Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6489515 | Gas-phase dehydration reaction process | Hideyuki Kambe, Shukichi Ugamura, Shinji Takasaki | 2002-12-03 |
| 6436243 | Process for recovering N-vinyl-2-pyrrolidone | Yoshinari Yamaguchi, Hitoshi Yano, Akira Kurusu | 2002-08-20 |
| 6391994 | Production process for vinylpyrrolidone polymer | Daijo Tomihisa, Nobuyuki Harada, Akio Naka, Toshiaki Kuriyama, Hideyuki Nishibayashi | 2002-05-21 |