Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33778 | 1,3-dithietane-2-carboxylic acid penicillin and cephalosporin derivatives | Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Noriaki Nagano, Atsuki Yamazaki +3 more | 1991-12-24 |
| RE32491 | Process for the preparation of 7.alpha.-methoxy-7.beta.-(1,3-diethietane-2-carboxyamido)cephalosporanic acid derivatives | Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Noriaki Nagano, Atsuki Yamazaki | 1987-09-01 |
| 4414153 | 1,3-Dithietane-2-carboxylic acid penicillin and cephalosporin derivatives | Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Noriaki Nagano, Atsuki Yamazaki +3 more | 1983-11-08 |
| 4404373 | Process for the preparation of 7.alpha.-methoxy-7.beta.-(1,3-diethietane-2-carboxamido)cephalosporanic acid derivatives | Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Noriaki Nagano, Atsuki Yamazaki | 1983-09-13 |
| 4263432 | 7.alpha.-Methoxy-7.beta.-(1,3-dithietane-2-carboxamido)cephalosporanic acid derivatives | Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Noriaki Nagano, Atsuki Yamazaki | 1981-04-21 |
| 4198339 | 1,3-Dithietane-2-carboxylic acids and the preparation thereof | Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Noriaki Nagano, Atsuki Yamazaki +3 more | 1980-04-15 |