Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4985555 | Cephem compounds | Takao Takaya, Zenzaburo Tozuka, Nobuyoshi Yasuda | 1991-01-15 |
| 4960766 | Cephem compounds | Takao Takaya, Kazuo Sakane, Kenzi Miyai | 1990-10-02 |
| 4960889 | 7-acylamino-3-vinylcephalosporanic acid derivatives and processes for the preparation thereof | Takao Takaya, Hisashi Takasugi, Takashi Masugi, Hideaki Yamanaka | 1990-10-02 |
| 4952578 | Cephem compound and a process for preparation thereof | Kazuo Sakane, Kenzi Miyai, Yoshiko Inamoto | 1990-08-28 |
| 4927818 | Cephem compounds and processes for preparation thereof | Takao Takaya, Kazuo Sakane, Kenzi Miyai | 1990-05-22 |
| 4904652 | 7-acylamino-3-substituted cephalosporanic acid derivatives | Takao Takaya, Hisashi Takasugi, Takashi Masugi, Hideaki Yamanaka | 1990-02-27 |
| 4871730 | Cephem compounds | Takao Takaya, Zenzaburo Tozuka, Nobuyoshi Yasuda | 1989-10-03 |
| 4731443 | 7-acylamino-3-vinylcephalosporanic acid derivatives | Takao Takaya, Hisashi Takasugi, Takashi Masugi, Hideaki Yamanaka | 1988-03-15 |
| 4705851 | Process for the preparation of 3-phosphoniummethyl-3-cephem compounds | Takao Takaya, Hisashi Takasugi, Takashi Masugi, Hideaki Yamanada | 1987-11-10 |
| 4622318 | 3-(substituted-ethenyl or ethynyl-thiomethyl) cephems | Takao Takaya, Zenzaburo Tozuka, Nobuyoshi Yasuda | 1986-11-11 |
| 4609730 | 7-[substituted imino-2-(2-aminothiazol-4-yl)-acetamido]-3(2,2-dihalovinyl or ethynyl)-3-cephem-4-carboxylic acid (syn isomers), having antimicrobial activities | Takao Takaya, Takashi Masugi | 1986-09-02 |
| 4585860 | 7-acylamino-3-vinylcephalosporanic acid derivatives useful for treatment of infectious diseases in human beings and animals | Takao Takaya, Hisashi Takasugi, Takashi Masugi, Hideaki Yamanaka | 1986-04-29 |
| 4559334 | 7-Substituted-3-vinyl-3-cephem compounds and processes for production of the same | Takao Takaya, Hisashi Takasugi, Takashi Masugi, Hideaki Yamanaka | 1985-12-17 |
| 4487927 | 3-Phosphonium and 3-phosphoranylidenecephems | Takao Takaya, Hisashi Takasugi, Takashi Masugi, Hideaki Yamanaka | 1984-12-11 |
| 4462999 | 7-Acylamino-3-substituted cephalosporanic acid derivatives and processes for the preparation thereof | Takao Takaya, Hisashi Takasugi, Takashi Masugi, Hideaki Yamanaka | 1984-07-31 |
| 4423213 | 7-Acylamino-3-vinylcephalosporanic acid derivatives and processes for the preparation thereof | Takao Takaya, Hisashi Takasugi, Takashi Masugi, Hideaki Yamanaka | 1983-12-27 |
| 4409214 | 7-Acylamino-3-vinylcephalosporanic acid derivatives and processes for the preparation thereof | Takao Takaya, Hisashi Takasugi, Takashi Masugi, Hideaki Yamanaka | 1983-10-11 |
| 4409215 | 7-Acylamino-3-substituted cephalosporanic acid derivatives and processes for the preparation thereof | Takao Takaya, Hisashi Takasugi, Takashi Masugi, Hideaki Yamanaka | 1983-10-11 |