Yoshitaka Yagihashi

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Hitachi-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gas-insulated switchgear tank
- Patent number 7,193,172
- Issue date Mar 20, 2007
- Hitachi, Ltd.
- Toshiaki Rokunohe
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Substation with surge arresters
- Patent number 5,712,756
- Issue date Jan 27, 1998
- Hitachi, Ltd.
- Jun Ozawa
- 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 for gas insulated switchgear device
- Patent number 5,373,279
- Issue date Dec 13, 1994
- Hitachi, Ltd.
- Jun Ozawa
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Gas-insulated switchgear tank
- Publication number 20060186091
- Publication date Aug 24, 2006
- Hitachi Ltd.
- Toshiaki Rokunohe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Gas-insulated switchgear tank
- Publication number 20050056617
- Publication date Mar 17, 2005
- Toshiaki Rokunohe
- H01 - BASIC ELECTRIC ELEMENTS