Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883879 | Cephalosporin compounds, processes for their preparation and antibacterial agents | Yoshiyuki Zama, Nobuo Ishiyama, Tsuneo Saita, Masao Hirose, Masaaki Yokoyama +4 more | 1989-11-28 |
| 4822786 | Cephalosporin compounds, and antibacterial agents | Yoshiyuki Zama, Nobuo Ishiyama, Tsuneo Saita, Masao Hirose, Masaaki Yokoyama +4 more | 1989-04-18 |