Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6800625 | Substituted 2,4-dihydro-pyrrolo[3,4-b]quinolin-9-one derivatives useful as phosphodiesterase inhibitors | Zhihua Sui | 2004-10-05 |
| 6686349 | Substituted tetracyclic pyrroloquinolone derivatives useful as phosphodiesterase inhibitors | Zhihua Sui | 2004-02-03 |