Tetsuo Nakayasu

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Ube, JP

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Patents Grantslast 30 patents

Information Patent Grant
Silicon nitride powder
- Patent number 5,641,434
- Issue date Jun 24, 1997
- Ube Industries Ltd.
- Tetsuo Yamada
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Sialon-based sintered body and process for producing same
- Patent number 5,200,374
- Issue date Apr 6, 1993
- Ube Industries, Ltd.
- Tetsuo Yamada
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Process for producing .alpha.-Sialon powder
- Patent number 4,845,059
- Issue date Jul 4, 1989
- UBE Industries, Ltd.
- Yasuhiko Kohtoku
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES