Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4948796 | Piperazine derivative or its salt, process for producing the same and pharmaceutical composition comprising the same as active ingredient | Toru Hiraiwa, Kenji Takeda, Joji Nakano, Kunikazu Furuhata, Makoto Takata +2 more | 1990-08-14 |