Shinji Nagata

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparation of silicon nitride powder of good sintering...
- Patent number 4,612,297
- Issue date Sep 16, 1986
- Toya Soda Manufacturing Co., Ltd.
- Kiyoshi Kasai
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES