Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5773659 | Process for producing dimethylamine | Katsumasa Nishijima, Takeshi Narita, Toshio Nakamura, Kiyonobu Niwa | 1998-06-30 |
| 5688854 | Production of methylamines | Takeyuki Fujita, Kiyonobu Niwa, Kazumoto Ogura | 1997-11-18 |
| 5232728 | Processed food made of iodine-enriched wheat flour | Takashi Miki, Seiki Harada | 1993-08-03 |
| 4582936 | Process for producing dimethylamine in preference to mono- and trimethylamines by gas phase catalytic reaction of ammonia with methanol | Yoshiro Ashina, Takeyuki Fujita, 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, Takeyuki Fujita, Junsuke Yagi | 1986-03-25 |
| 4485261 | Process for producing methylamines | Yoshiro Ashina | 1984-11-27 |