Inventor · disambiguated record
Osamu Koizumi
Also filed as: KOIZUMI OSAMU
90 granted patents·7 pending applications·2,295 citations·filing 1975–2012
99Inventor score
Files withHITACHI LTD52SONY CORP21TOKYO ELECTRIC CO LTD13HITACHI CAR ENG CO LTD4CASIO COMPUTER CO LTD2
Top patents by PatentIndex Score
97 records- 0198US6208054B1Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machineHITACHI LTD·Filed 1997·Granted Mar 27, 2001·126 cites·15 claims
- 0298US6034460APermanent magnet rotating electric machine and electrically driven vehicle employing sameHITACHI LTD·Filed 1997·Granted Mar 7, 2000·130 cites·8 claims
- 0397US7294988B2Synchronous motor drive unit and a driving method thereofHITACHI LTD·Filed 2005·Granted Nov 13, 2007·88 cites·20 claims
- 0496US7119470B2Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machineHITACHI CAR ENG CO LTD·Filed 2005·Granted Oct 10, 2006·22 cites·12 claims
- 0596US6396183B1Permanent magnet rotating electric machine and electrically driven vehicle employing sameHITACHI LTD·Filed 2000·Granted May 28, 2002·46 cites·4 claims
- 0695US6876117B2Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machineHITACHI LTD·Filed 2004·Granted Apr 5, 2005·35 cites·24 claims
- 0795US6798103B2Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machineHITACHI LTD·Filed 2001·Granted Sep 28, 2004·35 cites·6 claims
- 0893US6849983B2Rotary machine having bypath magnetic path blocking magnetic barrierHITACHI LTD·Filed 2001·Granted Feb 1, 2005·56 cites·17 claims
- 0993US6229241B1Structure and manufacturing method for motor and statorHITACHI LTD·Filed 1998·Granted May 8, 2001·90 cites·7 claims
- 1093US5744880ARotating motor and motor-driven vehicleHITACHI LTD·Filed 1996·Granted Apr 28, 1998·122 cites·19 claims
- 1193US5678760ACooling system of electric automobile and electric motor used thereforHITACHI LTD·Filed 1993·Granted Oct 21, 1997·136 cites·3 claims
- 1292US7215055B2VehicleHITACHI CAR ENG CO LTD·Filed 2005·Granted May 8, 2007·13 cites·9 claims
- 1392US6133662APermanent magnet dynamoelectric rotating machine and electric vehicle equipped with the sameHITACHI LTD·Filed 1997·Granted Oct 17, 2000·73 cites·14 claims
- 1492US5811904APermanent magnet dynamo electric machineHITACHI LTD·Filed 1997·Granted Sep 22, 1998·139 cites·8 claims
- 1591US7453179B2DC brushless motor for electrical power steering and the production method thereofHITACHI LTD·Filed 2007·Granted Nov 18, 2008·17 cites·7 claims
- 1691US7196447B2Rotating electric machineHITACHI CAR ENG CO LTD·Filed 2005·Granted Mar 27, 2007·24 cites·9 claims
- 1791US6239525B1Permanent magnet dynamoelectric rotating machine and electric vehicle equipped with the sameHITACHI LTD·Filed 2000·Granted May 29, 2001·39 cites·2 claims
- 1890US6034459APermanent magnet type dynamo electric machine and electric vehicle using the sameHITACHI LTD·Filed 1999·Granted Mar 7, 2000·72 cites·5 claims
- 1990USD307893SMagnetic recording disk cartridgeMINNESOTA MINING & MFG·Filed 1988·Granted May 15, 1990·41 cites·1 claims
- 2089US7417349B2Driving apparatusHITACHI LTD·Filed 2005·Granted Aug 26, 2008·11 cites·9 claims
- 2189US6949856B2Permanent magnet rotating electric machine and electrically driven vehicle employing sameHITACHI CAR ENG CO LTD·Filed 2004·Granted Sep 27, 2005·22 cites·38 claims
- 2289US6700282B2Rotary electric machine and method for connecting stator conductorsHITACHI LTD·Filed 2002·Granted Mar 2, 2004·46 cites·7 claims
- 2388US6822360B2Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machineHITACHI LTD·Filed 2003·Granted Nov 23, 2004·19 cites·10 claims
