Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5258442 | Polyphenylene sulfide resin composition | Toshikazu Kato, Yasuhisa Ogita | 1993-11-02 |
| 5151495 | Process for producing poly (para-phenylene-sulfide) | Hiroshi Inoue, Toshikazu Kato | 1992-09-29 |
| 5097003 | Process for producing polyphenylene sulfide ketone polymers | Satoshi Tomagou, Toshikazu Kato | 1992-03-17 |
| 5093467 | Production of poly(arylene sulfide sulfone) with excess water to alkali metal sulfide | Takehiko Sakane, Toshikazu Kato | 1992-03-03 |
| 5037953 | Process for producing poly (para-phenylene-sulfide) | Hiroshi Inoue, Toshikazu Kato | 1991-08-06 |
| 5032672 | Process for preparing polyl(phenylene sulfide) | Toshikazu Kato, Hiroshi Inoue | 1991-07-16 |
| 4981947 | Aromatic sulfideamide polymer and method for producing the same | Satoshi Tomagou, Toshikazu Kato, Hiroshi Inoue | 1991-01-01 |
| 4958003 | Aromatic sulfideamide polymer and method for producing the same | Satoshi Tomagou, Toshikazu Kato, Hiroshi Inoue | 1990-09-18 |
| 4895959 | Purification of N-methyl-2-pyrrolidone | Toshikazu Kato, Hiroshi Inoue | 1990-01-23 |
| 4883702 | Polyphenylene sulfide resin composition useful for plating | Masatoshi Sato, Noriaki Emura | 1989-11-28 |