Inventor · disambiguated record
Akio Nakagawa
Also filed as: NAKAGAWA AKIO
167 granted patents·12 pending applications·5,036 citations·filing 1979–2019
99Inventor score
Top patents by PatentIndex Score
179 records- 0197US6064086ASemiconductor device having lateral IGBTTOSHIBA KK·Filed 1998·Granted May 16, 2000·205 cites·22 claims
- 0297US5731603ALateral IGBTTOSHIBA KK·Filed 1996·Granted Mar 24, 1998·191 cites·14 claims
- 0397US5105243AConductivity-modulation metal oxide field effect transistor with single gate structureTOSHIBA KK·Filed 1989·Granted Apr 14, 1992·165 cites·12 claims
- 0496US4672407AConductivity modulated MOSFETTOSHIBA KK·Filed 1985·Granted Jun 9, 1987·83 cites·18 claims
- 0594US7230297B2Trench-gated MOSFET including schottky diode thereinTOSHIBA KK·Filed 2005·Granted Jun 12, 2007·28 cites·22 claims
- 0694US6297534B1Power semiconductor deviceTOSHIBA KK·Filed 1999·Granted Oct 2, 2001·122 cites·30 claims
- 0793US6211549B1High breakdown voltage semiconductor device including first and second semiconductor elementsTOSHIBA KK·Filed 1998·Granted Apr 3, 2001·117 cites·6 claims
- 0893US5162876ASemiconductor device having high breakdown voltageTOSHIBA KK·Filed 1991·Granted Nov 10, 1992·122 cites·19 claims
- 0993US4928155ALateral conductivity modulated MOSFETTOSHIBA KK·Filed 1988·Granted May 22, 1990·54 cites·6 claims
- 1092US6614089B2Field effect transistorTOSHIBA KK·Filed 2001·Granted Sep 2, 2003·64 cites·9 claims
- 1192US6614077B2Semiconductor device improved in ESD reliabilityTOSHIBA KK·Filed 2001·Granted Sep 2, 2003·65 cites·23 claims
- 1292US5448083AInsulated-gate semiconductor deviceTOSHIBA KK·Filed 1994·Granted Sep 5, 1995·75 cites·36 claims
- 1392US5241210AHigh breakdown voltage semiconductor deviceTOSHIBA KK·Filed 1991·Granted Aug 31, 1993·123 cites·14 claims
- 1491US6452231B1Semiconductor deviceTOSHIBA KK·Filed 1998·Granted Sep 17, 2002·94 cites·9 claims
- 1591US5932897AHigh-breakdown-voltage semiconductor deviceTOSHIBA KK·Filed 1998·Granted Aug 3, 1999·84 cites·18 claims
- 1690US5548150AField effect transistorTOSHIBA KK·Filed 1995·Granted Aug 20, 1996·91 cites·20 claims
- 1790US4878957ADielectrically isolated semiconductor substrateTOSHIBA KK·Filed 1989·Granted Nov 7, 1989·90 cites·5 claims
- 1890US4680604AConductivity modulated MOS transistor deviceTOSHIBA KK·Filed 1986·Granted Jul 14, 1987·58 cites·5 claims
- 1989US7893744B2Semiconductor deviceTOSHIBA KK·Filed 2009·Granted Feb 22, 2011·13 cites·3 claims
- 2089US5689121AInsulated-gate semiconductor deviceTOSHIBA KK·Filed 1995·Granted Nov 18, 1997·61 cites·19 claims
- 2189US4760431AGate turn-off thyristor with independent turn-on/off controlling transistorsTOSHIBA KK·Filed 1986·Granted Jul 26, 1988·53 cites·4 claims
- 2288US8049270B2Semiconductor deviceTOSHIBA KK·Filed 2007·Granted Nov 1, 2011·16 cites·15 claims
- 2388US5838026AInsulated-gate semiconductor deviceTOSHIBA KK·Filed 1997·Granted Nov 17, 1998·58 cites·5 claims
- 2488US5068700ALateral conductivity modulated mosfetTOSHIBA KK·Filed 1990·Granted Nov 26, 1991·80 cites·21 claims
- 2587US6879005B2High withstand voltage semiconductor deviceTOSHIBA KK·Filed 2004·Granted Apr 12, 2005·43 cites·12 claims
