Takanobu Aoyama

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gas insulated switchgear apparatus
- Patent number 5,757,614
- Issue date May 26, 1998
- Hitachi, Ltd.
- Masaki Hachida
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Gas insulated switchgear and power transmission system using the sw...
- Patent number 5,754,382
- Issue date May 19, 1998
- Hitachi, Ltd.
- Takanobu Aoyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Gas insulated switchgear
- Patent number 5,581,439
- Issue date Dec 3, 1996
- Hitachi, Ltd.
- Masaki Hachida
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Grounding switch
- Patent number 4,555,603
- Issue date Nov 26, 1985
- Hitachi, Ltd.
- Takanobu Aoyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Three-phase combined type gas insulated electrical apparatus
- Patent number 4,458,099
- Issue date Jul 3, 1984
- Hitachi, Ltd.
- Susumu Takeuti
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER