Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5596096 | Azetidinone derivatives and method for producing azetidinone and cephalosoporin derivatives | Osamu Sakanaka, Shouhei Yasuda, Shinjiro Sumi, Katsuharu Iinuma, Ken Nishihata | 1997-01-21 |