Inventor · disambiguated record
Makoto Kiyama
Also filed as: KIYAMA MAKOTO
51 granted patents·13 pending applications·340 citations·filing 1997–2022
98Inventor score
Top patents by PatentIndex Score
64 records- 0193US7732236B2III nitride semiconductor crystal and manufacturing method thereof, III nitride semiconductor device manufacturing method thereof, and light emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Jun 8, 2010·20 cites·14 claims
- 0292US7998836B1Method for fabricating gallium nitride based semiconductor electronic deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Aug 16, 2011·16 cites·20 claims
- 0392US7884393B2High electron mobility transistor, field-effect transistor, and epitaxial substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Feb 8, 2011·14 cites·4 claims
- 0491US8227810B2Semiconductor device and method for manufacturing sameOKADA MASAYA·Filed 2010·Granted Jul 24, 2012·13 cites·2 claims
- 0591US8110484B1Conductive nitride semiconductor substrate and method for producing the sameSATO FUMITAKA·Filed 2010·Granted Feb 7, 2012·16 cites·17 claims
- 0689US10458043B2Gallium nitride substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Oct 29, 2019·2 cites·6 claims
- 0788US7531889B2Epitaxial substrate and semiconductor elementSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted May 12, 2009·16 cites·28 claims
- 0884US7763892B2Group III nitride semiconductor device and epitaxial substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2006·Granted Jul 27, 2010·12 cites·1 claims
- 0982US6184498B1Apparatus for thermally processing semiconductor waferSUMITOMO ELECTRIC INDUSTRIES·Filed 1999·Granted Feb 6, 2001·44 cites·3 claims
- 1081US7190004B2Light emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Granted Mar 13, 2007·32 cites·162 claims
- 1180US8896058B2Semiconductor device and method for producing sameOKADA MASAYA·Filed 2011·Granted Nov 25, 2014·6 cites·7 claims
- 1278US7749828B2Method of manufacturing group III Nitride TransistorSUMITOMO ELECTRIC INDUSTRIES·Filed 2006·Granted Jul 6, 2010·5 cites·9 claims
- 1376US7687822B2Light emitting apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 2007·Granted Mar 30, 2010·6 cites·2 claims
- 1475US10837124B2Gallium nitride substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Nov 17, 2020·0 cites·5 claims
- 1575US8890239B2Semiconductor device and method for producing the sameYAEGASHI SEIJI·Filed 2011·Granted Nov 18, 2014·6 cites·4 claims
- 1674US8969920B2Vertical GaN-based semiconductor deviceKIYAMA MAKOTO·Filed 2011·Granted Mar 3, 2015·5 cites·8 claims
- 1774US8349078B2Method of forming nitride semiconductor epitaxial layer and method of manufacturing nitride semiconductor deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Jan 8, 2013·3 cites·35 claims
- 1874US7872285B2Vertical gallium nitride semiconductor device and epitaxial substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2006·Granted Jan 18, 2011·6 cites·22 claims
- 1974US5985678AMethod of evaluating and thermally processing semiconductor waferSUMITOMO ELECTRIC INDUSTRIES·Filed 1997·Granted Nov 16, 1999·32 cites·17 claims
- 2072US8362521B2III nitride semiconductor crystal, III nitride semiconductor device, and light emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Jan 29, 2013·2 cites·13 claims
- 2172US6235543B1Method of evaluating a semiconductor waferSUMITOMO ELECTRIC INDUSTRIES·Filed 1999·Granted May 22, 2001·30 cites·1 claims
- 2271US8581359B2Schottky barrier diodeHORII TAKU·Filed 2008·Granted Nov 12, 2013·5 cites·6 claims
- 2371US8502310B2III nitride semiconductor electronic device, method for manufacturing III nitride semiconductor electronic device, and III nitride semiconductor epitaxial waferSHIOMI HIROMU·Filed 2009·Granted Aug 6, 2013·5 cites·20 claims
- 2470US8901698B2Schottky barrier diode and method for manufacturing schottky barrier diodeSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Dec 2, 2014·2 cites·14 claims
- 2570US8729562B2Semiconductor device and method for manufacturing sameOKADA MASAYA·Filed 2010·Granted May 20, 2014·3 cites·4 claims
- 2668US8981428B2Semiconductor device including GaN-based compound semiconductor stacked layer and method for producing the sameSAITOH YU·Filed 2011·Granted Mar 17, 2015·3 cites·14 claims
