Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873225 | 1-n-(4-amino-3-fluoro-2-hydroxybutyryl)-kanamycins | Sumio Umezawa, Tsutomu Tsuchiya, Tomio Takeuchi, Kazuo Umezawa, Yoshiaki Takahashi +2 more | 1989-10-10 |
| 4845082 | 3'4'-dideoxy-3'-fluorokanamycin B and production thereof | Hamao Umezawa, Sumio Umezawa, Tsutomu Tsuchiya | 1989-07-04 |