Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5332731 | Cephalosporin derivatives | Yuichi Yamamoto, Tsuneo Okonogi, Seiji Shibahara | 1994-07-26 |
| 5294705 | Process for the preparation of a 3-substituted thio-3-cephem compound | Yuichi Yamamoto, Tsuneo Okonogi, Seiji Shibahara | 1994-03-15 |