Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4707187 | Mortar admixture | Kenji Tsuda | 1987-11-17 |
| 4617385 | Quaternary ammonium salts of carboxymethylcellulose | Takeo Ohmiya | 1986-10-14 |
| 4529788 | Process for preparing novel graft polymer | Masahiro Asami, Kiyoshi Okitsu, Yoshiaki Okumura, Masatoshi Mikumo, Shoji Watanabe | 1985-07-16 |
| 4520192 | Carboxyalkyl acetyl celluloses, their salts and a process for the preparation of them | — | 1985-05-28 |
| 4443595 | Cellulose ester derivatives and a process for the production thereof | Yoshiaki Okumura, Tsuyoshi Sei | 1984-04-17 |
| 4311833 | Process for preparing ethylcarboxymethylcellulose | Kazuo Notsu | 1982-01-19 |