Inventor · disambiguated record
Keigo Suematsu
Also filed as: KIKAWA SHUNJIRO · SUEMATSU KEIGO
28 granted patents·3 pending applications·75 citations·filing 2005–2022
94Inventor score
Top patents by PatentIndex Score
31 records- 0190US8746274B2Hydrogen supply apparatus and fuel gas supply apparatusTOYOTA MOTOR CO LTD·Filed 2013·Granted Jun 10, 2014·10 cites·3 claims
- 0287US9028570B2Odorant addition device and fuel gas supply systemSUEMATSU KEIGO·Filed 2008·Granted May 12, 2015·11 cites·4 claims
- 0387US7648787B2Gas leak detection device and fuel cell systemTOYOTA MOTOR CO LTD·Filed 2005·Granted Jan 19, 2010·9 cites·13 claims
- 0485US8563191B2Fuel cell system and gas leakage detection deviceKATANO KOJI·Filed 2006·Granted Oct 22, 2013·7 cites·7 claims
- 0584US9987904B2Fuel cell vehicle air-conditioning apparatus and control method thereofKOYAMA TAKASHI·Filed 2012·Granted Jun 5, 2018·11 cites·8 claims
- 0684US9908381B2Vehicle control apparatus and vehicle control methodSAKAJO YUICHI·Filed 2010·Granted Mar 6, 2018·7 cites·8 claims
- 0779US11791483B2Method for starting a fuel cell device under frost starting conditions and a fuel cell device and motor vehicleAUDI AG·Filed 2020·Granted Oct 17, 2023·2 cites·9 claims
- 0877US8652699B2Fuel cell systemSUEMATSU KEIGO·Filed 2009·Granted Feb 18, 2014·3 cites·3 claims
- 0976US9105889B2Method and apparatus for determining humidity states of individual cells in a fuel cell, method and apparatus for controlling humidity states of individual cells in a fuel cell, and a fuel cell systemSUEMATSU KEIGO·Filed 2009·Granted Aug 11, 2015·3 cites·23 claims
- 1076US8916307B2Fuel cell systemSUEMATSU KEIGO·Filed 2010·Granted Dec 23, 2014·2 cites·4 claims
- 1176US7794888B2Fuel cell systemTOYOTA MOTOR CO LTD·Filed 2007·Granted Sep 14, 2010·3 cites·3 claims
- 1272US8728672B2Fuel cell systemISHIKAWA TOMOTAKA·Filed 2009·Granted May 20, 2014·2 cites·7 claims
- 1372US7851097B2Fuel cell systemTOYOTA MOTOR CO LTD·Filed 2007·Granted Dec 14, 2010·2 cites·4 claims
- 1466US8486577B2Fuel cell systemSUEMATSU KEIGO·Filed 2006·Granted Jul 16, 2013·1 cites·8 claims
- 1563US12500250B2Method for operating a fuel cell device, the fuel cell device, and a motor vehicle outfitted with a fuel cell deviceAUDI AG·Filed 2022·Granted Dec 16, 2025·0 cites·9 claims
- 1663US9531023B2Exhaust state control device for fuel cell for mobile unitTANAKA HIROMI·Filed 2013·Granted Dec 27, 2016·2 cites·3 claims
- 1757US9425473B2Fuel cell system and method of operating fuel cell systemNAGANUMA YOSHIAKI·Filed 2009·Granted Aug 23, 2016·0 cites·5 claims
- 1856US9660283B2Current measurement deviceTOYOTA MOTOR CO LTD·Filed 2014·Granted May 23, 2017·0 cites·15 claims
- 1956US9077003B2Fuel cell systemSUEMATSU KEIGO·Filed 2009·Granted Jul 7, 2015·0 cites·6 claims
- 2055US8232019B2Fuel cell systemSUEMATSU KEIGO·Filed 2010·Granted Jul 31, 2012·0 cites·1 claims
- 2154US8871392B2Fuel cell systemWATANABE NOBUO·Filed 2007·Granted Oct 28, 2014·0 cites·9 claims
- 2252US9444112B2Fuel cell monitoring deviceDENSO CORP·Filed 2014·Granted Sep 13, 2016·0 cites·14 claims
- 2352US8790834B2Fuel cell system and method for controlling the fuel cell systemSUEMATSU KEIGO·Filed 2008·Granted Jul 29, 2014·0 cites·17 claims
- 2451US9160014B2Fuel cell system capable of performing gas purge to adjust amount of water thereinDENSO CORP·Filed 2013·Granted Oct 13, 2015·0 cites·11 claims
- 2550US2009110990A1Hydrogn supply apparatus and fuel gas supply apparatusTOYOTA JIDOSHA KABUSHKI KAISHA·Filed 2006·Application pending·0 cites
- 2649US9531022B2Fuel cell system and control method thereofTOYOTA MOTOR CO LTD·Filed 2014·Granted Dec 27, 2016·0 cites·5 claims
- 2747US8637201B2Cooling systemSUEMATSU KEIGO·Filed 2011·Granted Jan 28, 2014·0 cites·8 claims
- 2846US2010190069A1Exhaust state control device for fuel cell for mobile unitTOYOTA MOTOR CO LTD·Filed 2008·Application pending·0 cites
- 2945US9099705B2Fuel cell system, and control method for fuel cell systemISHIKAWA TOMOTAKA·Filed 2011·Granted Aug 4, 2015·0 cites·4 claims
- 3043US10071649B2Method for controlling external electric power supply system of fuel cell-mounted vehicle, and external electric power supply systemTOYOTA MOTOR CO LTD·Filed 2015·Granted Sep 11, 2018·0 cites·5 claims
- 3135US2015056530A1Heat-source cooling deviceKIKAWA SHUNJIRO·Filed 2013·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →