Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4427586 | 2-Oxoazetidine derivatives and production thereof | Mitsuo Numata, Masayoshi Yamaoka, Tatsuo Nishimura | 1984-01-24 |
| 4286088 | Process for preparing 7-aminocephalosporins | Susumu Tsushima, Masayasu Kato | 1981-08-25 |
| 4224441 | Derivatives of 7-aminocephalosporanic acid | Susumu Tsushima, Michiyuki Sendai, Mitsuru Shiraishi | 1980-09-23 |