Inventor · disambiguated record
Yoshihisa Fujii
Also filed as: FUJII YOSHIHISA · FURUKAWA YASUYUKI
37 granted patents·10 pending applications·1,028 citations·filing 1974–2025
98Inventor score
Top patents by PatentIndex Score
47 records- 0195US5170231ASilicon carbide field-effect transistor with improved breakdown voltage and low leakage currentSHARP KK·Filed 1991·Granted Dec 8, 1992·134 cites·6 claims
- 0293US8862367B2Control system of internal combustion engineTOYOHARA MASAHIRO·Filed 2011·Granted Oct 14, 2014·13 cites·10 claims
- 0393US5184199ASilicon carbide semiconductor deviceSHARP KK·Filed 1990·Granted Feb 2, 1993·104 cites·7 claims
- 0490US5387804ALight emitting diodeSHARP KK·Filed 1992·Granted Feb 7, 1995·98 cites·3 claims
- 0588US5243204ASilicon carbide light emitting diode and a method for the sameSHARP KK·Filed 1991·Granted Sep 7, 1993·76 cites·12 claims
- 0687US6357224B1Engine exhaust gas purifying apparatusHITACHI LTD·Filed 2000·Granted Mar 19, 2002·36 cites·16 claims
- 0784US5124779ASilicon carbide semiconductor device with ohmic electrode consisting of alloySHARP KK·Filed 1990·Granted Jun 23, 1992·53 cites·4 claims
- 0883US6502388B2Engine exhaust gas cleaning systemHITACHI LTD·Filed 2001·Granted Jan 7, 2003·28 cites·21 claims
- 0981US5279701AMethod for the growth of silicon carbide single crystalsSHARP KK·Filed 1992·Granted Jan 18, 1994·35 cites·8 claims
- 1078US9082866B2Semiconductor storage device and method of manufacturing the sameTOSHIBA KK·Filed 2013·Granted Jul 14, 2015·5 cites·12 claims
- 1178US5063421ASilicon carbide light emitting diode having a pn junctionSHARP KK·Filed 1989·Granted Nov 5, 1991·34 cites·3 claims
- 1278US3937448AApparatus for hardening steel pipesSUMITOMO METAL IND·Filed 1974·Granted Feb 10, 1976·17 cites·4 claims
- 1377US5230768AMethod for the production of SiC single crystals by using a specific substrate crystal orientationSHARP KK·Filed 1992·Granted Jul 27, 1993·41 cites·5 claims
- 1476US5319220ASilicon carbide semiconductor deviceSHARP KK·Filed 1992·Granted Jun 7, 1994·40 cites·2 claims
- 1576US5313078AMulti-layer silicon carbide light emitting diode having a PN junctionSHARP KK·Filed 1992·Granted May 17, 1994·39 cites·22 claims
- 1675US5135885AMethod of manufacturing silicon carbide fetsSHARP KK·Filed 1990·Granted Aug 4, 1992·38 cites·12 claims
- 1772US6383267B1Exhaust gas cleaning system for an engineHITACHI LTD·Filed 2000·Granted May 7, 2002·29 cites·14 claims
- 1872US4217548AFlaw detector for pipe employing magnets located outside the pipe and detector mounted inside and movable along the pipe with the magnetsSUMITOMO METAL IND·Filed 1978·Granted Aug 12, 1980·24 cites·5 claims
- 1970US9422884B2Internal combustion engine control system with injector valve timing controlHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2012·Granted Aug 23, 2016·2 cites·5 claims
- 2069US10393051B2Internal-combustion-engine fuel injection control deviceHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2014·Granted Aug 27, 2019·2 cites·10 claims
- 2166US6771586B2Semiconductor laser element, method for manufacturing the same, and optical pickup using the sameSHARP KK·Filed 2002·Granted Aug 3, 2004·12 cites·6 claims
- 2266US5216264ASilicon carbide MOS type field-effect transistor with at least one of the source and drain regions is formed by the use of a schottky contactSHARP KK·Filed 1991·Granted Jun 1, 1993·25 cites·8 claims
- 2365US5030580AMethod for producing a silicon carbide semiconductor deviceSHARP KK·Filed 1990·Granted Jul 9, 1991·36 cites·6 claims
- 2465US4865659AHeteroepitaxial growth of SiC on SiSHARP KK·Filed 1987·Granted Sep 12, 1989·23 cites·7 claims
- 2564US5329141ALight emitting diodeSHARP KK·Filed 1992·Granted Jul 12, 1994·24 cites·14 claims
- 2663US7603297B2Inventory management method, system and programTDK CORP·Filed 2003·Granted Oct 13, 2009·2 cites·18 claims
- 2762US11542885B2Load drive circuit and load drive systemHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2019·Granted Jan 3, 2023·0 cites·14 claims
- 2862US6618415B1Semiconductor laser device and fabricating method thereofSHARP KK·Filed 2000·Granted Sep 9, 2003·6 cites·2 claims
- 2962US2025390644A1System and method for building an electric vehicle charging networkWALMART APOLLO LLC·Filed 2025·Application pending·0 cites
- 3060US5049950AMIS structure photosensorSHARP KK·Filed 1990·Granted Sep 17, 1991·23 cites·6 claims
- 3158US4258318AFlaw detector for pipe employing magnets located outside the pipe and detector mounted inside and movable along the pipe with the magnetsSUMITOMO METAL IND·Filed 1978·Granted Mar 24, 1981·15 cites·2 claims
- 3257US2020238223A1Nanofiltration or reverse osmosis membrane made of hard carbon film, filtering filter, two-layer-bonded-type filtering filter, and methods for manufacturing sameNAT INST MATERIALS SCIENCE·Filed 2020·Application pending·0 cites
- 3356US6940884B2Semiconductor laser device and fabricating method thereofSHARP KK·Filed 2003·Granted Sep 6, 2005·4 cites·3 claims
- 3456US2011224337A1Process for preparing an n-alkyllactam with improved color qualityBASF SE·Filed 2009·Application pending·0 cites
- 3553US2017001153A1Nanofiltration or reverse osmosis membrane made of hard carbon film, filtering filter, two-layer-bonded-type filtering filter, and methods for manufacturing sameNAT INST FOR MATERIALS SCIENCE·Filed 2014·Application pending·0 cites
- 3648US10910815B2Electronic control unitHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2018·Granted Feb 2, 2021·0 cites·11 claims
- 3744US2016003182A1Control Device for Internal Combustion EngineHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2014·Application pending·0 cites
- 3843US9382891B2Engine control apparatusFUJII YOSHIHISA·Filed 2012·Granted Jul 5, 2016·0 cites·4 claims
- 3942US4056412AMethod for hardening steel pipesSUMITOMO METAL IND·Filed 1975·Granted Nov 1, 1977·4 cites·3 claims
- 4042US2002184877A1Engine exhaust purifying apparatusHITACHI LTD·Filed 2002·Application pending·0 cites
- 4142US2015060971A1Nonvolatile semiconductor memory device and method of manufacturing the sameTOSHIBA KK·Filed 2013·Application pending·0 cites
- 4235US8865856B2Toner resins for electronic copying purposesFUJII YOSHIHISA·Filed 2010·Granted Oct 21, 2014·0 cites·20 claims
- 4335US5872020AMethod for producing semiconductor laser deviceSHARP KK·Filed 1996·Granted Feb 16, 1999·4 cites·6 claims
- 4435US2002029562A1Engine exhaust purifying apparatusHITACHI LTD·Filed 2001·Application pending·0 cites
- 4534US2013280499A1Fountain solution and fountain solution concentratesKANNO HIROYASU·Filed 2011·Application pending·0 cites
- 4633US2013211641A1Hybrid vehicleFUJII YOSHIHISA·Filed 2011·Application pending·0 cites
- 4732US6176968B1Method and apparatus for producing semiconductor laser deviceSHARP KK·Filed 1998·Granted Jan 23, 2001·2 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →