Inventor · disambiguated record
Akihiko Okamoto
Also filed as: OKAMOTO AKIHIKO
35 granted patents·3 pending applications·861 citations·filing 1985–2021
98Inventor score
Top patents by PatentIndex Score
38 records- 0196US6329035B1Optical data storage medium capable of reversibly displaying informationRICOH KK·Filed 1999·Granted Dec 11, 2001·119 cites·31 claims
- 0292US5850120AElectron gun with a gamma correct field emission cathodeNEC CORP·Filed 1996·Granted Dec 15, 1998·77 cites·24 claims
- 0389US5877594AElectron beam apparatus having an electron lens and a structure for compensating for a spherical aberration of the electron lensNEC CORP·Filed 1997·Granted Mar 2, 1999·70 cites·18 claims
- 0489US4764917AAuto loading disk playerPIONEER ELECTRONIC CORP·Filed 1986·Granted Aug 16, 1988·42 cites·2 claims
- 0588US5351228AOptical disk drive unitRICOH KK·Filed 1992·Granted Sep 27, 1994·43 cites·21 claims
- 0686US7161285B2CNT film and field-emission cold cathode comprising the sameNEC CORP·Filed 2001·Granted Jan 9, 2007·26 cites·30 claims
- 0786US6780075B2Method of fabricating nano-tube, method of manufacturing field-emission type cold cathode, and method of manufacturing display deviceNEC CORP·Filed 2000·Granted Aug 24, 2004·34 cites·4 claims
- 0886US6660452B2Optical information memory medium and display recording method using the sameRICOH KK·Filed 2002·Granted Dec 9, 2003·21 cites·75 claims
- 0986US6153978AField emission cold cathode device and method for driving the sameNEC CORP·Filed 1999·Granted Nov 28, 2000·50 cites·17 claims
- 1086US5070494AOptical pickup device with dual-mode drive mechanismRICOH KK·Filed 1989·Granted Dec 3, 1991·38 cites·8 claims
- 1183US8479859B1Energy regeneration device for either hybrid vehicle or electric automobileOKAMOTO AKIHIKO·Filed 2011·Granted Jul 9, 2013·13 cites·1 claims
- 1283US6040973AMethod of driving a field emission cold cathode device and a field emission cold cathode electron gunNEC CORPORAITON·Filed 1998·Granted Mar 21, 2000·68 cites·9 claims
- 1380US7717517B2Headrest for vehiclesBIZEN HATSUJOH CO LTD·Filed 2008·Granted May 18, 2010·20 cites·7 claims
- 1478US5912870ADisk drive unit having improved shutter mechanismRICOH KK·Filed 1997·Granted Jun 15, 1999·27 cites·5 claims
- 1576US4695996AAutomatic loading disc playerPIONEER ELECTRONIC CORP·Filed 1985·Granted Sep 22, 1987·22 cites·7 claims
- 1674US6198712B1Disk apparatus including an inner cover and an outer cover with latching portionsRICOH KK·Filed 1997·Granted Mar 6, 2001·22 cites·10 claims
- 1771US5787063ADisk drive unit having improved shutter mechanismRICOH KK·Filed 1995·Granted Jul 28, 1998·21 cites·16 claims
- 1870US6137760AInformation recording and reproducing apparatusRICOH KK·Filed 1999·Granted Oct 24, 2000·18 cites·9 claims
- 1970US5977696AField emission electron gun capable of minimizing nonuniform influence of surrounding electric potential condition on electrons emitted from emittersNEC CORP·Filed 1997·Granted Nov 2, 1999·22 cites·15 claims
- 2067US5301179AOptical disk drive unit with a sealing type bearing memberRICOH KK·Filed 1992·Granted Apr 5, 1994·17 cites·11 claims
- 2166US6404113B1Field emission type cold cathode element, method of fabricating the same, and display deviceNEC CORP·Filed 2000·Granted Jun 11, 2002·6 cites·19 claims
- 2265US7578559B2Retractable vehicle headrestBIZEN HATSUJOH CO LTD·Filed 2008·Granted Aug 25, 2009·9 cites·8 claims
- 2361US12492457B2Precipitation hardening martensitic stainless steelDAIDO STEEL CO LTD·Filed 2021·Granted Dec 9, 2025·0 cites·12 claims
- 2460US4700338AAutomatic loading disc playerPIONEER ELECTRONIC CORP·Filed 1985·Granted Oct 13, 1987·12 cites·8 claims
- 2557US5557160AField emission cathode including cylindrically shaped resistive connector and method of manufacturingNEC CORP·Filed 1994·Granted Sep 17, 1996·12 cites·1 claims
- 2656US7359578B2Information processing apparatus, and program, computer readable medium, and method for searching for image dataRICOH KK·Filed 2004·Granted Apr 15, 2008·2 cites·16 claims
- 2756US6967913B2Information processing method for achieving optimization of recording velocityRICOH KK·Filed 2002·Granted Nov 22, 2005·3 cites·17 claims
- 2853US6404138B1Cold cathode display device and driving methodNEC CORP·Filed 2000·Granted Jun 11, 2002·2 cites·35 claims
- 2949US4948751AMoelcular beam epitaxy for selective epitaxial growth of III - V compound semiconductorNEC CORP·Filed 1988·Granted Aug 14, 1990·16 cites·21 claims
- 3046US5786657AField emission electron gun capable of minimizing nonuniform influence of surrounding electric potential condition on electrons emitted from emittersNEC CORP·Filed 1997·Granted Jul 28, 1998·7 cites·11 claims
- 3144US6307309B1Field emission cold cathode device and manufacturing method thereofNEC CORP·Filed 1999·Granted Oct 23, 2001·6 cites·6 claims
- 3244US2005270928A1Optical disc deviceSUGAHARA HIROKI·Filed 2005·Application pending·0 cites
- 3343USRE37093EOptical disk drive unit with a sealing type bearing memberRICOH KK·Filed 1997·Granted Mar 13, 2001·6 cites·21 claims
- 3443US6060823AField emission cold cathode elementNEC CORP·Filed 1998·Granted May 9, 2000·6 cites·12 claims
- 3543US2009295212A1Armrest apparatusBIZEN HATSUJOH CO LTD·Filed 2009·Application pending·0 cites
- 3640US6898797B1Optical disc cartridge which protects a disc therein from ambient lightRICOH KK·Filed 1995·Granted May 24, 2005·4 cites·25 claims
- 3740US6877075B2Information processor, information processing method and information processing program and recording mediumRICOH KK·Filed 2002·Granted Apr 5, 2005·0 cites·24 claims
- 3835US2004043219A1Pattern forming method for carbon nanotube, and field emission cold cathode and method of manufacturing the cold cathodeFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →