Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853468 | Process for the preparation of cephem derivatives | Sigeru Torii, Kenji Uneyama, Hideo Tanaka, Junzo Nokami, Michio Sasaoka +1 more | 1989-08-01 |
| 4798890 | Process for preparation of azetidinone derivatives | Sigeru Torii, Hideo Tanaka, Michio Sasaoka | 1989-01-17 |