- 2766US8884306B2Semiconductor device and method for manufacturing the sameKYONO TAKASHI·Filed 2012·Granted Nov 11, 2014·1 cites·2 claims
- 2865US11910714B2Thermoelectric conversion material, thermoelectric conversion element, thermoelectric conversion module and optical sensorSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Granted Feb 20, 2024·0 cites·2 claims
- 2965US9312340B2Group III nitride composite substrate and method for manufacturing the same, laminated group III nitride composite substrate, and group III nitride semiconductor device and method for manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Apr 12, 2016·1 cites·10 claims
- 3065US8941174B2Semiconductor device and method for producing the sameOKADA MASAYA·Filed 2011·Granted Jan 27, 2015·2 cites·4 claims
- 3165US8405125B2Semiconductor device and method for producing the sameOKADA MASAYA·Filed 2010·Granted Mar 26, 2013·2 cites·8 claims
- 3263US8502337B2Schottky barrier diode and method for manufacturing Schottky barrier diodeHORII TAKU·Filed 2009·Granted Aug 6, 2013·2 cites·12 claims
- 3361US6756607B2Method and device for determining backgate characteristicsSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Jun 29, 2004·8 cites·31 claims
- 3459US6127288AMethod of thermally processing semiconductor waferSUMITOMO ELECTRIC INDUSTRIES·Filed 1999·Granted Oct 3, 2000·15 cites·4 claims
- 3558US10443151B2Gallium nitride substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Oct 15, 2019·0 cites·9 claims
- 3656US11139422B2Thermoelectric conversion material, thermoelectric conversion element, thermoelectric conversion module and optical sensorSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Oct 5, 2021·0 cites·18 claims
- 3755US7202509B2Light emitting apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Granted Apr 10, 2007·5 cites·39 claims
- 3853US8815716B2Method of producing semiconductor deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Aug 26, 2014·0 cites·2 claims
- 3953US8476086B2Semiconductor device and method of its manufactureFUJIWARA SHINSUKE·Filed 2007·Granted Jul 2, 2013·0 cites·9 claims
- 4052US11462670B2Thermoelectric conversion material, thermoelectric conversion element and thermoelectric conversion moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2017·Granted Oct 4, 2022·0 cites·15 claims
- 4152US11282997B2Thermoelectric conversion material, thermoelectric conversion element and production method of thermoelectric conversion materialSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Mar 22, 2022·0 cites·16 claims
- 4252US10006147B2Gallium nitride substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Jun 26, 2018·0 cites·9 claims
- 4351US12416097B2Gallium arsenide single crystal substrate and method of manufacturing sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2022·Granted Sep 16, 2025·0 cites·10 claims
- 4451US2013341633A1Semiconductor DeviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Application pending·0 cites
- 4548US8614446B2Semiconductor device and method of producing sameMIYAZAKI TOMIHITO·Filed 2009·Granted Dec 24, 2013·0 cites·3 claims
- 4648US2009108297A1Semi-insulating nitride semiconductor substrate and method of manufacturing the same, nitride semiconductor epitaxial substrate, and field-effect transistorSUMITOMO ELECTRIC INDUSTRIES·Filed 2008·Application pending·0 cites
- 4745US2012126371A1Conductive nitride semiconductor substrate and method for producing the sameSATO FUMITAKA·Filed 2011·Application pending·0 cites
- 4843US2010224952A1Schottky barrier diode and method of producing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2008·Application pending·0 cites
- 4942US7195937B2Method for measuring withstand voltage of semiconductor epitaxial wafer and semiconductor epitaxial waferSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Mar 27, 2007·0 cites·12 claims
- 5041US11611030B2Thermoelectric material element, power generation device, optical sensor, and method for manufacturing thermoelectric materialSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Mar 21, 2023·0 cites·19 claims
Showing the top 50 of 64 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →