Yoshi Akatsu

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Tokaimura, JP

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Patents Grantslast 30 patents

Information Patent Grant
Surge arrester with a bypass gap
- Patent number 4,472,754
- Issue date Sep 18, 1984
- Hitachi, Ltd.
- Akio Mizukoshi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Enclosed-type zinc-oxide surge arrester
- Patent number 4,321,651
- Issue date Mar 23, 1982
- Hitachi, Ltd.
- Jun Ozawa
- H01 - BASIC ELECTRIC ELEMENTS