Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873283 | Molded or formed poly(arylene thioether-ketone) articles | Yoshikatsu Satake, Yo Iizuka, Takayuki Katto, Zenya Shiiki | 1989-10-10 |
| 4863669 | Process for forming polyarylenethioether stretched blow-molded vessel | Takayuki Katto, Takao Iwasaki, Yo Iizuka, Zenya Shiiki | 1989-09-05 |
| 4826906 | Poly(arylene thioether-ketone) compositions improved in both melt stability and crystallinity | Yoshikatsu Satake, Ken Kashiwadate, Yo Iizuka, Takayuki Katto, Zenya Shiiki | 1989-05-02 |
| 4816335 | High-quality polyarylene-thioether fibers and method for production thereof | Harunobu Egawa, Yo Iizuka, Zenya Shiiki | 1989-03-28 |
| 4801416 | Transparent and little colored polyarylenethioether primary melt molding, preparation and utilization thereof | Akio Kobayashi, Yo Iizuka, Takayuki Katto, Zenya Shiiki | 1989-01-31 |
| 4795671 | Para-phenylene sulfide block copolymers, process for the production of the same and use thereof | Zenya Shiiki, Takayuki Katto, Yo Iizuka, Takao Iwasaki | 1989-01-03 |