Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6436441 | Hydrogel-forming sustained-release preparation | Kazuhiro Sako, Hiroshi Nakashima, Toyohiro Sawada, Akira Okada | 2002-08-20 |
| 6368629 | Colon-specific drug release system | Shunsuke Watanabe, Hitoshi Kawai, Masataka Katsuma | 2002-04-09 |