Issued Patents All Time
Showing 1–2 of 2 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, Yoshinori Uegaki | 1987-05-05 |
| 4591932 | Auto-reverse mechanism for tape recorders | — | 1986-05-27 |