Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886871 | Melt-stable poly(arylene thioetherketone) and production process thereof | Takashi Kaneko, Yutaka Kobayashi, Yo Iizuka, Takayuki Katto, Zenya Shiiki | 1989-12-12 |
| 4873283 | Molded or formed poly(arylene thioether-ketone) articles | Yo Iizuka, Toshitaka Kouyama, Takayuki Katto, Zenya Shiiki | 1989-10-10 |
| 4837294 | Polyarylene thioether composition containing polyarylene ether nucleating agent | Yukio Ichikawa, Takashi Kaneko, Takayuki Katto | 1989-06-06 |
| 4826906 | Poly(arylene thioether-ketone) compositions improved in both melt stability and crystallinity | Ken Kashiwadate, Yo Iizuka, Toshitaka Kouyama, Takayuki Katto, Zenya Shiiki | 1989-05-02 |