Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833134 | Cephem compounds | Kiminori Tomimatsu, Michiyuki Sendai | 1989-05-23 |
| 4826834 | Cephem compounds | Yoshinobu Yoshimura, Naoto Hashimoto | 1989-05-02 |
| 4822788 | 1-sulfo-2-oxozetidine derivatives and their product ion | Taisuke Matsuo, Michihiko Ochiai | 1989-04-18 |