Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5326849 | Method for producing an aromatic poly (thio) ether ketone | Yukio Takahashi, Norihiko Yoneda | 1994-07-05 |
| 5171821 | Process for producing a phenolate and process for producing an aromatic polyether ketone employing it | Hiroshi Noguchi, Fumitoshi Sakaguchi, Yuko Mihara | 1992-12-15 |
| 4977230 | Heat-resistant film or sheet | Shigeo Utsumi, Michio Nakata | 1990-12-11 |
| 4857626 | Wholly aromatic polyester and process for its production | Osamu Kishiro, Atsushi Kasai, Hiroshi Kamata | 1989-08-15 |
| 4782132 | Process for producing a copolyester | Osamu Kishiro, Atsushi Kasai, Seigo Okumura, Ken Honma, Chieko Muramoto | 1988-11-01 |
| 4707536 | Catalytic preparation of aromatic polyketone from phosgene and aromatic ether or sulfide | Norihiko Yoneda, Tsuyoshi Fukuhara | 1987-11-17 |
| 4661581 | Process for producing aromatic polyether ketones and polythioether ketones | Michio Nakata | 1987-04-28 |
| 4520208 | Aromatic polyester containing phenolphthalein unit and bis-phenol unit | Masahiro Hayashi, Takashi Oikawa | 1985-05-28 |
| 4246396 | Process for producing polyoxymethylene | Ikuo Sukegawa, Seiichi Mukai, Masaharu Shikama | 1981-01-20 |