Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5985864 | Polymorphs of donepezil hydrochloride and process for production | Akio Imai, Hideaki Watanabe, Takashi Kajima, Yasushi Ishihama, Akiyo Ohtsuka +1 more | 1999-11-16 |
| 4906411 | Process for producing 2-methyl-1,4-naphthoquinone | Atsushi Shinnaka | 1990-03-06 |