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Tatsuji Shirouzu
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Hitachi, JP
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last 30 patents
Information
Patent Grant
DC power supply circuit arrangement
Patent number
5,115,389
Issue date
May 19, 1992
Hitachi, Ltd.
Shigetoshi Ouchi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Driving apparatus for DC circuit breakers
Patent number
4,862,313
Issue date
Aug 29, 1989
Hitachi, Ltd.
Tatsuji Shirouzu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
DC circuit breaker and method of commutation thereof
Patent number
4,805,062
Issue date
Feb 14, 1989
Hitachi, Ltd.
Tatsuji Shirouzu
H01 - BASIC ELECTRIC ELEMENTS