Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688854 | Production of methylamines | Kiyonobu Niwa, Kazumoto Ogura, Michio Fukatsu | 1997-11-18 |
| 5068442 | Method for maintaining the activity of zeolite catalysts | Yoshiro Ashina, Kiyonobu Niwa, Takeshi Inagaki, Yuko Nikaido | 1991-11-26 |
| 4904803 | Process for producing N-substituted maleimides | Tuyoshi Irie, Yasuyuki Takayanagi, Takeshi Narita, Yuya Yano | 1990-02-27 |
| 4582936 | Process for producing dimethylamine in preference to mono- and trimethylamines by gas phase catalytic reaction of ammonia with methanol | Yoshiro Ashina, Michio Fukatsu, Junsuke Yagi | 1986-04-15 |
| 4578516 | Process for producing dimethylamine in preference to mono- or trimethylamine by vapor-phase catalytic reaction of methanol and ammonia | Yoshiro Ashina, Michio Fukatsu, Junsuke Yagi | 1986-03-25 |
| 4251460 | Process for production of dimethylformamide | Masaru Suto, Kazumoto Ogura | 1981-02-17 |