Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5597879 | Process for producing styrenic polymer | Hisashi Ase, Kazutoshi Ishikawa | 1997-01-28 |
| 5306790 | Process for producing styrenic polymer | Kazutoshi Ishikawa, Yoshihiko Ishida | 1994-04-26 |
| 5254647 | Process for producing styrene-based polymers | Koji Yamamoto, Kazutoshi Ishikawa, Takashi Izumi | 1993-10-19 |
| 5241024 | Method for producing butene-1 polymer | Takashi Yamawaki | 1993-08-31 |
| 5037907 | Process for producing mainly syndiotactic styrene-based polymers | Kazutoshi Ishikawa, Koji Yamamoto, Takashi Izumi | 1991-08-06 |