Inventor · disambiguated record
Hiromitsu Sakai
Also filed as: SAKAI HIROMITSU
43 granted patents·5 pending applications·573 citations·filing 1980–2012
98Inventor score
Top patents by PatentIndex Score
48 records- 0196US7205676B2Wind turbine generator systemHITACHI LTD·Filed 2006·Granted Apr 17, 2007·36 cites·2 claims
- 0295US7692323B2Wind turbine generator systemHITACHI LTD·Filed 2008·Granted Apr 6, 2010·18 cites·2 claims
- 0394US7847427B2Wind turbine generator systemHITACHI LTD·Filed 2009·Granted Dec 7, 2010·13 cites·2 claims
- 0493US8421107B2Group-III nitride semiconductor light emitting device and production method thereof, and lampSHINOHARA HIRONAO·Filed 2009·Granted Apr 16, 2013·25 cites·22 claims
- 0593US8076790B2Wind turbine generator systemICHINOSE MASAYA·Filed 2011·Granted Dec 13, 2011·9 cites·18 claims
- 0693US7964980B2Wind turbine generator systemHITACHI LTD·Filed 2010·Granted Jun 21, 2011·10 cites·2 claims
- 0793US7692325B2Wind power generation systemHITACHI LTD·Filed 2009·Granted Apr 6, 2010·27 cites·11 claims
- 0893US7095130B2Wind turbine generator systemHITACHI LTD·Filed 2004·Granted Aug 22, 2006·37 cites·15 claims
- 0992US8097971B2Wind turbine generator systemICHINOSE MASAYA·Filed 2009·Granted Jan 17, 2012·27 cites·16 claims
- 1092US7355296B2Wind turbine generator systemHITACHI LTD·Filed 2007·Granted Apr 8, 2008·19 cites·10 claims
- 1189US8309982B2Group-III nitride semiconductor light-emitting device, method for manufacturing the same, and lampHANAWA KENZO·Filed 2009·Granted Nov 13, 2012·14 cites·8 claims
- 1289US6380796B2Semiconductor power converting apparatusHITACHI LTD·Filed 2001·Granted Apr 30, 2002·60 cites·5 claims
- 1388US7952214B2Wind power generation system and method of controlling power converterHITACHI LTD·Filed 2008·Granted May 31, 2011·19 cites·18 claims
- 1486US8299642B2Wind power generation systemICHINOSE MASAYA·Filed 2010·Granted Oct 30, 2012·7 cites·14 claims
- 1585US8492186B2Method for producing group III nitride semiconductor layer, group III nitride semiconductor light-emitting device, and lampSHINOHARA HIRONAO·Filed 2007·Granted Jul 23, 2013·10 cites·2 claims
- 1681US4484936ADegassing assemblyUEMURA KOGYO KK·Filed 1982·Granted Nov 27, 1984·40 cites·3 claims
- 1779US8896085B2Semiconductor light-emitting element manufacturing method, lamp, electronic equipment, and mechanical apparatusSAKAI HIROMITSU·Filed 2010·Granted Nov 25, 2014·3 cites·7 claims
- 1878US8859313B2Method for manufacturing semiconductor light emitting element, semiconductor light emitting element, lamp, electronic device and mechanical apparatusSAKAI HIROMITSU·Filed 2011·Granted Oct 14, 2014·4 cites·16 claims
- 1974US7514707B2Group III nitride semiconductor light-emitting deviceSHOWA DENKO KK·Filed 2005·Granted Apr 7, 2009·5 cites·9 claims
- 2074US4353933AMethod for controlling electroless plating bathUEMURA KOGYO KK·Filed 1980·Granted Oct 12, 1982·24 cites·5 claims
- 2173US4350717AControlling electroless plating bathUEMURA KOGYO KK·Filed 1980·Granted Sep 21, 1982·22 cites·16 claims
- 2269US8785227B2Method of manufacturing semiconductor light emitting element including re-growth layer for reducing warpageSAKAI HIROMITSU·Filed 2011·Granted Jul 22, 2014·2 cites·10 claims
- 2369US6490182B2Power conversion apparatusHITACHI LTD·Filed 2001·Granted Dec 3, 2002·23 cites·22 claims
- 2467US8049227B2Group III nitride semiconductor light emitting device, method for producing the same, and lamp thereofSHOWA DENKO KK·Filed 2007·Granted Nov 1, 2011·2 cites·19 claims
