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Yukio Kawabata
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Hitachi-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Control system for permanent magnet synchronous motor and module
Patent number
7,388,341
Issue date
Jun 17, 2008
Hitachi, Ltd.
Kazuaki Tobari
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Synchronous motor drive unit and a driving method thereof
Patent number
7,294,988
Issue date
Nov 13, 2007
Hitachi, Ltd.
Toshiyuki Ajima
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Driving equipment and semiconductor equipment for alternating-curre...
Patent number
6,828,752
Issue date
Dec 7, 2004
Hitachi, Ltd.
Junnosuke Nakatsugawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Driving equipment for synchronous motors
Patent number
6,657,413
Issue date
Dec 2, 2003
Hitachi, Ltd.
Junnosuke Nakatsugawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Starting control method of and control apparatus for synchronous mo...
Patent number
6,642,681
Issue date
Nov 4, 2003
Hitachi, Ltd.
Yukio Kawabata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Controller for PWM/PAM motor, air conditioner, and method of motor...
Patent number
6,626,002
Issue date
Sep 30, 2003
Hitachi, Ltd.
Yasuo Notohara
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Motor controller
Patent number
6,603,280
Issue date
Aug 5, 2003
Hitachi, Ltd.
Yasuo Notohara
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Control apparatus for alternating-current motor
Patent number
6,570,358
Issue date
May 27, 2003
Hitachi, Ltd.
Junnosuke Nakatsugawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Motor driving circuit, a method for driving a motor, and a semicond...
Patent number
6,534,948
Issue date
Mar 18, 2003
Hitachi, Ltd.
Hitoshi Ohura
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Brushless motor control device and equipment using the control device
Patent number
6,479,956
Issue date
Nov 12, 2002
Hitachi, Ltd.
Yukio Kawabata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Control apparatus of brushless motor and machine and apparatus usin...
Patent number
6,337,548
Issue date
Jan 8, 2002
Hitachi, Ltd.
Yukio Kawabata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Motor controller
Patent number
6,198,240
Issue date
Mar 6, 2001
Hitachi, Ltd.
Yasuo Notohara
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Control apparatus of brushless motor and machine and apparatus usin...
Patent number
6,191,545
Issue date
Feb 20, 2001
Hitachi, Ltd.
Yukio Kawabata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
PWM/PAM control mode switching type motor control apparatus, and mo...
Patent number
6,075,328
Issue date
Jun 13, 2000
Hitachi, Ltd.
Yasuo Notohara
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Air conditioner
Patent number
5,929,591
Issue date
Jul 27, 1999
Hitachi, Ltd.
Kouji Katou
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Patents Applications
last 30 patents
Information
Patent Application
Synchronous motor drive unit and a driving method thereof
Publication number
20060125439
Publication date
Jun 15, 2006
HITACHI, LTD.
Toshiyuki Ajima
B60 - VEHICLES IN GENERAL
Information
Patent Application
Control system for permanent magnet synchronous motor and module
Publication number
20060055362
Publication date
Mar 16, 2006
Kazuaki Tobari
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Driving equipment and semiconductor equipment for alternating-curre...
Publication number
20040056632
Publication date
Mar 25, 2004
Junnosuke Nakatsugawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Driving equipment for synchronous motors
Publication number
20020180398
Publication date
Dec 5, 2002
Hitachi, Ltd.
Junnosuke Nakatsugawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Control apparatus for alternating-current motor
Publication number
20020167289
Publication date
Nov 14, 2002
Hitachi, Ltd.
Junnosuke Nakatsugawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Starting control method of and control apparatus for synchronous mo...
Publication number
20020117989
Publication date
Aug 29, 2002
Yukio Kawabata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Motor driving circuit, a method for driving a motor, and a semicond...
Publication number
20010040440
Publication date
Nov 15, 2001
Hitoshi Ohura
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Control apparatus of brushless motor and machine and apparatus usin...
Publication number
20010004197
Publication date
Jun 21, 2001
Yukio Kawabata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Motor controller
Publication number
20010001227
Publication date
May 17, 2001
Yasuo Notohara
F24 - HEATING RANGES VENTILATING