Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686466 | Tricyclic condensed heterocyclic compounds their production and use | Yuji Ishihara, Keisuke Hirai | 1997-11-11 |
| 5620973 | Tetracyclic condensed heterocyclic compounds and their use | Yuji Ishihara, Masaomi Miyamoto | 1997-04-15 |
| 5604210 | Inhibitor of vascular permeability enhancer | Akinobu Nagaoka, Tetsuji Imamoto, Tsuneo Asano, Yoshihiro Sugiura | 1997-02-18 |