Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5808055 | Copper catalyzed process for producing 4-substituted azetidinone derivatives | Masashi Nakajima, Yasuharu Kimura | 1998-09-15 |
| 5731431 | Process for preparing 4-substituted azetidinone derivatives | Yuuki Nakagawa, Tamio Hara | 1998-03-24 |