Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5144027 | Cephalosporins, process for producing the same, intermediates thereof and process for producing the intermediates | Hiroshi Sadaki, Hirokazu Narita, Hiroyuki Imaizumi, Takihiro Inaba, Tatsuo Hirakawa +4 more | 1992-09-01 |
| 4851535 | Nicotinic acid derivatives | Yozo Todo, Tetsuo Yamafuji, Katsuyuki Nagumo, Isao Kitayama, Hideyoshi Nagaki +4 more | 1989-07-25 |
| 4704459 | Process for producing 1-substituted aryl-1,4-dihydro-4-oxonaphthyridine derivatives, and processes for producing the intermediates | Yozo Todo, Tetsuo Yamafuji, Katsuyuki Nagumo, Isao Kitayama, Hideyoshi Nagaki +4 more | 1987-11-03 |
| 4698352 | 4-oxo-1,4-dihydronicotinic acid derivatives, salts thereof, and antibacterial agents containing the same | Hirokazu Narita, Jun Nitta, Shunjiro Misumi, Hideyoshi Nagaki, Isao Kitayama +5 more | 1987-10-06 |
| 4673738 | Novel intermediates of cephalosporins and process for producing 7-(substituted or unsubstituted amino)-3-substituted methyl-.DELTA..sup.3 -cephem-4-carboxylic acids | Hiroshi Sadaki, Hirokazu Narita, Hiroyuki Imaizumi, Takihiro Inaba, Tatsuo Hirakawa +4 more | 1987-06-16 |
| 4489072 | Cephalosporins | Hiroshi Sadaki, Hirokazu Narita, Hiroyuki Imaizumi, Takihiro Inaba, Tatsuo Hirakawa +4 more | 1984-12-18 |