Inventor · disambiguated record
Masahiro Okamura
Also filed as: OKAMURA MASAHIRO · TANAKA TOMOYUKI · YOKOTA TAKESHI
33 granted patents·3 pending applications·968 citations·filing 1974–2013
98Inventor score
Files withHITACHI LTD19PIONEER CORP9PIONEER ELECTRONIC CORP2IDEMITSU KOSAN CO1IDEMITSU PETROCHEMICAL CO1
Top patents by PatentIndex Score
36 records- 0197US4745088AVapor phase growth on semiconductor wafersHITACHI LTD·Filed 1986·Granted May 17, 1988·213 cites·9 claims
- 0296US5247126AImage reproducing apparatus, image information recording medium, and musical accompaniment playing apparatusPIONEER ELECTRIC CORP·Filed 1991·Granted Sep 21, 1993·136 cites·12 claims
- 0390US4223328AField controlled thyristor with dual resistivity field layerHITACHI LTD·Filed 1978·Granted Sep 16, 1980·42 cites·11 claims
- 0487US5235124AMusical accompaniment playing apparatus having phoneme memory for chorus voicesPIONEER ELECTRONIC CORP·Filed 1992·Granted Aug 10, 1993·55 cites·9 claims
- 0587US4649990AHeat-conducting cooling moduleHITACHI LTD·Filed 1985·Granted Mar 17, 1987·75 cites·12 claims
- 0684US6813508B1Apparatus and method for mobile communicationPIONEER CORP·Filed 2000·Granted Nov 2, 2004·38 cites·9 claims
- 0784US6310582B1Antenna systemSHARP KK·Filed 2000·Granted Oct 30, 2001·69 cites·17 claims
- 0879US4514747AField controlled thyristor with double-diffused source regionHITACHI LTD·Filed 1982·Granted Apr 30, 1985·32 cites·12 claims
- 0974US6546258B1Communication apparatus and communication methodPIONEER CORP·Filed 2000·Granted Apr 8, 2003·19 cites·8 claims
- 1070US6980814B2Mobile communication system with mobile station position detectionPIONEER CORP·Filed 2001·Granted Dec 27, 2005·15 cites·19 claims
- 1169US4083062AAvalanche photodiode with reduced avalanche breakdown voltageHITACHI LTD·Filed 1977·Granted Apr 4, 1978·35 cites·21 claims
- 1267US4388635AHigh breakdown voltage semiconductor deviceHITACHI LTD·Filed 1980·Granted Jun 14, 1983·19 cites·21 claims
- 1366US7043440B2Play back apparatusPIONEER CORP·Filed 2001·Granted May 9, 2006·6 cites·20 claims
- 1466US5218580AUser management system for musical accompaniment playing apparatusPIONEER ELECTRONIC CORP·Filed 1992·Granted Jun 8, 1993·16 cites·9 claims
- 1566US4016593ABidirectional photothyristor deviceHITACHI LTD·Filed 1975·Granted Apr 5, 1977·28 cites·15 claims
- 1663US6744225B2Ion acceleratorRIKEN·Filed 2002·Granted Jun 1, 2004·14 cites·18 claims
- 1762US4079405ASemiconductor photodetectorHITACHI LTD·Filed 1975·Granted Mar 14, 1978·26 cites·10 claims
- 1860US8872127B2Beam current controller for laser ion sourceOKAMURA MASAHIRO·Filed 2012·Granted Oct 28, 2014·2 cites·38 claims
- 1958US6731675B2Receiving device for spread spectrum communication systemPIONEER CORP·Filed 2001·Granted May 4, 2004·5 cites·8 claims
- 2057US4040084ASemiconductor device having high blocking voltage with peripheral circular grooveHITACHI LTD·Filed 1975·Granted Aug 2, 1977·16 cites·15 claims
- 2154US4210464AMethod of simultaneously controlling the lifetimes and leakage currents in semiconductor devices by hot electron irradiation through passivating glass layersHITACHI LTD·Filed 1978·Granted Jul 1, 1980·14 cites·7 claims
- 2253US6701468B1Code error correcting circuit, code error correcting method, communicating apparatus and communicating methodPIONEER CORP·Filed 2000·Granted Mar 2, 2004·7 cites·6 claims
- 2352US4110781ABidirectional grooved thyristor fired by activation of the beveled surfacesHITACHI LTD·Filed 1976·Granted Aug 29, 1978·13 cites·21 claims
- 2451US4201598AElectron irradiation process of glass passivated semiconductor devices for improved reverse characteristicsHITACHI LTD·Filed 1977·Granted May 6, 1980·14 cites·9 claims
- 2550US7046698B1Communicating apparatus and communicating methodPIONEER CORP·Filed 2000·Granted May 16, 2006·2 cites·4 claims
- 2650US4216487ABidirectional light-activated thyristor having substrate optical isolationHITACHI LTD·Filed 1978·Granted Aug 5, 1980·12 cites·11 claims
- 2748US4491562AThermal fatigue resistant low-melting point solder alloysHITACHI LTD·Filed 1983·Granted Jan 1, 1985·8 cites·2 claims
- 2848US4354121AField controlled thyristor control circuit with additional FCT in reverse bias circuitHITACHI LTD·Filed 1981·Granted Oct 12, 1982·10 cites·15 claims
- 2948US2009109337A1Video display apparatus and video display methodPIONEER CORP·Filed 2007·Application pending·0 cites
- 3047US3968019AMethod of manufacturing low power loss semiconductor deviceHITACHI LTD·Filed 1975·Granted Jul 6, 1976·11 cites·13 claims
- 3145US2016033948A1Control systemPIONEER CORP·Filed 2013·Application pending·0 cites
- 3243US2007140934A1Catalyst supply deviceIDEMITSU KOSAN CO·Filed 2004·Application pending·0 cites
- 3341US4258377ALateral field controlled thyristorHITACHI LTD·Filed 1979·Granted Mar 24, 1981·4 cites·18 claims
- 3440US4682199AHigh voltage thyristor with optimized doping, thickness, and sheet resistivity for cathode base layerHITACHI LTD·Filed 1983·Granted Jul 21, 1987·6 cites·15 claims
- 3536US5504187APolymer granules containing little residual solventIDEMITSU PETROCHEMICAL CO·Filed 1994·Granted Apr 2, 1996·4 cites·14 claims
- 3634US3943550ALight-activated semiconductor-controlled rectifierHITACHI LTD·Filed 1974·Granted Mar 9, 1976·2 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →