Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6184365 | Anthracycline derivatives having 4-amino-2,4,6-trideoxy-2 fluoro-.alpha.-L-talopyranosyl group | Tomio Takeuchi, Sumio Umezawa, Yasushi Takagi | 2001-02-06 |
| 6075135 | 3,4-di-O,N-Protected-4-amino-2,4,6-trideoxy-2-fluoro-L-manno-pyranosyl halide and a process for its preparation | Tomio Takeuchi, Sumio Umezawa, Yasushi Takagi | 2000-06-13 |
| 5958889 | Anthracycline derivatives having 4-amino-2,4,6-trideoxy-2-fluoro-mannopyranosyl group | Tomio Takeuchi, Sumio Umezawa, Yasushi Takagi | 1999-09-28 |
| 5886167 | 2'-deoxy-2'-epi-2'-fluorocoformycin | Tomio Takeuchi, Sumio Umezawa, Yoshiaki Takahashi | 1999-03-23 |
| 5831072 | Process for the preparation of 2'-deoxy-2'-halocoformycins or steroisomers thereof | Tomio Takeuchi, Sumio Umezawa, Yoshiaki Takahashi | 1998-11-03 |
| 5801257 | Anthracycline derivative having a trifluoromethylated sugar | Tomio Takeuchi, Sumio Umezawa, Yasushi Takagi | 1998-09-01 |
| 5789386 | Fluorine-containing anthracycline derivatives having hydroxyl groups(s) mono- or di-o-aminoalkanoylated in the sugar moiety thereof | Tomio Takeuchi, Sumio Umezawa, Yasushi Takagi, Hiromi Sohtome | 1998-08-04 |
| 5773607 | Processes for preparing 2'-deoxy-2'-fluorocoformycin and stereoisomers thereof | Tomio Takeuchi, Sumio Umezawa, Yoshiaki Takahashi | 1998-06-30 |
| 5719130 | Anthracycline derivative having a trifluoromethylated sugar | Tomio Takeuchi, Sumio Umezawa, Yasushi Takagi | 1998-02-17 |
| 5527781 | 4-O-(aminoglycosyl)- or 4,6-di-O-(aminoglycosyl)-2,5-dideoxy-5,5-difluorostreptamine derivatives | Tomio Takeuchi, Sumio Umezawa, Tetsuo Shitara, Shunzo Fukatsu, Eijiro Umemura | 1996-06-18 |
| 5101022 | Mycaminosyl tylonolide derivatives | Hamao Umezawa, Sumio Umezawa, Tomio Takeuchi, Akihiro Tanaka, Shuichi Sakamoto | 1992-03-31 |
| 5096888 | 3-deoxy mycaminosyl tylonolide derivatives | Sumio Umezawa, Tomio Takeuchi, Shunji Kageyama, Shuichi Sakamoto | 1992-03-17 |
| 5034517 | Process for producing 2,6-dideoxy-2-fluoro-L-talopyranose | Hamao Umezawa, Sumio Umezawa, Tomio Takeuchi, Yasushi Takagi | 1991-07-23 |
| 4945081 | Mycaminosyl tylonolide derivatives | Hamao Umezawa, Sumio Umezawa, Tomio Takeuchi, Akihiro Tanaka, Shuichi Sakamoto | 1990-07-31 |
| 4914192 | Mycaminosyl tylonolide derivatives | Hamao Umezawa, Sumio Umezawa, Tomio Takeuchi, Akihiro Tanaka, Shuichi Sakamoto | 1990-04-03 |
| 4873225 | 1-n-(4-amino-3-fluoro-2-hydroxybutyryl)-kanamycins | Sumio Umezawa, Tomio Takeuchi, Kazuo Umezawa, Yoshiaki Takahashi, Tetsuo Shitara +2 more | 1989-10-10 |
| 4845082 | 3'4'-dideoxy-3'-fluorokanamycin B and production thereof | Hamao Umezawa, Sumio Umezawa, Yoshihiko Kobayashi | 1989-07-04 |
| 4794173 | Mycaminosyl tylonolide derivatives | Hamao Umezawa, Sumio Umezawa, Tomio Takeuchi, Akihiro Tanaka, Shuichi Sakamoto | 1988-12-27 |
| 4661474 | 2',3'-dideoxy-2'-fluorokanamycin A and 1-N-(.alpha.-hydroxy-.omega.-aminoalkanoyl) derivatives thereof | Hamao Umezawa, Sumio Umezawa, Yoshiaki Takahashi | 1987-04-28 |
| 4634688 | 3'-fluoro-3'-deoxykanamycin A | Hamao Umezawa, Sumio Umezawa, Yoshiaki Takahashi | 1987-01-06 |
| 4576931 | 23-C-Substituted mycaminosyl tylonolide, pharmaceutical compositions and method of use | Hamao Umezawa, Sumio Umezawa, Tomio Takeuchi, Akihiro Tanaka, Shuichi Sakamoto | 1986-03-18 |
| 4547492 | 1-N-(.omega.-Amino-.alpha.-hydroxyalkanoyl-2',3'-dideoxykanamycin A and pharmaceutical composition containing same | Hamao Umezawa, Sumio Umezawa, Toshio Yoneta, Shunzo Fukatsu | 1985-10-15 |
| 4477443 | Tylosin derivatives, their preparation and pharmaceutical compositions containing them | Hamao Umezawa, Sumio Umezawa, Tomio Takeuchi, Akihiro Tanaka, Hidenori Iwamoto +1 more | 1984-10-16 |
| 4473557 | "3""-Deoxystreptomycin production thereof and pharmaceutical compositions containing same" | Hamao Umezawa, Sumio Umezawa, Takayuki Usui | 1984-09-25 |
| 4469683 | "3""-Epistreptomycin and its dihydro derivative, pharmaceutical compositions and production of the same" | Hamao Umezawa, Sumio Umezawa, Tetsuo Shitara, Shuichi Sakamoto | 1984-09-04 |