Inventor · disambiguated record
Masakazu Yamaguchi
Also filed as: YAMAGUCHI MASAKAZU
48 granted patents·10 pending applications·1,718 citations·filing 1990–2017
99Inventor score
Top patents by PatentIndex Score
58 records- 0197US6844592B2Semiconductor device with super junction regionTOSHIBA KK·Filed 2003·Granted Jan 18, 2005·144 cites·18 claims
- 0296US6693338B2Power semiconductor device having RESURF layerTOSHIBA KK·Filed 2002·Granted Feb 17, 2004·119 cites·26 claims
- 0396US6114727ASemiconductor deviceTOSHIBA KK·Filed 1998·Granted Sep 5, 2000·171 cites·10 claims
- 0495US5554862APower semiconductor deviceTOSHIBA KK·Filed 1994·Granted Sep 10, 1996·135 cites·7 claims
- 0594US8319314B2Semiconductor deviceOGURA TSUNEO·Filed 2011·Granted Nov 27, 2012·19 cites·13 claims
- 0694US7319257B2Power semiconductor deviceTOSHIBA KK·Filed 2007·Granted Jan 15, 2008·22 cites·17 claims
- 0792US5206721ATelevision conference systemFUJITSU LTD·Filed 1990·Granted Apr 27, 1993·182 cites·33 claims
- 0891US7170106B2Power semiconductor deviceTOSHIBA KK·Filed 2005·Granted Jan 30, 2007·15 cites·10 claims
- 0991US6809349B2Power semiconductor deviceTOSHIBA KK·Filed 2003·Granted Oct 26, 2004·43 cites·20 claims
- 1091US6054748AHigh voltage semiconductor power deviceTOSHIBA KK·Filed 1998·Granted Apr 25, 2000·104 cites·5 claims
- 1190US7518197B2Power semiconductor deviceTOSHIBA KK·Filed 2006·Granted Apr 14, 2009·19 cites·28 claims
- 1290US6495871B2Power semiconductor element capable of improving short circuit withstand capability while maintaining low on-voltage and method of fabricating the sameTOSHIBA KK·Filed 2001·Granted Dec 17, 2002·43 cites·7 claims
- 1390US5910738ADriving circuit for driving a semiconductor device at high speed and method of operating the sameTOSHIBA KK·Filed 1996·Granted Jun 8, 1999·70 cites·15 claims
- 1489US7115475B2Method of manufacturing semiconductor deviceTOSHIBA KK·Filed 2004·Granted Oct 3, 2006·37 cites·1 claims
- 1587US7651538B2Hair dye compositionKAO CORP·Filed 2006·Granted Jan 26, 2010·6 cites·13 claims
- 1687US6569412B2Treatment composition for dyed hairKAO CORP·Filed 2001·Granted May 27, 2003·22 cites·11 claims
- 1786US7476261B2Hair dye compositionKAO CORP·Filed 2005·Granted Jan 13, 2009·4 cites·5 claims
- 1886US6670658B2Power semiconductor element capable of improving short circuit withstand capability while maintaining low on-voltage and method of fabricating the sameTOSHIBA KK·Filed 2002·Granted Dec 30, 2003·28 cites·9 claims
- 1985US7772641B2Power semiconductor device with a plurality of gate electrodesTOSHIBA KK·Filed 2007·Granted Aug 10, 2010·15 cites·8 claims
- 2085US7456487B2Semiconductor deviceTOSHIBA KK·Filed 2004·Granted Nov 25, 2008·28 cites·6 claims
- 2185US5464994AInsulated-gate thyristorTOSHIBA KK·Filed 1994·Granted Nov 7, 1995·45 cites·11 claims
- 2285US5381026AInsulated-gate thyristorTOSHIBA KK·Filed 1991·Granted Jan 10, 1995·46 cites·8 claims
- 2384US7078740B2Power semiconductor deviceTOSHIBA KK·Filed 2004·Granted Jul 18, 2006·24 cites·13 claims
- 2483US6995426B2Semiconductor device having vertical metal insulator semiconductor transistors having plural spatially overlapping regions of different conductivity typeTOSHIBA KK·Filed 2002·Granted Feb 7, 2006·27 cites·16 claims
- 2583US5371536AAutomatic control of image pick-up position of objectFUJITSU LTD·Filed 1993·Granted Dec 6, 1994·83 cites·10 claims
- 2682US7238576B2Semiconductor device and method of manufacturing the sameTOSHIBA KK·Filed 2003·Granted Jul 3, 2007·30 cites·23 claims
- 2781US7896932B2Non-oxidative hair dye compositionKAO CORP·Filed 2008·Granted Mar 1, 2011·2 cites·5 claims
- 2880US5130801AImage superimposing apparatus having limited memory requirementFUJITSU LTD·Filed 1990·Granted Jul 14, 1992·51 cites·13 claims
- 2979US6936893B2Power semiconductor deviceTOSHIBA KK·Filed 2003·Granted Aug 30, 2005·27 cites·20 claims
- 3076US10984344B2Document classifying deviceKAO CORP·Filed 2017·Granted Apr 20, 2021·2 cites·9 claims
- 3176US5793065AInsulated-gate thyristorTOSHIBA KK·Filed 1995·Granted Aug 11, 1998·29 cites·10 claims
- 3274US6236069B1Insulated-gate thyristorTOSHIBA KK·Filed 1998·Granted May 22, 2001·26 cites·6 claims
- 3373USRE47198EPower semiconductor deviceTOSHIBA KK·Filed 2015·Granted Jan 8, 2019·1 cites·39 claims
- 3473US6894347B2Power semiconductor element capable of improving short circuit withstand capability while maintaining low on-voltage and method of fabricating the sameTOSHIBA KK·Filed 2003·Granted May 17, 2005·13 cites·12 claims
- 3572US6111454APower supply circuitTOSHIBA KK·Filed 1999·Granted Aug 29, 2000·22 cites·19 claims
- 3671US6921687B2Power semiconductor element capable of improving short circuit withstand capability while maintaining low on-voltage and method of fabricating the sameTOSHIBA KK·Filed 2004·Granted Jul 26, 2005·11 cites·13 claims
- 3770US8484155B2Hair evaluation method and systemYAMAGUCHI MASAKAZU·Filed 2008·Granted Jul 9, 2013·16 cites·6 claims
- 3869US5146002AAroyl ketone derivative, uv ray absorber comprising the same, and cosmetic composition containing the sameKAO CORP·Filed 1990·Granted Sep 8, 1992·11 cites·3 claims
- 3969US2010092415A1Hair frizziness reducing agentKAO CORP·Filed 2008·Application pending·0 cites
- 4060US7896931B2Hair dye compositionKAO CORP·Filed 2008·Granted Mar 1, 2011·0 cites·14 claims
- 4158US2013125915A1Hair frizziness reducing agentKAO CORP·Filed 2013·Application pending·0 cites
- 4257US7361954B2Power semiconductor deviceTOSHIBA KK·Filed 2006·Granted Apr 22, 2008·1 cites·20 claims
- 4357US7075168B2Semiconductor deviceTOSHIBA KK·Filed 2004·Granted Jul 11, 2006·6 cites·16 claims
- 4457US5191121AAroyl ketone derivative, UV ray absorber comprising the same, and cosmetic composition containing the sameKAO CORP·Filed 1991·Granted Mar 2, 1993·6 cites·2 claims
- 4555USRE47641ESemiconductor device with super junction regionTOSHIBA KK·Filed 2016·Granted Oct 8, 2019·0 cites·35 claims
- 4651US2009039386A1Semiconductor DeviceTOSHIBA KK·Filed 2008·Application pending·0 cites
- 4748US7492031B2Semiconductor deviceTOSHIBA KK·Filed 2006·Granted Feb 17, 2009·0 cites·17 claims
- 4846US2012305416A1Dyeing or bleaching kitMIYABE HAJIME·Filed 2011·Application pending·0 cites
- 4943US2006145290A1Semiconductor device having vertical metal insulator semiconductor transistors having plural spatially overlapping regions of different conductivity typeOKUMURA HIDEKI·Filed 2005·Application pending·0 cites
- 5043US2010027244A1Fluorescent lamp, and light emitting device and display device using fluorescent lampWADA HIDEKI·Filed 2008·Application pending·0 cites
Showing the top 50 of 58 patent records by PatentIndex Score.
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