Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5897821 | Method for manufacturing chitosan fiber | — | 1999-04-27 |
| 5436275 | Porous acrylonitrile polymer fiber | Mamoru Ashida | 1995-07-25 |
| 5344569 | Process for recovering thiocyanate | Noriyuki Kohara | 1994-09-06 |
| 5300229 | Process for removing colored components from solvent for polyacrylonitrile | Noriyuki Kohara | 1994-04-05 |