Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681830 | Opioid compounds | Kwen-Jen Chang, Ann O. Davis, Robert W. McNutt, Jr., Mark A. Collins, Michael J. Bishop | 1997-10-28 |
| 5658908 | Opioid diarylmethylpiperazines and piperdines | Kwen-Jen Chang, Grady Evan Boswell, Mark A. Collins, Ann O. Davis, Robert W. McNutt, Jr. | 1997-08-19 |