Inventor · disambiguated record
Kazutoshi Higashiyama
Also filed as: HIGASHIYAMA KAZUTOSHI
22 granted patents·7 pending applications·318 citations·filing 1987–2021
95Inventor score
Top patents by PatentIndex Score
29 records- 0195US6670065B2Solid polymer electrolyte, a membrane using thereof, a solution for coating electrode catalyst, a membrane/electrode assembly, and a fuel cellHITACHI LTD·Filed 2001·Granted Dec 30, 2003·47 cites·12 claims
- 0284US6777248B1Dielectric element and manufacturing method thereforHITACHI LTD·Filed 1997·Granted Aug 17, 2004·70 cites·7 claims
- 0383US5276012ALaser-assisted CVD process forming oxide superconducting filmsNGK SPARK PLUG CO·Filed 1992·Granted Jan 4, 1994·43 cites·11 claims
- 0480US7560185B2Solid polymer electrolyte, a membrane using thereof, a solution for coating electrode catalyst, a membrane/electrode assembly, and a fuel cellHITACHI LTD·Filed 2005·Granted Jul 14, 2009·2 cites·7 claims
- 0576US7553574B2Solid polymer electrolyte, a membrane using thereof, a solution for coating electrode catalyst, a membrane/electrode assembly, and a fuel cellHITACHI LTD·Filed 2005·Granted Jun 30, 2009·1 cites·2 claims
- 0676US6890673B2Hydrogen producing apparatus and power generating system using itBABCOCK HITACHI KK·Filed 2002·Granted May 10, 2005·16 cites·13 claims
- 0775US5190913AApparatus for producing superconducting oxide filmHITACHI LTD·Filed 1992·Granted Mar 2, 1993·37 cites·3 claims
- 0874US9522391B2Co-selective methanation catalystUNIV YAMANASHI·Filed 2013·Granted Dec 20, 2016·2 cites·20 claims
- 0973US6893764B2Solid polyelectrolyte, assembly of membrane and electrodes, and fuel cellHITACHI LTD·Filed 2002·Granted May 17, 2005·11 cites·10 claims
- 1073US6316391B1Oxide superconducting wire and method of manufacturing the sameHITACHI LTD·Filed 2000·Granted Nov 13, 2001·15 cites·25 claims
- 1170US9005552B2Selective CO methanation catalyst, method of producing the same, and apparatus using the sameWATANABE MASAHIRO·Filed 2011·Granted Apr 14, 2015·1 cites·9 claims
- 1268US4741279AMethod of and apparatus for combusting coal-water mixtureHITACHI LTD·Filed 1987·Granted May 3, 1988·26 cites·13 claims
- 1359US12494492B2Supported metal catalyst, method for producing same, and method for producing carrierUNIV YAMANASHI·Filed 2021·Granted Dec 9, 2025·0 cites·18 claims
- 1459US6964823B2Solid polymer electrolyte, a membrane using thereof, a solution for coating electrode catalyst, a membrane/electrode assembly, and a fuel cellHITACHI LTD·Filed 2003·Granted Nov 15, 2005·2 cites·17 claims
- 1555US6548342B1Method of producing oxide dielectric element, and memory and semiconductor device using the elementHITACHI LTD·Filed 1997·Granted Apr 15, 2003·19 cites·11 claims
- 1654US7071053B2Method of forming capacitor with ruthenium top and bottom electrodes by MOCVDHITACHI LTD·Filed 2004·Granted Jul 4, 2006·1 cites·6 claims
- 1751US7541107B2Solid polyelectrolyte, assembly of membrane and electrodes, amd fuel cellHITACHI LTD·Filed 2004·Granted Jun 2, 2009·0 cites·18 claims
- 1851US2008193819A1Fuel cell using the catalyst of metal clustersYOSHII YASUO·Filed 2008·Application pending·0 cites
- 1949US6917065B2Ferroelectric capacitor and semiconductor deviceRENESAS TECH CORP·Filed 2003·Granted Jul 12, 2005·3 cites·17 claims
- 2044US2004180247A1Hydrogen producing apparatus and power generating system using itFiled 2004·Application pending·0 cites
- 2143US5508256AOxide high-temperature superconducting material, method of preparing same and superconducting wiresHITACHI LTD·Filed 1994·Granted Apr 16, 1996·9 cites·10 claims
- 2243US2013071318A1Fuel reformer, selective co methanation method, selective co methanation catalyst, and process for producing the sameUNIV YAMANASHI·Filed 2012·Application pending·0 cites
- 2341US2007144143A1Exhaust gas purification apparatus, exhaust gas purification method, and sulfur component trapping agent for internal combustion engineBABCOCK HITACHI KK·Filed 2004·Application pending·0 cites
- 2440US6821845B1Semiconductor device and method for manufacturing the sameHITACHI LTD·Filed 1999·Granted Nov 23, 2004·6 cites·8 claims
- 2537US2003030967A1Dielectric capacitor and production process and semiconductor deviceFiled 2002·Application pending·0 cites
- 2637US2003001189A1Ferroelectric capacitor and semiconductor deviceFiled 2002·Application pending·0 cites
- 2736US5252315AProcess for producing lithium aluminate powder having large specific surface areaHITACHI LTD·Filed 1989·Granted Oct 12, 1993·4 cites·9 claims
- 2833US5545610AOxide-based superconductor, a process for preparing the same and a wire material of comprising the sameHITACHI LTD·Filed 1993·Granted Aug 13, 1996·3 cites·5 claims
- 2929US2006107649A1Apparatus and method for clarifying exhaust gas of diesel engineKAMIKAWA MASAYUKI·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →