Yuzuru Kamata

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Transformer station and breaker apparatus
- Patent number 5,777,842
- Issue date Jul 7, 1998
- Hitachi, Ltd.
- Masanori Tsukushi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Gas insulated apparatus with internal coated insulation layer of hi...
- Patent number 4,667,061
- Issue date May 19, 1987
- Hitachi, Ltd.
- Toshio Ishikawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Gas-insulated electrical apparatus with electret for captivating co...
- Patent number 4,564,721
- Issue date Jan 14, 1986
- Hitachi, Ltd.
- Toshio Ishikawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Noise-reduction device for stationary induction apparatus
- Patent number 4,514,714
- Issue date Apr 30, 1985
- Hitachi, Ltd.
- Minoru Kanoi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Temperature measurement apparatus
- Patent number 4,345,471
- Issue date Aug 24, 1982
- Hitachi, Ltd.
- Fumihiro Endo
- G01 - MEASURING TESTING
Information Patent Grant
Disc ceramic capacitor
- Patent number 4,306,274
- Issue date Dec 15, 1981
- Hitachi, Ltd.
- Tokio Yamagiwa
- H01 - BASIC ELECTRIC ELEMENTS