Satoshi Watahiki

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Power transforming system and method
- Patent number 6,525,917
- Issue date Feb 25, 2003
- Hitachi, Ltd.
- Hiroshi Arita
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Insulating arrester capable of providing a voltage distribution tha...
- Patent number 6,466,425
- Issue date Oct 15, 2002
- Hitachi, Ltd.
- Shingo Shirakawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Tank-type surge arrester
- Patent number 5,959,823
- Issue date Sep 28, 1999
- Hitachi, Ltd.
- Shingo Shirakawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Arrangement of arrestors in a gas-insulated switchgear
- Patent number 5,590,018
- Issue date Dec 31, 1996
- Hitachi, Ltd.
- Satoshi Watahiki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Arrestor for gas insulated switchgear
- Patent number 5,585,996
- Issue date Dec 17, 1996
- Hitachi, Ltd.
- Jun Ozawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Arrester and manufacturing method thereof
- Patent number 5,561,581
- Issue date Oct 1, 1996
- Hitachi, Ltd.
- Satoshi Watahiki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Surge arrester using zinc oxide elements installed in parallel, and...
- Patent number 5,548,468
- Issue date Aug 20, 1996
- Hitachi, Ltd.
- Shingo Shirakawa
- H01 - BASIC ELECTRIC ELEMENTS