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Mitsuyuki Hombu
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Katsuta, JP
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Patents Grants
last 30 patents
Information
Patent Grant
State detecting system and device employing the same
Patent number
7,406,389
Issue date
Jul 29, 2008
Hitachi, Ltd.
Akihiko Emori
B60 - VEHICLES IN GENERAL
Information
Patent Grant
State detecting system and device employing the same
Patent number
7,085,661
Issue date
Aug 1, 2006
Hitachi, Ltd.
Akihiko Emori
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Motor control apparatus and electric vehicle using same
Patent number
6,914,408
Issue date
Jul 5, 2005
Hitachi, Ltd.
Takefumi Sawada
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Control apparatus for electric motor
Patent number
6,696,812
Issue date
Feb 24, 2004
Hitachi, Ltd.
Satoru Kaneko
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Motor control device
Patent number
6,555,988
Issue date
Apr 29, 2003
Hitachi, Ltd.
Ryoso Masaki
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Power inverter
Patent number
6,414,867
Issue date
Jul 2, 2002
Hitachi, Ltd.
Osamu Suzuki
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Gate drive power source for electric power converter
Patent number
5,424,937
Issue date
Jun 13, 1995
Hitachi, Ltd.
Ryuji Iyotani
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Large capacity variable speed PWM spatial vector type sub-harmonic...
Patent number
5,298,848
Issue date
Mar 29, 1994
Hitachi, Ltd.
Shigeta Ueda
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Motor-driven power steering apparatus
Patent number
5,033,565
Issue date
Jul 23, 1991
Hitachi, Ltd.
Toshimi Abukawa
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
Motor-driven power steering apparatus
Patent number
4,960,178
Issue date
Oct 2, 1990
Hitachi, Ltd.
Toshimi Abukawa
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
Electric power steering apparatus for vehicle
Patent number
4,926,960
Issue date
May 22, 1990
Hitachi, Ltd.
Hisatugu Ishikura
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
Electric power converter
Patent number
4,926,306
Issue date
May 15, 1990
Hitachi, Ltd.
Shigeta Ueda
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Electric power steering control system
Patent number
4,875,539
Issue date
Oct 24, 1989
Hitachi, Ltd.
Toshimi Abukawa
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
Method and apparatus for controlling power converter
Patent number
4,870,556
Issue date
Sep 26, 1989
Hitachi, Ltd.
Hiromi Inaba
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Current-type converter protecting apparatus
Patent number
4,757,436
Issue date
Jul 12, 1988
Hitachi, Ltd.
Shigeta Ueda
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Current-source power converting apparatus with self-extinction devices
Patent number
4,672,520
Issue date
Jun 9, 1987
Hitachi, Ltd.
Shigeta Ueda
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Control circuit for power converter apparatus
Patent number
4,599,685
Issue date
Jul 8, 1986
Hitachi, Ltd.
Mitsuyuki Hombu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Apparatus for repeatedly applying short-circuit pulses to a current...
Patent number
4,581,693
Issue date
Apr 8, 1986
Hitachi, Ltd.
Shigeta Ueda
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Gate control circuit for current-type inverter apparatus
Patent number
4,549,259
Issue date
Oct 22, 1985
Hitachi, Ltd.
Shigeta Ueda
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
State detecting system and device employing the same
Publication number
20060247871
Publication date
Nov 2, 2006
Hitachi, Ltd
Akihiko Emori
B60 - VEHICLES IN GENERAL
Information
Patent Application
State detecting system and device employing the same
Publication number
20050119856
Publication date
Jun 2, 2005
Hitachi, Ltd
Akihiko Emori
B60 - VEHICLES IN GENERAL
Information
Patent Application
State detecting system and device employing the same
Publication number
20030195719
Publication date
Oct 16, 2003
Hitachi, Ltd.
Akihiko Emori
B60 - VEHICLES IN GENERAL
Information
Patent Application
Control apparatus for electric motor
Publication number
20020163319
Publication date
Nov 7, 2002
Satoru Kaneko
B60 - VEHICLES IN GENERAL
Information
Patent Application
Motor control apparatus and electric vehicle using same
Publication number
20020117990
Publication date
Aug 29, 2002
HITACHI LTD.
Takefumi Sawada
B60 - VEHICLES IN GENERAL
Information
Patent Application
Power inverter
Publication number
20010014029
Publication date
Aug 16, 2001
Osamu Suzuki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Motor control device
Publication number
20010002784
Publication date
Jun 7, 2001
Hitachi, Ltd.
Ryoso Masaki
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER