Yukio Osawa

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Contact material for a vacuum circuit breaker and a method for manu...
- Patent number 5,853,083
- Issue date Dec 29, 1998
- Fuji Electric Co., Ltd.
- Masayuki Furusawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method and apparatus for detecting a reduction in the degree of vac...
- Patent number 5,399,973
- Issue date Mar 21, 1995
- Fuji Electric Co., Ltd.
- Tadao Kitamura
- G01 - MEASURING TESTING