Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5614220 | Pharmaceutical preparation controlled to release medicinal active ingredient at targeted site in intestinal tract | Yoshiyuki Hirakawa, Hiroyuki Yoshino, Katsuji Uemura, Eiji Fukui | 1997-03-25 |