Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6140321 | Polymorphs of donepezil hydrochloride and process for production | Akio Imai, Hideaki Watanabe, Yasushi Ishihama, Akiyo Ohtsuka, Tomohide Tanaka | 2000-10-31 |
| 5985864 | Polymorphs of donepezil hydrochloride and process for production | Akio Imai, Hideaki Watanabe, Yasushi Ishihama, Akiyo Ohtsuka, Tomohide Tanaka +1 more | 1999-11-16 |