Inventor
KOIZUMI OSAMU
JP90 patents
⚠️ This page may combine multiple inventors who share the name “KOIZUMI OSAMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
36 patentsUS6208054B1Mar 27, 2001
Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine
HITACHI LTD126 citations99
US6034460AMar 7, 2000
Permanent magnet rotating electric machine and electrically driven vehicle employing same
HITACHI LTD130 citations99
US5811904ASep 22, 1998
Permanent magnet dynamo electric machine
HITACHI LTD139 citations99
US6229241B1May 8, 2001
Structure and manufacturing method for motor and stator
HITACHI LTD90 citations98
US7294988B2Nov 13, 2007
Synchronous motor drive unit and a driving method thereof
HITACHI LTD88 citations97
US5678760AOct 21, 1997
Cooling system of electric automobile and electric motor used therefor
HITACHI LTD136 citations97
US6876117B2Apr 5, 2005
Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine
HITACHI LTD35 citations96
US6849983B2Feb 1, 2005
Rotary machine having bypath magnetic path blocking magnetic barrier
HITACHI LTD56 citations96
US6798103B2Sep 28, 2004
Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine
HITACHI LTD35 citations96
US6734592B2May 11, 2004
Permanent magnet rotating electric machine and electrically driven vehicle employing same
HITACHI LTD30 citations96
US6445100B2Sep 3, 2002
Permanent magnet dynamo electric machine
HITACHI LTD57 citations96
US6396183B1May 28, 2002
Permanent magnet rotating electric machine and electrically driven vehicle employing same
HITACHI LTD46 citations96
US6133662AOct 17, 2000
Permanent magnet dynamoelectric rotating machine and electric vehicle equipped with the same
HITACHI LTD73 citations96
US6034459AMar 7, 2000
Permanent magnet type dynamo electric machine and electric vehicle using the same
HITACHI LTD72 citations96
US5744880AApr 28, 1998
Rotating motor and motor-driven vehicle
HITACHI LTD122 citations95
US6822360B2Nov 23, 2004
Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine
HITACHI LTD19 citations93
US6661147B2Dec 9, 2003
Electric vehicle and rotary electric machine having a divided rotor core
HITACHI LTD32 citations93
US6452302B1Sep 17, 2002
Rotary electric machine and electric vehicle using the same
HITACHI LTD22 citations93
US6429565B1Aug 6, 2002
Permanent magnet type electric rotating machine and hybrid electric vehicle using it
HITACHI LTD36 citations93
US6242837B1Jun 5, 2001
Permanent magnet rotary machine and electric vehicle using the same
HITACHI LTD27 citations93
US6239525B1May 29, 2001
Permanent magnet dynamoelectric rotating machine and electric vehicle equipped with the same
HITACHI LTD39 citations93
US6188157B1Feb 13, 2001
Parmanent magnet dynamo electric machine
HITACHI LTD27 citations93
US7453179B2Nov 18, 2008
DC brushless motor for electrical power steering and the production method thereof
HITACHI LTD17 citations92
US7417349B2Aug 26, 2008
Driving apparatus
HITACHI LTD11 citations92
US5886433AMar 23, 1999
Dynamoelectric machine
HITACHI LTD36 citations92
US6404152B1Jun 11, 2002
Motor control device
HITACHI LTD29 citations91
US6700282B2Mar 2, 2004
Rotary electric machine and method for connecting stator conductors
HITACHI LTD46 citations90
US6548933B2Apr 15, 2003
Stator of rotating electric machine
HITACHI LTD28 citations88
US8002076B2Aug 23, 2011
Electric power steering apparatus
HITACHI LTD7 citations84
US7147929B2Dec 12, 2006
Method of manufacturing a resin-molded stator
HITACHI LTD14 citations84
US7122934B2Oct 17, 2006
Rotating electric machine, motor-driven vehicle and resin insert-molding method
HITACHI LTD18 citations84
US6481089B1Nov 19, 2002
Method for manufacturing an electromotive machine having an insulated coil
HITACHI LTD16 citations84
US4357565ANov 2, 1982
Control apparatus for variable-speed reversible motor
HITACHI LTD20 citations80
US7851959B2Dec 14, 2010
Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine
HITACHI LTD4 citations74
US7808144B2Oct 5, 2010
Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine
HITACHI LTD3 citations74
US7671502B2Mar 2, 2010
Driving apparatus
HITACHI LTD6 citations74
TOKYO ELECTRIC CO LTD
5 patentsUS5062722ANov 5, 1991
Thermal printer with reciprocal paper feed control
TOKYO ELECTRIC CO LTD38 citations92
US4938616AJul 3, 1990
Thermal printer
TOKYO ELECTRIC CO LTD25 citations92
US5118208AJun 2, 1992
Printer with interlocked movable platen and presser
TOKYO ELECTRIC CO LTD20 citations82
US4953994ASep 4, 1990
Thermal printer with reciprocal paper feed control
TOKYO ELECTRIC CO LTD19 citations82
US4934847AJun 19, 1990
Thermal transfer printer with ribbon tensioning mechanism
TOKYO ELECTRIC CO LTD22 citations82
HITACHI CAR ENG CO LTD
4 patentsUS7196447B2Mar 27, 2007
Rotating electric machine
HITACHI CAR ENG CO LTD24 citations96
US7119470B2Oct 10, 2006
Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine
HITACHI CAR ENG CO LTD22 citations96
US7215055B2May 8, 2007
Vehicle
HITACHI CAR ENG CO LTD13 citations92
US6949856B2Sep 27, 2005
Permanent magnet rotating electric machine and electrically driven vehicle employing same
HITACHI CAR ENG CO LTD22 citations92
SONY CORP
4 patentsUS5690224ANov 25, 1997
Storage case for tape cassette
SONY CORP24 citations93
US5335131AAug 2, 1994
Tape cartridge having a transparent panel covering the tape sensing opening
SONY CORP20 citations93
US5239436AAug 24, 1993
Tape cartridge with increased tape capacity
SONY CORP21 citations91
US4589105AMay 13, 1986
Flexible disc cassette
SONY CORP33 citations89
MINNESOTA MINING & MFG
1 patentShowing the top 50 of 90 patents by PatentIndex Score.