Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6624299 | Process for producing cellulose acetate | Katsuyoshi Yamakawa, Koushin Matsuoka | 2003-09-23 |
| 6600034 | Method of producing cellulose polymers | Katsuyoshi Yamakawa, Hiroshi Onishi, Tadahiro Tsujimoto | 2003-07-29 |
| 6548660 | Producing method of cellulose polymer | Katsuyoshi Yamakawa, Hiroshi Onishi, Tadahiro Tsujimoto | 2003-04-15 |