Masayoshi Ohashi

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Aichi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for production of aluminum nitride sintered body and aluminu...
- Patent number 5,837,633
- Issue date Nov 17, 1998
- Agency of Industrial Science and Technology
- Motohiro Toriyama
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Sintered high density silicon oxnitride and method for making the same
- Patent number 4,975,394
- Issue date Dec 4, 1990
- NGK Spark Plug Co., Ltd.
- Shuzo Kanzaki
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES