Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6156864 | Preparation of flexible polyurethane foams | Kazuhiko Ohkubo, Tomoki Tsutsui, Tamotsu Kunihiro, Ariko Nishikawa, Tsukuru Izukawa | 2000-12-05 |
| 5777175 | Preparation of polyoxyalkylene polyols, polymer polyols and flexible polyurethane foams | Kazuhiko Ohkubo, Tomoki Tsutsui, Tamotsu Kunihiro, Ariko Nishikawa, Tsukuru Izukawa +3 more | 1998-07-07 |
| 5545712 | Preparation process for polyoxyalkylene polyol | Tomoki Tsutsui, Tsukuru Izukawa, Kazuhiko Ohkubo | 1996-08-13 |
| 5468840 | Preparation process of polyoxyalkylene polyols and process of alkylene oxide recovery | Tomoki Tsutsui, Tsukuru Izukawa, Kazuhiko Ohkubo | 1995-11-21 |