Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831026 | 2-oxa-isocephem compounds, compositions containing same and processes of using | Setsuro Fujii, Koichi Yasumura, Koichiro Jitsukawa, Sachio Toyama, Hidetsugu Tsubouchi +2 more | 1989-05-16 |