Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686466 | Tricyclic condensed heterocyclic compounds their production and use | Giichi Goto, Keisuke Hirai | 1997-11-11 |
| 5620973 | Tetracyclic condensed heterocyclic compounds and their use | Giichi Goto, Masaomi Miyamoto | 1997-04-15 |