Inventor · disambiguated record
Hiroyuki Hirakawa
Also filed as: HIRAKAWA HIROYUKI
38 granted patents·12 pending applications·120 citations·filing 1984–2025
96Inventor score
Top patents by PatentIndex Score
50 records- 0191US8923723B2Developing device and image forming apparatus comprising sameKYOCERA DOCUMENT SOLUTIONS INC·Filed 2012·Granted Dec 30, 2014·8 cites·9 claims
- 0289US8110971B2Light emitting element, light emitting device, image display device, method of driving light emitting element, and method of producing light emitting elementHIRAKAWA HIROYUKI·Filed 2010·Granted Feb 7, 2012·15 cites·17 claims
- 0385US9184355B2Curable resin composition for reflection of light, and optical semiconductor deviceHIRAKAWA HIROYUKI·Filed 2012·Granted Nov 10, 2015·3 cites·17 claims
- 0484US9056489B2Optical scanning device and image forming apparatus including the sameKYOCERA DOCUMENT SOLUTIONS INC·Filed 2014·Granted Jun 16, 2015·3 cites·8 claims
- 0581US8487521B2Electron emitting element, method for producing electron emitting element, electron emitting device, charging device, image forming apparatus, electron-beam curing device, light emitting device, image display device, air blowing device, and cooling deviceHIRAKAWA HIROYUKI·Filed 2010·Granted Jul 16, 2013·5 cites·23 claims
- 0680US8559852B2Electron emitting device and driving method thereofHIRAKAWA HIROYUKI·Filed 2011·Granted Oct 15, 2013·3 cites·21 claims
- 0777US8164247B2Electron emitting element, electron emitting device, light emitting device, image display device, air blowing device, cooling device, charging device, image forming apparatus, and electron-beam curing deviceHIRAKAWA HIROYUKI·Filed 2010·Granted Apr 24, 2012·4 cites·23 claims
- 0876US7477442B2Display apparatus and method for producing the sameSHARP KK·Filed 2004·Granted Jan 13, 2009·17 cites·24 claims
- 0974US8547007B2Electron emitting element, electron emitting device, light emitting device, image display device, air blowing device, cooling device, charging device, image forming apparatus, electron-beam curing device, and method for producing electron emitting elementNAGAOKA AYAE·Filed 2010·Granted Oct 1, 2013·2 cites·41 claims
- 1074US7825197B2Composition containing cycloaliphatic epoxide, polyol oligomer, curing agent and curing acceleratorDAICEL CHEM·Filed 2005·Granted Nov 2, 2010·5 cites·18 claims
- 1173US8299700B2Electron emitting element having an electron acceleration layer, electron emitting device, light emitting device, image display device, cooling device, and charging deviceIWAMATSU TADASHI·Filed 2010·Granted Oct 30, 2012·4 cites·23 claims
- 1267US2023187736A1Metal-air battery moduleSHARP KK·Filed 2022·Application pending·0 cites
- 1364US8616931B2Electron emitting element, electron emitting device, light emitting device, image display device, air blowing device, cooling device, charging device, image forming apparatus, electron-beam curing device, and method for producing electron emitting elementNAGAOKA AYAE·Filed 2013·Granted Dec 31, 2013·1 cites·7 claims
- 1462US8401430B2Electron emitting element for accelerating and emitting electrons, and use of electron emitting elementKANDA HIROFUMI·Filed 2008·Granted Mar 19, 2013·2 cites·26 claims
- 1560US8741525B2Resin coated carrier, two-component developer, developing device and image forming apparatusWADA OSAMU·Filed 2009·Granted Jun 3, 2014·2 cites·8 claims
- 1660US8063156B2Composition containing cycloaliphatic epoxide, polyol oligomer, and curing catalystTAKAI HIDEYUKI·Filed 2010·Granted Nov 22, 2011·1 cites·10 claims
- 1758US8779059B2Optical semiconductor sealing resin composition and optical semiconductor device using sameSATO ATSUSHI·Filed 2009·Granted Jul 15, 2014·1 cites·8 claims
- 1858US2025249653A1Multi-layered structure and method of manufacturing the sameSHARP KK·Filed 2025·Application pending·0 cites
- 1956US6622000B2Developing apparatus having a charge amount control memberSHARP KK·Filed 2001·Granted Sep 16, 2003·6 cites·12 claims
- 2056US5491397AMotor drive device using one-two phase excitationMURATA MACHINERY LTD·Filed 1993·Granted Feb 13, 1996·17 cites·1 claims
- 2154US6275666B1Developing device and image formation apparatusSHARP KK·Filed 2000·Granted Aug 14, 2001·5 cites·21 claims
- 2253US2022294053A1Metal-air batterySHARP KK·Filed 2022·Application pending·0 cites
- 2352US2021376334A1Metal-air batterySHARP KK·Filed 2021·Application pending·0 cites
- 2451US12119121B2System and method for managing facilitiesASAHI CHEMICAL IND·Filed 2021·Granted Oct 15, 2024·0 cites·21 claims
- 2550US10727021B2Electron emission element, electrification apparatus, and image forming apparatusSHARP KK·Filed 2017·Granted Jul 28, 2020·0 cites·10 claims
- 2649US11485950B2Cell stimulation device, cell culture device, and cell stimulation methodSHARP KK·Filed 2018·Granted Nov 1, 2022·0 cites·10 claims
- 2748US7307379B2Electron emitting element and image forming apparatus employing itSHARP KK·Filed 2004·Granted Dec 11, 2007·3 cites·13 claims
- 2847US2005052687A1Image processing device and communication terminal deviceMURATA MACHINERY LTD·Filed 2004·Application pending·0 cites
- 2945US6873813B2Development method and image formation apparatusSHARP KK·Filed 2003·Granted Mar 29, 2005·2 cites·1 claims
- 3044US8891998B2Image forming apparatus including louvers for directing airflowKYOCERA DOCUMENT SOLUTIONS INC·Filed 2013·Granted Nov 18, 2014·0 cites·5 claims
- 3144US8860293B2Electron emitting element and method for producing the sameHIRAKAWA HIROYUKI·Filed 2011·Granted Oct 14, 2014·0 cites·21 claims
- 3244US8192908B2Carrier, developer, development device, image forming apparatus and image forming methodKAMOTO TAKANORI·Filed 2008·Granted Jun 5, 2012·0 cites·15 claims
- 3344US7515851B2Electron emitter, charger, and charging methodSHARP KK·Filed 2004·Granted Apr 7, 2009·2 cites·5 claims
- 3442US8476818B2Electron emitting element including a fine particle layer containing insulating particles, and devices and methods related theretoHIRAKAWA HIROYUKI·Filed 2010·Granted Jul 2, 2013·0 cites·13 claims
- 3542US8421331B2Electron emitting element and method for producing the sameNAGAOKA AYAE·Filed 2011·Granted Apr 16, 2013·0 cites·22 claims
- 3642US8378565B2Electron emitting element having an electron acceleration layer using fine particle layerSHARP KK·Filed 2010·Granted Feb 19, 2013·0 cites·10 claims
- 3741US4567538AAlternating current limiting apparatusMITSUBISHI ELECTRIC CORP·Filed 1984·Granted Jan 28, 1986·8 cites·6 claims
- 3841US2010135700A1Developer ,developing unit,developing device,and image forming apparatusSHARP KK·Filed 2008·Application pending·0 cites
- 3941US2009047594A1DeveloperSHARP KK·Filed 2008·Application pending·0 cites
- 4041US2010307724A1Heat exchangerICHII YOSHIO·Filed 2009·Application pending·0 cites
- 4140US8928722B2Optical scanning device and image forming apparatus comprising the sameHIRAKAWA HIROYUKI·Filed 2011·Granted Jan 6, 2015·0 cites·15 claims
- 4240US7664438B2Developing device, image forming apparatus and developing methodSHARP KK·Filed 2006·Granted Feb 16, 2010·0 cites·7 claims
- 4340US7317285B2Electron emission device having cleaning functionSHARP KK·Filed 2004·Granted Jan 8, 2008·1 cites·8 claims
- 4438US2010104329A1Magnetic carrier, two component developer, developing device, image forming apparatus, and image forming methodYOSHIOKA NOBUYUKI·Filed 2008·Application pending·0 cites
- 4537US8249487B2Electron emitting element, electron emitting device, charging device, image forming apparatus, electron-beam curing device, light emitting device, image display device, air blowing device, and cooling deviceIMURA YASUO·Filed 2010·Granted Aug 21, 2012·0 cites·24 claims
- 4637US6681091B2Development method and image formation apparatusSHARP KK·Filed 2002·Granted Jan 20, 2004·0 cites·14 claims
- 4737US2007231236A1Method of Producing Halosilane and Method of Purifying Solid FractionKAJIMOTO KIMIHIKO·Filed 2005·Application pending·0 cites
- 4836US8760056B2Electron emitting element, devices utilizing said element, and method for producing said elementHIRATA KANAKO·Filed 2011·Granted Jun 24, 2014·0 cites·22 claims
- 4931US2011236072A1Electron emitting element and method for producing the sameIMURA YASUO·Filed 2011·Application pending·0 cites
- 5029US2010296842A1Electron emitting element, electron emitting device, light emitting device, image display device, air blowing device, cooling device, charging device, image forming apparatus, electron-beam curing device, and method for producing electron emitting elementIMURA YASUO·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →