Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4952319 | Process for separating liquid mixture | Asazi Hayashi, Shizue Kamata, Toru Imanara | 1990-08-28 |
| 4438256 | Copolyamide acid and copolyimide | Takayuki Ohta, Seiichi Hino | 1984-03-20 |