Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5663162 | Cephem derivatives | Kunio Atsumi, Eijiro Umemura, Yuko Kano, Sohjiro Shiokawa, Toshiaki Kudo +3 more | 1997-09-02 |
| 5661144 | Cephem derivatives with 3-substituted bis heterocycles | Masaki Tsushima, Kunio Atsumi, Atsushi Tamura | 1997-08-26 |
| 5631257 | Benzoxazole derivatives | Yasuo Sato, Masaaki Izumi, Fukio Konno, Seiji Shibahara, Shigeharu Inoye +2 more | 1997-05-20 |
| 5607927 | Cephalosporin derivative | Masaki Tsushima, Atsushi Tamura, Seiji Shibahara | 1997-03-04 |