Issued Patents All Time
Showing 1–25 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594132 | 7-acylamino-3-substituted cephalosporanic acid derivatives | Takao Takaya, Hisashi Takasugi, Hideaki Yamanaka, Kohji Kawabata | 1997-01-14 |
| 5252731 | Cephalosporin intermediates | Takao Takaya, Hisashi Takasugi, Hideaki Yamanaka, Kohji Kawabata | 1993-10-12 |
| 5110921 | 7-acylamino-3-vinylcephalosporanic acid derivatives | Takao Takaya, Hisashi Takasugi, Hideaki Yamanaka, Kohji Kawabata | 1992-05-05 |
| 5079369 | Syn-isomer of 3,7-disubstituted-3-cephem-4-carboxylic acid compounds and processes for the preparation thereof | Takao Takaya, Hisashi Takasugi, Hiromu Kochi | 1992-01-07 |
| 5026695 | 7-acylamino-3-substituted cephalosporanic acid derivatives | Takao Takaya, Hisashi Takasugi, Hideaki Yamanaka, Kohji Kawabata | 1991-06-25 |
| 4960889 | 7-acylamino-3-vinylcephalosporanic acid derivatives and processes for the preparation thereof | Takao Takaya, Hisashi Takasugi, Hideaki Yamanaka, Kohji Kawabata | 1990-10-02 |
| 4904652 | 7-acylamino-3-substituted cephalosporanic acid derivatives | Takao Takaya, Hisashi Takasugi, Hideaki Yamanaka, Kohji Kawabata | 1990-02-27 |
| 4877873 | Syn-isomer of 3,7-disubstituted-3-cephem-4-carboxylic acid compounds and processes for the preparation thereof | Takao Takaya, Hisashi Takasugi, Hiromu Kochi | 1989-10-31 |
| 4871860 | Syn-isomer of 3,7-disubstituted-3-cephem-4-caroxylic acid compounds and processes for the preparation thereof | Takao Takaya, Hisashi Takasugi, Hiromu Kochi | 1989-10-03 |
| 4804752 | Syn-isomer of 3,7-disubstituted-3-cephem-4-carboxylic acid compounds and processes for the preparation thereof | Takao Takaya, Hisashi Takasugi, Hiromu Kochi | 1989-02-14 |
| 4731443 | 7-acylamino-3-vinylcephalosporanic acid derivatives | Takao Takaya, Hisashi Takasugi, Hideaki Yamanaka, Kohji Kawabata | 1988-03-15 |
| 4719206 | Cephem compounds | Takao Takaya, Takashi Ogino, Hisashi Takasugi, Hideaki Yamanaka | 1988-01-12 |
| 4705851 | Process for the preparation of 3-phosphoniummethyl-3-cephem compounds | Takao Takaya, Hisashi Takasugi, Hideaki Yamanada, Kohji Kawabata | 1987-11-10 |
| 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, Kohji Kawabata | 1986-09-02 |
| 4594446 | 2-alkoxyimino-3,3-dialkoxy-butyrates and derivatives | Ikuo Ueda, Takao Takaya, Masakazu Kobayashi, Hisashi Takasugi, Hiromu Kochi +1 more | 1986-06-10 |
| 4585860 | 7-acylamino-3-vinylcephalosporanic acid derivatives useful for treatment of infectious diseases in human beings and animals | Takao Takaya, Hisashi Takasugi, Hideaki Yamanaka, Kohji Kawabata | 1986-04-29 |
| 4584290 | Cephem compounds | Takao Takaya, Takashi Ogino, Hisashi Takasugi, Hideaki Yamanaka | 1986-04-22 |
| 4559334 | 7-Substituted-3-vinyl-3-cephem compounds and processes for production of the same | Takao Takaya, Hisashi Takasugi, Hideaki Yamanaka, Kohji Kawabata | 1985-12-17 |
| 4544653 | Syn-isomer of 3,7-disubstituted-3-cephem-4-carboxylic acid compounds and processes for the preparation thereof | Takao Takaya, Hisashi Takasugi, Hiromu Kochi | 1985-10-01 |
| 4518774 | 3-Cephem intermediates | Ikuo Ueda, Takao Takaya, Masakazu Kobayashi, Hisashi Takasugi, Hiromu Kochi +1 more | 1985-05-21 |
| 4500709 | Thiinyl and oxothiolyl derivatives | Takao Takaya, Takashi Ogino, Kiyoshi Tsuji | 1985-02-19 |
| 4493833 | Syn-isomer of 3,7-disubstituted-3-cephem-4-carboxylic acid compounds | Takao Takaya, Hisashi Takasugi, Hiromu Kochi | 1985-01-15 |
| 4487927 | 3-Phosphonium and 3-phosphoranylidenecephems | Takao Takaya, Hisashi Takasugi, Hideaki Yamanaka, Kohji Kawabata | 1984-12-11 |
| 4487768 | Cephem compounds | Takao Takaya, Hisashi Takasugi, Kenzi Miyai | 1984-12-11 |
| 4487767 | 7-[Amino or carboxy substituted oxyimino]-3-[amino or alkoxy substituted heterocyclic thiomethyl] cephalosporin derivatives | Takao Takaya, Hisashi Takasugi, Hiromu Kochi | 1984-12-11 |