Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4810788 | Azetidinone disulfide derivatives and a process for preparing the same | Sigeru Torii, Hideo Tanaka, Junzo Nokami, Michio Sasaoka, Norio Saito | 1989-03-07 |
| 4801720 | Azetidinone disulfides and a ring opening process for preparing the same | Sigeru Torii, Hideo Tanaka, Junzo Nokami, Michio Sasaoka, Norio Saito | 1989-01-31 |