Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4981789 | One-step enzymatic conversion of cephalosporin C and derivatives to 7-aminocephalosporanic acid and derivatives | — | 1991-01-01 |
| 4536397 | Antibiotics, neoviridogriseins, and their method of production | Yasushi Okumura, Kazuhiko Okamura, Yasuo Fugakawa, Tomoyuki Ishikura, Kageaki Kouno | 1985-08-20 |
| 4456592 | Antibiotics, neoviridogriseins, and their method of production | Yasushi Okumura, Kazuhiko Okamura, Yasuo Fugakawa, Tomoyuki Ishikura, Kageaki Kouno | 1984-06-26 |
| 4368203 | Antibiotics and derivatives thereof having .beta.-lactamase inhibitory activity and production thereof | Kazuhiko Okamura, Shoji Hirata, Yasushi Okumura, Yasuo Fukagawa, Yasutaka Shimauchi +2 more | 1983-01-11 |
| 4355112 | Streptomyces culture | Yasushi Okumura, Kazuhiko Okamura, Yasuo Fugakawa, Tomoyuki Ishikura, Kageaki Kouno | 1982-10-19 |
| 4318916 | Antibiotic PS-5 and derivatives having .beta.-lactamase inhibitory activity and production thereof | Kazuhiko Okamura, Shoji Hirata, Yasushi Okumura, Yasuo Fukagawa, Yasutaka Shimauchi +2 more | 1982-03-09 |