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Inventor

Toshimi Abukawa

Inventor
Hitachiota, JP

Overview

23→
Patents
1976–2005
Patent span
Electricity
Primary field (CPC H)

Patents· 23 as inventor

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

H02Kprimary
H02KDynamo-electric machines63%
B62DMotor vehicles15%
Y10TTechnical subjects covered by former us classification11%
B60GVehicle suspension arrangements4%
H01RElectrically-conductive connections4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
PatentTitleYear
6,927,526'Motor'20056,876,118'Abduction-type motor and fabrication method of motor stator thereof'20056,812,611'Permanent magnet type electric rotating machine'20046,806,615'Core, rotating machine using the core and production method thereof'20046,794,786'Electric motor'20046,784,590'Permanent magnet motor'20046,731,027'Three-phase hybrid type stepping motor'20046,335,582'Permanent-magnet revolving electrodynamic machine with a concentrated winding stator'20026,313,558'Electric rotary machine having concentrated winding stator'20015,208,502'Sliding current collector made of ceramics'19935,089,737'DC rotary electric machine of permanent magnet field type'19925,083,054'Permanent magnet field type DC machine'19925,033,565'Motor-driven power steering apparatus'19914,960,178'Motor-driven power steering apparatus'19904,926,960'Electric power steering apparatus for vehicle'19904,875,539'Electric power steering control system'19894,865,148'Vehicle height control apparatus responsive to power steering operation'19894,823,037'DC Electric motor having field poles of permanent magnet'19894,794,291'Permanent magnet field DC machine'19884,704,789'Method of manufacturing electromagnetic members'19874,703,210'Miniature electric non-uniform magnetization rotating machine'19874,639,625'Direct-current machine having permanent magnet field system'19873,955,273'Method of manufacturing flat type wound armatures'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2005Patents assigned to HITACHI LTD (17)· patent assignee history
1987Patents assigned to HITACHI CABLE (1)· patent assignee history
1987–2005Based in Hitachiota, JP· patent location history
1987–2004Based in Hitachioota, JP· patent location history
1989–1991Patents assigned to HITACHI AUTOMOTIVE ENG (4)· patent assignee history
1989Patents assigned to HITACHI AUTOMOTIVE ENGINEER CO (1)· patent assignee history
2001–2005Patents assigned to JAPAN SERVO (9)· patent assignee history
2001–2004Based in Gunma, JP· patent location history
2002Based in Ohta, JP· patent location history
2004–2005Based in Kiryu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD171976–2005
JAPAN SERVO92001–2005
HITACHI AUTOMOTIVE ENG41989–1991
HITACHI AUTOMOTIVE ENGINEER CO11989
HITACHI CABLE11987
Locations
LocationPatentsSpan
Hitachiota, JP101987–2005
Hitachioota, JP51987–2004
Gunma, JP32001–2004
Kiryu, JP22004–2005
Ohta, JP12002