- 2687US6380566B1Semiconductor device having FET structure with high breakdown voltageTOSHIBA KK·Filed 2000·Granted Apr 30, 2002·44 cites·20 claims
- 2787US6133607ASemiconductor deviceTOSHIBA KK·Filed 1998·Granted Oct 17, 2000·70 cites·9 claims
- 2887US5585651AInsulated-gate semiconductor device having high breakdown voltagesTOSHIBA KK·Filed 1995·Granted Dec 17, 1996·56 cites·30 claims
- 2987US4782372ALateral conductivity modulated MOSFETTOSHIBA KK·Filed 1987·Granted Nov 1, 1988·33 cites·4 claims
- 3086US7564097B2Trench-gated MOSFET including schottky diode thereinTOSHIBA KK·Filed 2007·Granted Jul 21, 2009·10 cites·6 claims
- 3186US6049109ASilicon on Insulator semiconductor device with increased withstand voltageTOSHIBA KK·Filed 1995·Granted Apr 11, 2000·64 cites·30 claims
- 3286US5985708AMethod of manufacturing vertical power deviceTOSHIBA KK·Filed 1997·Granted Nov 16, 1999·73 cites·6 claims
- 3385US7514783B2Semiconductor moduleTOSHIBA KK·Filed 2005·Granted Apr 7, 2009·15 cites·13 claims
- 3485US6838730B1Semiconductor deviceTOSHIBA KK·Filed 2004·Granted Jan 4, 2005·36 cites·10 claims
- 3585US6683343B2High voltage semiconductor device having two buffer layerTOSHIBA KK·Filed 2002·Granted Jan 27, 2004·36 cites·10 claims
- 3685US5464994AInsulated-gate thyristorTOSHIBA KK·Filed 1994·Granted Nov 7, 1995·45 cites·11 claims
- 3785US5381026AInsulated-gate thyristorTOSHIBA KK·Filed 1991·Granted Jan 10, 1995·46 cites·8 claims
- 3885US4719531AOvercurrent protective circuit for modulated-conductivity type MOSFETTOSHIBA KK·Filed 1986·Granted Jan 12, 1988·36 cites·14 claims
- 3984US4567502APlanar type semiconductor device with a high breakdown voltageTOKYO SHIBAURA ELECTRIC CO·Filed 1984·Granted Jan 28, 1986·46 cites·2 claims
- 4083US10707300B2Semiconductor deviceFUJI ELECTRIC CO LTD·Filed 2019·Granted Jul 7, 2020·3 cites·19 claims
- 4183US7973580B2Semiconductor deviceTOSHIBA KK·Filed 2011·Granted Jul 5, 2011·4 cites·5 claims
- 4283US7557545B2Electric power unit operating in continuous and discontinuous conduction modes and control method thereforTOSHIBA KK·Filed 2006·Granted Jul 7, 2009·19 cites·12 claims
- 4383US6118149ATrench gate MOSFETTOSHIBA KK·Filed 1998·Granted Sep 12, 2000·55 cites·8 claims
- 4483US4980743AConductivity-modulation metal oxide semiconductor field effect transistorTOSHIBA KK·Filed 1988·Granted Dec 25, 1990·42 cites·5 claims
- 4583US4959703ATurn-on/off driving technique for insulated gate thyristorTOSHIBA KK·Filed 1989·Granted Sep 25, 1990·33 cites·12 claims
- 4682US7061047B2Semiconductor device having trench gate structure and manufacturing method thereofTOSHIBA KK·Filed 2003·Granted Jun 13, 2006·26 cites·56 claims
- 4782US6720618B2Power MOSFET deviceTOSHIBA KK·Filed 2002·Granted Apr 13, 2004·24 cites·14 claims
- 4882US6605844B2Semiconductor deviceTOSHIBA KK·Filed 2001·Granted Aug 12, 2003·31 cites·5 claims
- 4982US5086332APlanar semiconductor device having high breakdown voltageTOSHIBA KK·Filed 1989·Granted Feb 4, 1992·60 cites·4 claims
- 5081US8707132B2Information processing apparatus, information processing method, and storage mediumNAKAGAWA AKIO·Filed 2011·Granted Apr 22, 2014·5 cites·12 claims
Showing the top 50 of 179 patent records by PatentIndex Score.
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