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Kiyoshi Nakata
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Iwase, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Power conversion device and electric railroad vehicle equipped with...
Patent number
11,211,881
Issue date
Dec 28, 2021
Hitachi, Ltd.
Keisuke Horiuchi
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Control apparatus for power converter
Patent number
6,642,689
Issue date
Nov 4, 2003
Hitachi, Ltd.
Seiji Ishida
B60 - VEHICLES IN GENERAL
Information
Patent Grant
DC apparatus and vehicle using the same
Patent number
6,633,495
Issue date
Oct 14, 2003
Hitachi, Ltd.
Seiji Ishda
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Railway vehicle operation-control system and a railway vehicle usin...
Patent number
6,600,978
Issue date
Jul 29, 2003
Hitachi, Ltd.
Masahiro Nagasu
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Method for controlling a vehicle provided with an electric power co...
Patent number
6,556,460
Issue date
Apr 29, 2003
Hitachi, Ltd.
Seiji Ishida
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Control apparatus of electric vehicle
Patent number
6,456,909
Issue date
Sep 24, 2002
Hitachi, Ltd.
Motomi Shimada
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Control device for electric power translating device
Patent number
6,437,997
Issue date
Aug 20, 2002
Hitachi, Ltd.
Satoru Inarida
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Control device for electric power translating device
Patent number
6,307,759
Issue date
Oct 23, 2001
Hitachi, Ltd.
Satoru Inarida
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Electric power converting system with integrator providing output i...
Patent number
6,304,472
Issue date
Oct 16, 2001
Hitachi, Ltd.
Masahiro Nagasu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Apparatus and method for controlling induction motor
Patent number
6,166,514
Issue date
Dec 26, 2000
Hitachi, Ltd.
Takeshi Ando
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Semiconductor module including switching device chips and diode chips
Patent number
5,929,519
Issue date
Jul 27, 1999
Hitchi, Ltd.
Mutsuhiro Mori
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Semiconductor module for a power conversion device
Patent number
5,801,936
Issue date
Sep 1, 1998
Hitachi, Ltd.
Mutsuhiro Mori
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Pulse width modulation control system for electric power converter
Patent number
5,781,423
Issue date
Jul 14, 1998
Hitachi, Ltd.
Satoru Inarida
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Power conversion device and semiconductor module suitable for use i...
Patent number
5,731,970
Issue date
Mar 24, 1998
Hitachi, Ltd.
Mutsuhiro Mori
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Electric power conversion equipment
Patent number
5,680,299
Issue date
Oct 21, 1997
Hitachi, Ltd.
Kouji Yasuda
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Three level power converting apparatus having means for balancing D...
Patent number
5,627,742
Issue date
May 6, 1997
Hitachi, Ltd.
Kiyoshi Nakata
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Electric power converting apparatus
Patent number
5,587,891
Issue date
Dec 24, 1996
Hitachi, Ltd.
Kiyoshi Nakata
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Inverter control apparatus
Patent number
5,532,569
Issue date
Jul 2, 1996
Hitachi, Ltd.
Tokunosuke Tanamachi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Control apparatus of power converter and control apparatus of elect...
Patent number
5,506,765
Issue date
Apr 9, 1996
Hitachi, Ltd.
Kiyoshi Nakata
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Multilevel inverter having voltage dividing capacitors distributed...
Patent number
5,481,448
Issue date
Jan 2, 1996
Hitachi, Ltd.
Kiyoshi Nakata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Electric power converting apparatus
Patent number
5,467,262
Issue date
Nov 14, 1995
Hitachi, Ltd.
Kiyoshi Nakata
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Neutral-point clamped inverter device using semiconductor modules
Patent number
5,459,655
Issue date
Oct 17, 1995
Hitachi, Ltd.
Mutsuhiro Mori
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Electric power converter arrangement and electric rolling stock con...
Patent number
5,375,050
Issue date
Dec 20, 1994
Hitachi, Ltd.
Kiyoshi Nakata
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Power converter for converting DC voltage into AC phase voltage hav...
Patent number
5,361,196
Issue date
Nov 1, 1994
Hitachi, Ltd.
Tokunosuke Tanamachi
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Control apparatus for suppressing a third harmonic neutral point vo...
Patent number
5,321,599
Issue date
Jun 14, 1994
Hitachi, Ltd.
Tokunosuke Tanamachi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Inverter control apparatus
Patent number
5,250,890
Issue date
Oct 5, 1993
Hitachi, Ltd.
Tokunosuke Tanamachi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Power conversion system
Patent number
5,177,677
Issue date
Jan 5, 1993
Hitachi, Ltd.
Kiyoshi Nakata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
POWER CONVERSION DEVICE AND ELECTRIC RAILROAD VEHICLE EQUIPPED WITH...
Publication number
20210075342
Publication date
Mar 11, 2021
Hitachi, Ltd
Keisuke HORIUCHI
B60 - VEHICLES IN GENERAL
Information
Patent Application
DC apparatus and vehicle using the same
Publication number
20030043609
Publication date
Mar 6, 2003
Seiji Ishida
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
A METHOD FOR CONTROLLING A VEHICLE PROVIDED WITH AN ELECTRONIC POWE...
Publication number
20030043605
Publication date
Mar 6, 2003
Hitachi, Ltd.
Seiji Ishida
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Railway vehicle operation-control system and a railway vehicle usin...
Publication number
20020161490
Publication date
Oct 31, 2002
Hitachi, Ltd.
Masahiro Nagasu
B60 - VEHICLES IN GENERAL
Information
Patent Application
Control apparatus for power converter
Publication number
20020141212
Publication date
Oct 3, 2002
Seiji Ishida
B60 - VEHICLES IN GENERAL