Inventor

Osamu Koizumi

Inventor

Ibaraki, JP

Overview

1977–2017

Patent span

Electricity

Primary field (CPC H)

Patents· 90 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H02Kprimary

H02KDynamo-electric machines30%

Y02TClimate change mitigation technologies related to transportation16%

G11BInformation storage based on relative movement between record carrier and transducer13%

B60LPropulsion of electrically-propelled vehicles10%

B41JTypewriters7%

Y10TTechnical subjects covered by former us classification5%

B60KArrangement or mounting of propulsion units or of transmissions in vehicles3%

B62DMotor vehicles2%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters2%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%

PatentTitleYear

9,534,923'Sensor device with sampling function, and sensor data processing system using same'2017 8,198,775'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2012 8,002,076'Electric power steering apparatus'2011 7,956,506'Driving apparatus'2011 7,851,959'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2010 7,847,462'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2010 7,808,144'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2010 7,733,406'Image signal generation unit, digital camera, and image signal generation method'2010 7,683,516'Production method for rotating electric machine and stator coils, and electric power steering motor'2010 7,671,502'Driving apparatus'2010 7,667,365'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2010 7,453,179'DC brushless motor for electrical power steering and the production method thereof'2008 7,446,448'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2008 7,417,349'Driving apparatus'2008 7,378,773'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2008 7,294,988'Synchronous motor drive unit and a driving method thereof'2007 7,242,128'DC brushless motor for electrical power steering and the production method thereof'2007 7,215,055'Vehicle'2007 7,196,447'Rotating electric machine'2007 7,147,929'Method of manufacturing a resin-molded stator'2006 7,122,934'Rotating electric machine, motor-driven vehicle and resin insert-molding method'2006 7,119,470'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2006 7,067,943'Resin-molded stator, a method of manufacturing the same, and a rotary machine using the same'2006 6,963,154'Permanent magnet type electric rotating machine and hybrid electric vehicle using it'2005 6,949,856'Permanent magnet rotating electric machine and electrically driven vehicle employing same'2005 6,876,117'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2005 6,849,983'Rotary machine having bypath magnetic path blocking magnetic barrier'2005 6,822,360'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2004 6,798,103'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2004 6,734,592'Permanent magnet rotating electric machine and electrically driven vehicle employing same'2004 6,700,282'Rotary electric machine and method for connecting stator conductors'2004 6,661,147'Electric vehicle and rotary electric machine having a divided rotor core'2003 6,548,933'Stator of rotating electric machine'2003 6,528,920'Permanent magnet rotary machine and electric vehicle using the same'2003 6,481,089'Method for manufacturing an electromotive machine having an insulated coil'2002 6,452,302'Rotary electric machine and electric vehicle using the same'2002 6,445,100'Permanent magnet dynamo electric machine'2002 6,429,565'Permanent magnet type electric rotating machine and hybrid electric vehicle using it'2002 6,404,152'Motor control device'2002 6,396,183'Permanent magnet rotating electric machine and electrically driven vehicle employing same'2002 6,299,087'Data cartridge having a reduced static charge'2001 6,242,837'Permanent magnet rotary machine and electric vehicle using the same'2001 6,239,525'Permanent magnet dynamoelectric rotating machine and electric vehicle equipped with the same'2001 6,229,241'Structure and manufacturing method for motor and stator'2001 6,208,054'Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine'2001 6,188,157'Parmanent magnet dynamo electric machine'2001 6,175,468'Reproducing apparatus with auxiliary shutter configuration'2001 6,133,662'Permanent magnet dynamoelectric rotating machine and electric vehicle equipped with the same'2000 6,034,459'Permanent magnet type dynamo electric machine and electric vehicle using the same'2000 6,034,460'Permanent magnet rotating electric machine and electrically driven vehicle employing same'2000 5,917,684'Magnetic head apparatus, tape cartridge and recording/reproducing apparatus for increasing tape stability'1999 5,886,433'Dynamoelectric machine'1999 5,872,692'Recording/reproducing apparatus, magnetic head and tape cartridge'1999 5,860,523'Tape cassette receiving housing'1999 5,850,980'Tape cassette'1998 5,850,316'Tape cartridge and driving system having rotation detection unit for drive roll to maintain constant contact pressure with the capstan roll'1998 5,847,906'Recording/reproducing apparatus, magnetic head and tape cartridge'1998 5,811,904'Permanent magnet dynamo electric machine'1998 5,757,579'Data cartridge drive for receiving data cartridges of varied memory capacity'1998 5,744,880'Rotating motor and motor-driven vehicle'1998 5,699,209'Data cartridge drive'1997 5,690,224'Storage case for tape cassette'1997 5,678,760'Cooling system of electric automobile and electric motor used therefor'1997 5,562,258'Belt driven cartridge for guiding tape with reduced offtracking'1996 5,504,644'Recording/erasing prevention device'1996 D0367050'Magnetic tape cartridge'1996 5,474,249'Method for producing tape leaders for hubs'1995 5,335,131'Tape cartridge having a transparent panel covering the tape sensing opening'1994 RE034629'Method and apparatus for loading ink ribbon'1994 5,287,240'Tape cassette'1994 5,239,436'Tape cartridge with increased tape capacity'1993 5,204,796'Tape cassette with tape tension controlled by grease of a specified range of viscosity'1993 5,174,667'Transfer printer'1992 5,118,208'Printer with interlocked movable platen and presser'1992 5,106,215'Transfer printer with removable print head'1992 5,097,374'Tape cassette having tapered guide pins press-fitted into cassette wall and grease lubricant for rollers'1992 5,082,273'Slip storing apparatus'1992 5,062,722'Thermal printer with reciprocal paper feed control'1991 5,044,801'Printing apparatus'1991 4,997,298'Method and apparatus for loading ink ribbon'1991 4,982,946'Apparatus for transporting paper'1991 4,973,175'Electronic printing apparatus'1990 4,953,994'Thermal printer with reciprocal paper feed control'1990 4,938,616'Thermal printer'1990 4,934,847'Thermal transfer printer with ribbon tensioning mechanism'1990 D0307893'Magnetic recording disk cartridge'1990 4,879,621'Disk restraint'1989 4,589,105'Flexible disc cassette'1986 4,357,565'Control apparatus for variable-speed reversible motor'1982 4,039,853'Magnetizing device for permanent magnet motor for electric vehicle'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–2012Patents assigned to HITACHI LTD (48)· patent assignee history

1982–2011Based in Ibaraki, JP· patent location history

1986–2001Patents assigned to SONY CORP (22)· patent assignee history

1986–2001Based in Miyagi, JP· patent location history

1990–1994Patents assigned to TOKYO ELECTRIC CO LTD (13)· patent assignee history

1990–1994Based in Shizuoka, JP· patent location history

1996–2017Based in Tokyo, JP· patent location history

1998–2012Patents assigned to HITACHI CAR ENG CO LTD (29)· patent assignee history

2002–2012Based in Higashi-Ibaraki-gun, JP· patent location history

2012–2017Patents assigned to KOIZUMI OSAMU (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	48	1977–2012
HITACHI CAR ENG CO LTD	29	1998–2012
SONY CORP	22	1986–2001
TOKYO ELECTRIC CO LTD	13	1990–1994
KOIZUMI OSAMUself	2	2012–2017

Locations

Location	Patents	Span
Ibaraki, JP	31	1982–2011
Miyagi, JP	21	1986–2001
Higashi-Ibaraki-gun, JP	18	2002–2012
Shizuoka, JP	13	1990–1994
Tokyo, JP	2	1996–2017