Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4985555 | Cephem compounds | Takao Takaya, Zenzaburo Tozuka, Kohji Kawabata | 1991-01-15 |
| 4973699 | Cephem compounds and processes for preparation thereof | Takao Takaya, Zenzaburo Tozuka, Shintaro Nishimura | 1990-11-27 |
| 4871730 | Cephem compounds | Takao Takaya, Zenzaburo Tozuka, Kohji Kawabata | 1989-10-03 |
| 4861769 | Cephem compounds | Takao Takaya, Zenzaburo Tozuka, Shintaro Nishimura | 1989-08-29 |
| 4656160 | Aminoglycoside derivatives | Takao Takaya, Hideo Tsutsumi, Keiji Matsuda | 1987-04-07 |
| 4622318 | 3-(substituted-ethenyl or ethynyl-thiomethyl) cephems | Takao Takaya, Zenzaburo Tozuka, Kohji Kawabata | 1986-11-11 |
| 4582908 | 1-substituted-5-thiol-tetrazole intermediates | Takao Takaya, Yoshikazu Inoue, Masayoshi Murata | 1986-04-15 |
| 4554269 | Kasugamycin derivatives, pharmaceutical compositions and method of use | Takao Takaya, Hideo Tsutsumi, Keiji Matsuda | 1985-11-19 |
| 4493834 | Cephem compounds | Takao Takaya, Yoshikazu Inoue, Masayoshi Murata | 1985-01-15 |
| 4493831 | Aminoglycoside derivatives | Takao Takaya, Hideo Tsutsumi, Keiji Matsuda | 1985-01-15 |
| 4420477 | Cephem compounds | Takao Takaya, Yoshikazu Inoue, Masayoshi Murata | 1983-12-13 |