Inventor · disambiguated record
Naoki Sakurai
Also filed as: SAKURAI NAOKI
37 granted patents·6 pending applications·935 citations·filing 1988–2022
98Inventor score
Top patents by PatentIndex Score
43 records- 0195US6180966B1Trench gate type semiconductor device with current sensing cellHITACHI LTD·Filed 1998·Granted Jan 30, 2001·166 cites·7 claims
- 0295US5412558ASemiconductor integrated circuit unitHITACHI LTD·Filed 1993·Granted May 2, 1995·187 cites·26 claims
- 0391US7973405B2Integrated circuit for driving semiconductor device and power converterHITACHI LTD·Filed 2010·Granted Jul 5, 2011·13 cites·9 claims
- 0487US5093779AComputer file systemHITACHI LTD·Filed 1988·Granted Mar 3, 1992·63 cites·13 claims
- 0586US7802477B2Oral sensation measuring device for foodsUNIV HIROSHIMA·Filed 2005·Granted Sep 28, 2010·10 cites·20 claims
- 0685US5101244ASemiconductor schottky device with pn regionsHITACHI LTD·Filed 1991·Granted Mar 31, 1992·95 cites·25 claims
- 0783US7679944B2Motor driveHITACHI LTD·Filed 2007·Granted Mar 16, 2010·11 cites·12 claims
- 0882US8299836B2Level shift circuit and power conversion unitSAKURAI NAOKI·Filed 2011·Granted Oct 30, 2012·8 cites·9 claims
- 0981US7851866B2Electric power conversion deviceHITACHI LTD·Filed 2006·Granted Dec 14, 2010·11 cites·5 claims
- 1080US6857317B2Device for measuring a food physicality and method for measuring the sameUNIV HIROSHIMA·Filed 2003·Granted Feb 22, 2005·18 cites·16 claims
- 1179US5631494APower semiconductor device with low on-state voltageHITACHI LTD·Filed 1994·Granted May 20, 1997·62 cites·29 claims
- 1274US5343052ALateral insulated gate bipolar transistorHITACHI LTD·Filed 1992·Granted Aug 30, 1994·42 cites·14 claims
- 1373US5253156ASemiconductor integrated circuit unitHITACHI LTD·Filed 1991·Granted Oct 12, 1993·45 cites·5 claims
- 1467US7763974B2Integrated circuit for driving semiconductor device and power converterHITACHI LTD·Filed 2004·Granted Jul 27, 2010·12 cites·13 claims
- 1567US5166760ASemiconductor Schottky barrier device with pn junctionsHITACHI LTD·Filed 1992·Granted Nov 24, 1992·39 cites·4 claims
- 1663US5278443AComposite semiconductor device with Schottky and pn junctionsHITACHI LTD·Filed 1992·Granted Jan 11, 1994·34 cites·4 claims
- 1762US5877518ASemiconductor device and inverter apparatus using the semiconductor deviceHITACHI LTD·Filed 1995·Granted Mar 2, 1999·18 cites·14 claims
- 1862US5274541AParallel circuit module including a diode and an IGBTHITACHI LTD·Filed 1990·Granted Dec 28, 1993·32 cites·1 claims
- 1957US6875798B2Water based ink capable of decolorizing or discoloring and a process for the production of the sameZEBRA CO LTD·Filed 2001·Granted Apr 5, 2005·5 cites·4 claims
- 2056US10566876B2Axial gap rotary electric machineHITACHI LTD·Filed 2016·Granted Feb 18, 2020·0 cites·15 claims
- 2155US7659273B2Composition for accelerating bone fracture healingMITSUBISHI TANABE PHARMA CORP·Filed 2007·Granted Feb 9, 2010·0 cites·21 claims
- 2254US5126806ALateral insulated gate bipolar transistorHITACHI LTD·Filed 1989·Granted Jun 30, 1992·14 cites·23 claims
- 2352US8252794B2Composition for regenerative treatment of cartilage diseaseTAKIGAWA MASAHARU·Filed 2007·Granted Aug 28, 2012·0 cites·20 claims
- 2452US5977606ADielectric isolated high voltage semiconductor deviceHITACHI LTD·Filed 1998·Granted Nov 2, 1999·10 cites·11 claims
- 2551US5463243ADielectric isolated high voltage semiconductor deviceHITACHI LTD·Filed 1993·Granted Oct 31, 1995·10 cites·15 claims
- 2649US2024234359A9Semiconductor Device and Manufacturing Method for Semiconductor DeviceHITACHI ASTEMO LTD·Filed 2022·Application pending·0 cites
- 2748US10804765B2Electromechanical integral motorHITACHI LTD·Filed 2016·Granted Oct 13, 2020·0 cites·7 claims
- 2848US2024258901A1Gate drive circuit and power conversion deviceHITACHI ASTEMO LTD·Filed 2022·Application pending·0 cites
- 2947US2009230938A1Electric Power Conversion ApparatusHITACHI LTD·Filed 2008·Application pending·0 cites
- 3046US10318679B2Calculation method of switching waveform of the inverter and circuit simulation modelHITACHI LTD·Filed 2015·Granted Jun 11, 2019·0 cites·4 claims
- 3145US8399466B2Composition for regenerative treatment of cartilage diseaseTAKIGAWA MASAHARU·Filed 2010·Granted Mar 19, 2013·0 cites·20 claims
- 3245US7070946B2Bone metabolism related protein and gene thereofTANABE SEIYAKU CO·Filed 2002·Granted Jul 4, 2006·0 cites·11 claims
- 3345US5374554AMicroorganism and process for preparing D-biotin using the sameTANABE SEIYAKU CO·Filed 1993·Granted Dec 20, 1994·7 cites·9 claims
- 3444US2004180900A1Therapeutic composition for repairing chondropathyFiled 2002·Application pending·0 cites
- 3543US6144046APower inverter having series connection of semiconductor devices each having an inverse parallel connection of an insulated gate bipolar transistor and a diodeHITACHI LTD·Filed 1997·Granted Nov 7, 2000·10 cites·22 claims
- 3640US5962877AInverter apparatus having improved switching elementHITACHI LTD·Filed 1997·Granted Oct 5, 1999·5 cites·8 claims
- 3739US7957167B2Semiconductor element drive device with level shift circuit and apparatus including the sameHITACHI LTD·Filed 2007·Granted Jun 7, 2011·0 cites·8 claims
- 3839US2004146561A1Compositions for promoting healing of bone fractureSAKURAI NAOKI·Filed 2002·Application pending·0 cites
- 3938US10888941B2Power semiconductor moduleHITACHI POWER SEMICONDUCTOR DEVICE LTD·Filed 2018·Granted Jan 12, 2021·0 cites·13 claims
- 4038US5747829ADielectric isolated high voltage semiconductor deviceHITACHI LTD·Filed 1997·Granted May 5, 1998·4 cites·9 claims
- 4136US2012153719A1Semiconductor Element Control Device and In-Vehicle Electrical SystemINABA MASAMITSU·Filed 2010·Application pending·0 cites
- 4234US5701018ASemiconductor device having parallel connection of an insulated gate bipolar transistor and a diodeHITACHI LTD·Filed 1995·Granted Dec 23, 1997·4 cites·14 claims
- 4332US9594069B2Texture indication measuring method and measuring devicesSAKURAI NAOKI·Filed 2011·Granted Mar 14, 2017·0 cites·16 claims
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