Issued Patents All Time
Showing 1–2 of 2 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 |
| 5405955 | Method for producing azetidinone and cephalosporin derivatives | Osamu Sakanaka, Shouhei Yasuda, Shinjiro Sumi, Katsuharu Iinuma, Ken Nishihata | 1995-04-11 |