Yasunobu Ooka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Papermaking additive and filled paper
- Patent number 8,349,135
- Issue date Jan 8, 2013
- Harima Chemicals, Inc.
- Kazunari Sakai
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Papermaking internal sizing agent and use thereof
- Patent number 8,241,462
- Issue date Aug 14, 2012
- Harima Chemicals, Inc.
- Kazunari Sakai
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Patents Applicationslast 30 patents

Information Patent Application
PAPERMAKING ADDITIVE AND FILLED PAPER
- Publication number 20100084102
- Publication date Apr 8, 2010
- Kazunari Sakai
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE