Kazuo Ohnawa

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Takarazuka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Calcium carbonate powders
- Patent number 4,159,312
- Issue date Jun 26, 1979
- Shiraishi Kogyo Kaisha, Ltd.
- Hiroji Shibazaki
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE