Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4663431 | Process for preparing polyarylene sulfide with alkali metal salt of phenolic aromatic sulfonic acid | Tsuguo Fujii, Katsumasa Yamamoto, Tetsuo Aratani | 1987-05-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4663431 | Process for preparing polyarylene sulfide with alkali metal salt of phenolic aromatic sulfonic acid | Tsuguo Fujii, Katsumasa Yamamoto, Tetsuo Aratani | 1987-05-05 |