Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5068442 | Method for maintaining the activity of zeolite catalysts | Takeyuki Fujita, Kiyonobu Niwa, Takeshi Inagaki, Yuko Nikaido | 1991-11-26 |
| 4582936 | Process for producing dimethylamine in preference to mono- and trimethylamines by gas phase catalytic reaction of ammonia with methanol | Takeyuki Fujita, 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 | Takeyuki Fujita, Michio Fukatsu, Junsuke Yagi | 1986-03-25 |
| 4485261 | Process for producing methylamines | Michio Fukatsu | 1984-11-27 |