- 2566US8772060B2Method for manufacturing group III nitride semiconductor light emitting element, group III nitride semiconductor light emitting element and lampSAKAI HIROMITSU·Filed 2009·Granted Jul 8, 2014·2 cites·13 claims
- 2666US8148712B2Group III nitride compound semiconductor stacked structureMIKI HISAYUKI·Filed 2007·Granted Apr 3, 2012·2 cites·27 claims
- 2766US8134168B2Group-III nitride semiconductor deviceSAKAI HIROMITSU·Filed 2004·Granted Mar 13, 2012·11 cites·14 claims
- 2864US8129851B2Wind power generation system and control method thereofICHINOSE MASAYA·Filed 2008·Granted Mar 6, 2012·7 cites·22 claims
- 2964US7951617B2Group III nitride semiconductor stacked structure and production method thereofSHOWA DENKO KK·Filed 2006·Granted May 31, 2011·2 cites·5 claims
- 3064US6703874B2Gate driver for MOS control semiconductor devicesHITACHI LTD·Filed 2003·Granted Mar 9, 2004·8 cites·8 claims
- 3163US7855386B2N-type group III nitride semiconductor layered structureSHOWA DENKO KK·Filed 2005·Granted Dec 21, 2010·2 cites·32 claims
- 3261US8867247B2DC/AC power converter with DC side double frequency pulsation suppression caused by AC side faultsBANDO AKIRA·Filed 2012·Granted Oct 21, 2014·2 cites·3 claims
- 3359US8754441B2Semiconductor light-emitting device with a concavo-convex part formed on a P-type semiconductor layer and method for manufacturing semiconductor light-emitting deviceSHINOHARA HIRONAO·Filed 2009·Granted Jun 17, 2014·1 cites·6 claims
- 3455US6809561B2Semiconductor power converting apparatusHITACHI LTD·Filed 2003·Granted Oct 26, 2004·8 cites·15 claims
- 3555US6242968B1Semiconductor power converting apparatusHITACHI LTD·Filed 2000·Granted Jun 5, 2001·6 cites·14 claims
- 3652US2012049521A1Wind turbine generator systemICHINOSE MASAYA·Filed 2011·Application pending·0 cites
- 3751US5484563AInjection molding process using a resin reservoir containing a retractable pistonPOLYPLASTICS CO·Filed 1995·Granted Jan 16, 1996·14 cites·6 claims
- 3849US6727516B2Semiconductor power conversion apparatusHITACHI LTD·Filed 2002·Granted Apr 27, 2004·3 cites·16 claims
- 3949US5439424ACVT control systemNISSAN MOTOR·Filed 1994·Granted Aug 8, 1995·12 cites·22 claims
- 4049US4406248AApparatus for controlling electroless plating bathUEMURA KOGYO KK·Filed 1982·Granted Sep 27, 1983·9 cites·4 claims
- 4148US5420559ACoil bobbinsPOLYPLASTICS CO·Filed 1993·Granted May 30, 1995·13 cites·12 claims
- 4247US4406250AApparatus for controlling electroless plating bathUEMURA KOGYO KK·Filed 1982·Granted Sep 27, 1983·9 cites·10 claims
- 4346US2010213476A1Group-iii nitride compound semiconductor light-emitting device, method of manufacturing group-iii nitride compound semiconductor light-emitting device, and lampSHOWA DENKO KK·Filed 2007·Application pending·0 cites
- 4446US2007284599A1Process for producing group III nitride semiconductor stacked structureSHOWA DENKO KK·Filed 2007·Application pending·0 cites
- 4546US2009194784A1Group-iii nitride compound semiconductor device and production method thereof, group-iii nitride compound semiconductor light-emitting device and production method thereof, and lampSHOWA DENKO KK·Filed 2008·Application pending·0 cites
- 4639US6717177B2Semiconductor power conversion apparatusHITACHI LTD·Filed 2003·Granted Apr 6, 2004·0 cites·12 claims
- 4739US4406249AApparatus for controlling electroless plating bathUEMURA KOGYO KK·Filed 1982·Granted Sep 27, 1983·6 cites·4 claims
- 4835US2003042939A1Semiconductor power converting apparatusFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →