Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5369191 | Aromatic thioether ketone/thioether sulfone copolymer and production process thereof | Yukichika Kawakami | 1994-11-29 |
| 5312894 | Granular high-melt-stable poly(arylene thioether-ketone) and production process thereof | Yukichika Kawakami | 1994-05-17 |