- 2488US6661147B2Electric vehicle and rotary electric machine having a divided rotor coreHITACHI LTD·Filed 2002·Granted Dec 9, 2003·32 cites·5 claims
- 2588US6445100B2Permanent magnet dynamo electric machineHITACHI LTD·Filed 2000·Granted Sep 3, 2002·57 cites·19 claims
- 2686US7147929B2Method of manufacturing a resin-molded statorHITACHI LTD·Filed 2005·Granted Dec 12, 2006·14 cites·8 claims
- 2785US7378773B2Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machineHITACHI LTD·Filed 2006·Granted May 27, 2008·6 cites·39 claims
- 2885US4589105AFlexible disc cassetteSONY CORP·Filed 1984·Granted May 13, 1986·33 cites·3 claims
- 2983US6734592B2Permanent magnet rotating electric machine and electrically driven vehicle employing sameHITACHI LTD·Filed 2002·Granted May 11, 2004·30 cites·7 claims
- 3081US6429565B1Permanent magnet type electric rotating machine and hybrid electric vehicle using itHITACHI LTD·Filed 2000·Granted Aug 6, 2002·36 cites·10 claims
- 3180US7851959B2Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machineHITACHI LTD·Filed 2009·Granted Dec 14, 2010·4 cites·21 claims
- 3280US7242128B2DC brushless motor for electrical power steering and the production method thereofHITACHI LTD·Filed 2005·Granted Jul 10, 2007·8 cites·24 claims
- 3380US5062722AThermal printer with reciprocal paper feed controlTOKYO ELECTRIC CO LTD·Filed 1990·Granted Nov 5, 1991·38 cites·8 claims
- 3479US4938616AThermal printerTOKYO ELECTRIC CO LTD·Filed 1988·Granted Jul 3, 1990·25 cites·35 claims
- 3578US7733406B2Image signal generation unit, digital camera, and image signal generation methodCASIO COMPUTER CO LTD·Filed 2009·Granted Jun 8, 2010·4 cites·4 claims
- 3678US7671502B2Driving apparatusHITACHI LTD·Filed 2008·Granted Mar 2, 2010·6 cites·9 claims
- 3777US7122934B2Rotating electric machine, motor-driven vehicle and resin insert-molding methodHITACHI LTD·Filed 2004·Granted Oct 17, 2006·18 cites·25 claims
- 3877US6548933B2Stator of rotating electric machineHITACHI LTD·Filed 2001·Granted Apr 15, 2003·28 cites·5 claims
- 3976US7808144B2Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machineHITACHI LTD·Filed 2009·Granted Oct 5, 2010·3 cites·10 claims
- 4076US4953994AThermal printer with reciprocal paper feed controlTOKYO ELECTRIC CO LTD·Filed 1988·Granted Sep 4, 1990·19 cites·9 claims
- 4176US4934847AThermal transfer printer with ribbon tensioning mechanismTOKYO ELECTRIC CO LTD·Filed 1988·Granted Jun 19, 1990·22 cites·20 claims
- 4274US8002076B2Electric power steering apparatusHITACHI LTD·Filed 2006·Granted Aug 23, 2011·7 cites·13 claims
- 4373US5335131ATape cartridge having a transparent panel covering the tape sensing openingSONY CORP·Filed 1993·Granted Aug 2, 1994·20 cites·25 claims
- 4472US5690224AStorage case for tape cassetteSONY CORP·Filed 1995·Granted Nov 25, 1997·24 cites·12 claims
- 4571US5044801APrinting apparatusTOKYO ELECTRIC CO LTD·Filed 1989·Granted Sep 3, 1991·18 cites·18 claims
- 4671US4879621ADisk restraintMINNESOTA MINING & MFG·Filed 1988·Granted Nov 7, 1989·17 cites·13 claims
- 4770US7683516B2Production method for rotating electric machine and stator coils, and electric power steering motorHITACHI LTD·Filed 2006·Granted Mar 23, 2010·5 cites·10 claims
- 4870US5239436ATape cartridge with increased tape capacitySONY CORP·Filed 1991·Granted Aug 24, 1993·21 cites·5 claims
- 4968US6404152B1Motor control deviceHITACHI LTD·Filed 1999·Granted Jun 11, 2002·29 cites·8 claims
- 5065US6188157B1Parmanent magnet dynamo electric machineHITACHI LTD·Filed 1998·Granted Feb 13, 2001·27 cites·16 claims
Showing the top 50 of 97 patent records by PatentIndex Score.
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