDA MOTOR CO LTD·Filed 2005·Granted May 25, 2010·3 cites·9 claims
- 0672US6858339B2Separator for fuel cell and fuel cellHONDA MOTOR CO LTD·Filed 2001·Granted Feb 22, 2005·10 cites·3 claims
- 0771US8574780B2Fuel cell separator with chromium rich surface layer and method of producing the fuel cell separatorTERADA SATORU·Filed 2008·Granted Nov 5, 2013·3 cites·2 claims
- 0870US2025260035A1Fuel cell systemHONDA MOTOR CO LTD·Filed 2025·Application pending·0 cites
- 0967US7325432B2Method for manufacturing fuel cell metallic separatorHONDA MOTOR CO LTD·Filed 2002·Granted Feb 5, 2008·6 cites·6 claims
- 1066US7214440B2Metallic separator for fuel cell and production method for the sameHONDA MOTOR CO LTD·Filed 2004·Granted May 8, 2007·6 cites·5 claims
- 1164US7838171B2Metal separator for fuel cell and its production methodHONDA MOTOR CO LTD·Filed 2002·Granted Nov 23, 2010·5 cites·1 claims
- 1263US6670066B2Separator for fuel cellHONDA MOTOR CO LTD·Filed 2001·Granted Dec 30, 2003·7 cites·5 claims
- 1361US7001683B2Separator for fuel cell and method for producing the sameHONDA MOTOR CO LTD·Filed 2002·Granted Feb 21, 2006·3 cites·4 claims
- 1461US2008108282A1Method for manufacturing fuel cell metallic separatorHONDA MOTOR CO LTD·Filed 2007·Application pending·0 cites
- 1561US2008292937A1Method for manufacturing fuel cell metallic separatorHONDA MOTOR CO LTD·Filed 2007·Application pending·0 cites
- 1659US7147956B2Fuel cell and separator thereforHONDA MOTOR CO LTD·Filed 2001·Granted Dec 12, 2006·4 cites·6 claims
- 1756US7049022B2Metal separator for fuel cell and production method thereforHONDA MOTOR CO LTD·Filed 2003·Granted May 23, 2006·2 cites·5 claims
- 1856US2011033783A1Metal separator for fuel cell and its production methodHONDA MOTOR CO LTD·Filed 2010·Application pending·0 cites
- 1955US2006068262A1Separator for fuel cell and method for producing the sameHONDA MOTOR CO LTD·Filed 2005·Application pending·0 cites
- 2054US7166386B2Separator for fuel cell and method for preparation thereofHONDA MOTOR CO LTD·Filed 2002·Granted Jan 23, 2007·1 cites·9 claims
- 2151US9647278B2Metal separator for fuel cells and manufacturing method thereofHONDA MOTOR CO LTD·Filed 2013·Granted May 9, 2017·0 cites·20 claims
- 2250US2005136297A1Stop method for fuel cell system and fuel cell systemHONDA MOTOR CO LTD·Filed 2004·Application pending·0 cites
- 2349US2005142416A1Fuel cellHONDA MOTOR CO LTD·Filed 2004·Application pending·0 cites
- 2446US7475600B2Method of and apparatus for evaluating elastic member qualityHONDA MOTOR CO LTD·Filed 2006·Granted Jan 13, 2009·0 cites·6 claims
- 2546US6953636B2Press separator for fuel cell made of stainless steel press formed in contiguous corrugationsHONDA MOTOR CO LTD·Filed 2001·Granted Oct 11, 2005·1 cites·2 claims
- 2645US8980501B2Fuel cell metal separator and noble metal coating method thereforUTSUNOMIYA MASAO·Filed 2012·Granted Mar 17, 2015·0 cites·12 claims
- 2745US2005249999A1Press separator for fuel cellHONDA MOTOR CO LTD·Filed 2005·Application pending·0 cites
- 2844US7014938B2Separator for fuel cellHONDA MOTOR CO LTD·Filed 2002·Granted Mar 21, 2006·0 cites·2 claims
- 2944US2006177723A1Fuel cell stackINAI SHIGERU·Filed 2006·Application pending·0 cites
- 3043US6861172B2Current-collecting structure in fuel cell systemHONDA MOTOR CO LTD·Filed 2001·Granted Mar 1, 2005·0 cites·8 claims
- 3143US2005014053A1Fuel cellFiled 2002·Application pending·0 cites
- 3243US2003124406A1Fuel cell separatorHONDA MOTOR CO LTD·Filed 2002·Application pending·0 cites
- 3341US2005130013A1Metal separator for fuel cell and method for producing the sameHONDA MOTOR CO LTD·Filed 2004·Application pending·0 cites
- 3440US2005095489A1Metallic separator for fuel cell and manufacturing method thereforFiled 2004·Application pending·0 cites
- 3538US10529998B2Fuel cell stack, and method of determining maintenance time of fuel cell stackHONDA MOTOR CO LTD·Filed 2016·Granted Jan 7, 2020·0 cites·2 claims
- 3635US2005255357A1Metal separator for fuel cell and manufacturing method thereofUTSUNOMIYA MASAO·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →