Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4954518 | 4H-1-benzopyran-4-one derivative or its salt, process for producing the same and pharmaceutical composition comprising the same as active ingredient | Shuntaro Takano, Chosaku Yoshida, Takihiro Inaba, Keiichi Tanaka, Ryuko Takeno +2 more | 1990-09-04 |
| 4851535 | Nicotinic acid derivatives | Yozo Todo, Tetsuo Yamafuji, Katsuyuki Nagumo, Isao Kitayama, Mikako Miyajima +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, Mikako Miyajima +4 more | 1987-11-03 |
| 4698352 | 4-oxo-1,4-dihydronicotinic acid derivatives, salts thereof, and antibacterial agents containing the same | Hirokazu Narita, Yoshinori Konishi, Jun Nitta, Shunjiro Misumi, Isao Kitayama +5 more | 1987-10-06 |