Takeyoshi Watanabe

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Hitachi, JP

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Patents Grantslast 30 patents

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Reconstituted mica materials, reconstituted mica prepreg materials,...
- Patent number 4,576,856
- Issue date Mar 18, 1986
- Hitachi Chemical Company, Ltd.
- Hideji Kuwajima
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Reconstituted mica materials, reconstituted mica prepreg materials,...
- Patent number 4,491,618
- Issue date Jan 1, 1985
- Hitachi Chemical Company, Ltd.
- Hideji Kuwajima
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method for disintegrating mica flakes and apparatus used therefor
- Patent number 4,165,839
- Issue date Aug 28, 1979
- Hitachi Chemical Company, Ltd.
- Hideji Kuwajima
- B28 - WORKING CEMENT, CLAY, OR STONE