Kin-ichi Shirakawa

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Ibaraki, JA

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Patents Grantslast 30 patents

Information Patent Grant
Paperboard impregnated with polyurethane resin
- Patent number 3,953,169
- Issue date Apr 27, 1976
- Takeda Chemical Ind., Ltd.
- Seiichi Igarashi
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE