Issued Patents All Time
Showing 51–70 of 70 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4794164 | Process for producing a polyarylene sulfide of excellent handling property and a polyarylene sulfide produced by the process thereof | Takao Iwasaki, Yo Iizuka, Takayuki Katto | 1988-12-27 |
| 4785057 | Para-phenylene sulfide block copolymer, process for the production of the same | Takayuki Katto, Yo Iizuka, Takao Iwasaki, Toshitaka Kouyama | 1988-11-15 |
| 4769426 | Process for preparation of polyarylene thioethers having high melt crystallization temperature | Takao Iwasaki, Yo Iizuka, Toshitaka Kouyama | 1988-09-06 |
| 4761468 | Process for preparing polyarylene thioether having thiol/thiolate end group concentration of 10 micro mole/g or less | Tsuneo Okamoto, Takao Iwasaki, Yo Iizuka | 1988-08-02 |
| 4748205 | Thermoplastic resin composition | Takayuki Katto, Yasumasa Komatsu | 1988-05-31 |
| 4746698 | Method of preventing corrosion of apparatus for melt-processing polyarylene thioethers | Toshitaka Kouyama, Takao Iwasaki, Takayuki Katto | 1988-05-24 |
| 4745167 | Polyarylene sulfide preparation in titanium reaction vessel with two distinct temperature ranges | Yo Iizuka, Takao Iwasaki, Takayuki Katto | 1988-05-17 |
| 4732935 | Thermoplastic resin composition | Takayuki Katto, Yasumasa Komatsu | 1988-03-22 |
| 4701495 | Thermoplastic resin composition | Takayuki Katto, Yasumasa Komatsu | 1987-10-20 |
| 4645826 | Process for production of high to ultra-high molecular weight linear polyarylenesulfides | Yo Iizuka, Takao Iwasaki, Takayuki Katto | 1987-02-24 |
| 4636553 | Thermoplastic resin composition | Takayuki Katto, Yasumasa Komatsu | 1987-01-13 |
| 4613654 | Polyarylenesulfide complexes, processes for production and uses thereof | Takayuki Katto, Toshitaka Kouyama, Takao Iwasaki | 1986-09-23 |
| 4537953 | Process for producing aromatic sulfide polymer with alkaline earth metal oxide dehydrating agent | Yukichika Kawakami, Yo Iizuka | 1985-08-27 |
| 4514558 | Process for producing aromatic sulfide polymer with anhydrous amorphous vitreous complex dehalogenation agent | Yo Iizuka, Yukichika Kawakami | 1985-04-30 |
| 4495332 | Process for producing aromatic sulfide polymers | Yo Iizuka, Yukichika Kawakami | 1985-01-22 |
| 4451640 | Process for producing aromatic sulfide polymer | Yukichika Kawakami | 1984-05-29 |
| 4447578 | Thermoplastic resin composition | Takayuki Katto, Yasumasa Komatsu | 1984-05-08 |
| 4352910 | Vinyl chloride resin composition with multi-stage impact modifier | Takayuki Katto | 1982-10-05 |
| 4292285 | Method for removing compounds with offensive odor from a gas containing the same | Masaaki Nakao | 1981-09-29 |
| 4273675 | Process for the preparation of spherical carbon particles and spherical activated carbon particles | Kazuhiro Watanabe | 1981-06-16 |