Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868240 | Polyarylene thioether of high crystallizing rate and a process for producing the same | Takayuki Katto, Zenya Shiiki | 1989-09-19 |
| 4859734 | Composition of polyarylene thioether | Takayuki Katto | 1989-08-22 |
| 4837294 | Polyarylene thioether composition containing polyarylene ether nucleating agent | Takashi Kaneko, Yoshikatsu Satake, Takayuki Katto | 1989-06-06 |
| 4820759 | Polyarylene thiother composition | Takayuki Katto, Zenya Shiiki | 1989-04-11 |