Issued Patents All Time
Showing 26–50 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4935473 | Polyphenylene sulfide composition and method of producing the same | Makoto Fukuda, Yukio Ichikawa, Toshikatsu Nitoh | 1990-06-19 |
| 4931516 | Process for producing polyarylene sulfide in titanium vessel with addition of water | Yo Iizuka, Takao Iwasaki, Zenya Shiiki | 1990-06-05 |
| 4897238 | Stretched poly(arylene thioether-ketone) films and production process thereof | Toshitaka Kouyama, Zenya Shiiki, Yoshikatsu Satake, Toshiya Mizuno, Yo Iizuka | 1990-01-30 |
| 4895924 | Poly(arylene thioether-ketone) fibers and production process thereof | Yoshikatsu Satake, Yo Iizuka, Hiroyuki Endo, Toshitaka Kouyama, Zenya Shiiki | 1990-01-23 |
| 4895691 | Poly(arylene thioether-ketone) fibers and production process thereof | Yoshikatsu Satake, Yo Iizuka, Hiroyuki Endo, Toshitaka Kouyama, Zenya Shiiki | 1990-01-23 |
| 4895892 | Melt-stable poly(arylene thioether-ketone) compositions | Yoshikatsu Satake, Takashi Kaneko, Yutaka Kobayashi, Yo Iizuka, Toshitaka Kouyama +1 more | 1990-01-23 |
| 4895893 | Heat-resistant resin compositions, and heat-resistant molded or formed articles and production process thereof | Yoshikatsu Satake, Takashi Kaneko, Yutaka Kobayashi, Yukio Ichikawa, Yo Iizuka +4 more | 1990-01-23 |
| 4895912 | Stretched poly(arylene thioether-ketone) films and production process thereof | Yoshikatsu Satake, Yo Iizuka, Toshitaka Kouyama, Zenya Shiiki, Toshiya Mizuno | 1990-01-23 |
| 4895925 | Melt-stable poly(arylene thioether-ketone) and production process thereof | Yoshikatsu Satake, Takashi Kaneko, Yutaka Kobayashi, Yo Iizuka, Zenya Shiiki | 1990-01-23 |
| 4886871 | Melt-stable poly(arylene thioetherketone) and production process thereof | Yoshikatsu Satake, Takashi Kaneko, Yutaka Kobayashi, Yo Iizuka, Zenya Shiiki | 1989-12-12 |
| 4873283 | Molded or formed poly(arylene thioether-ketone) articles | Yoshikatsu Satake, Yo Iizuka, Toshitaka Kouyama, Zenya Shiiki | 1989-10-10 |
| 4868240 | Polyarylene thioether of high crystallizing rate and a process for producing the same | Yukio Ichikawa, Zenya Shiiki | 1989-09-19 |
| 4863669 | Process for forming polyarylenethioether stretched blow-molded vessel | Toshitaka Kouyama, Takao Iwasaki, Yo Iizuka, Zenya Shiiki | 1989-09-05 |
| 4859734 | Composition of polyarylene thioether | Yukio Ichikawa | 1989-08-22 |
| 4837294 | Polyarylene thioether composition containing polyarylene ether nucleating agent | Yukio Ichikawa, Takashi Kaneko, Yoshikatsu Satake | 1989-06-06 |
| 4826906 | Poly(arylene thioether-ketone) compositions improved in both melt stability and crystallinity | Yoshikatsu Satake, Ken Kashiwadate, Yo Iizuka, Toshitaka Kouyama, Zenya Shiiki | 1989-05-02 |
| 4820759 | Polyarylene thiother composition | Yukio Ichikawa, Zenya Shiiki | 1989-04-11 |
| 4814430 | Process for producing poly(arylene sulfide) of reduced alkali metal content | Takao Iwasaki, Yo Iizuka, Zenya Shiiki | 1989-03-21 |
| 4812539 | Polyarylene sulfide preparation in titanium reaction vessel with two distinct temperature ranges | Yo Iizuka, Takao Iwasaki, Zenya Shiiki | 1989-03-14 |
| 4801416 | Transparent and little colored polyarylenethioether primary melt molding, preparation and utilization thereof | Akio Kobayashi, Toshitaka Kouyama, Yo Iizuka, Zenya Shiiki | 1989-01-31 |
| 4795671 | Para-phenylene sulfide block copolymers, process for the production of the same and use thereof | Zenya Shiiki, Yo Iizuka, Takao Iwasaki, Toshitaka Kouyama | 1989-01-03 |
| 4794164 | Process for producing a polyarylene sulfide of excellent handling property and a polyarylene sulfide produced by the process thereof | Takao Iwasaki, Yo Iizuka, Zenya Shiiki | 1988-12-27 |
| 4785057 | Para-phenylene sulfide block copolymer, process for the production of the same | Zenya Shiiki, Yo Iizuka, Takao Iwasaki, Toshitaka Kouyama | 1988-11-15 |
| 4748205 | Thermoplastic resin composition | Yasumasa Komatsu, Zenya Shiiki | 1988-05-31 |
| 4746698 | Method of preventing corrosion of apparatus for melt-processing polyarylene thioethers | Toshitaka Kouyama, Takao Iwasaki, Zenya Shiiki | 1988-05-24 |