Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4438109 | Tylosin derivatives | Hamao Umezawa, Sumio Umezawa, Akihiro Tanaka | 1984-03-20 |
| 4438107 | Aminoglycosides and use thereof | Isamu Watanabe, Takashi Yamaguchi, Kazuhiro Kamiya, Toshihito Mori, Hamao Umezawa +1 more | 1984-03-20 |
| 4357466 | Processes for the production of 3'-deoxykanamycin A and intermediates | Hamao Umezawa, Sumio Umezawa, Tomo Jikihara | 1982-11-02 |
| 4349666 | Process for the production of kanomycin B derivatives and products obtained therefrom | Hamao Umezawa, Sumio Umezawa, Toshiaki Miyake | 1982-09-14 |
| 4298727 | 3',4'-Dideoxykanamycin A and 1-N-(S)-.alpha.-hydroxy-.omega.-aminoalkanoyl) derivatives thereof | Hamao Umezawa, Sumio Umezawa, Tomo Jikahara, Toshiaki Miyake | 1981-11-03 |
| 4297485 | Production of a selectively protected N-acylated derivative of an aminoglycosidic antibiotic | Hamao Umezawa, Sumio Umezawa, Yasushi Takagi, Tomo Jikihara | 1981-10-27 |