Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646310 | N-(2-cyanoethyl)-6-fluoroalkyl-2h-1-benzopyran derivatives | Hiroshi Koga, Haruhiko Sato | 1997-07-08 |
| 5614633 | Benzopyran derivatives | Hiroshi Koga, Haruhiko Sato, Hiroyuki Nabata | 1997-03-25 |