Takao Arai

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Papermaking method
- Patent number 5,069,754
- Issue date Dec 3, 1991
- Mitsui-Cyanamid, Ltd.
- Naotaka Watababe
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE