Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5298492 | Diamino acid derivatives as antihypertensives | Bernard R. Neustadt, Elizabeth M. Smith | 1994-03-29 |
| 5091431 | Phosphodiesterase inhibitors | Ronald J. Doll | 1992-02-25 |
| 4971972 | Phosphodiesterase inhibitors having an optionally substituted purine derivative portion and a benzo- or cyclopenta-furan portion | Ronald J. Doll, Charles V. Magatti | 1990-11-20 |