Nippon Hardboard Co., Ltd.

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Nagoya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for manufacturing magnesium carbonate board
- Patent number 4,242,163
- Issue date Dec 30, 1980
- Nippon Hardboard Co., Ltd.
- Shiro Nakajima
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Gypsum moldings as building materials and methods manufacturing the...
- Patent number 4,239,716
- Issue date Dec 16, 1980
- Nippon Hardboard Co. Ltd.
- Nobumasa Ishida
- B28 - WORKING CEMENT, CLAY, OR STONE

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