Soumiya; Shigeyuki

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Tokyo, JP

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Patents Grantslast 30 patents

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Hydrothermal process for preparing zirconia-alumina base ultra-fine...
- Patent number 4,769,351
- Issue date Sep 6, 1988
- Chichibu Cement Co., Ltd.
- Shigeyuki Soumiya
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES