Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880829 | Substituted dipeptide amides #3 | Donald W. Hansen, Jr., Barnett S. Pitzele, Robert W. Hamilton | 1989-11-14 |
| 4847241 | Fluorenyl substituted tyrosyl dipeptide amides which are useful in treating pain | Donald W. Hansen, Jr., Robert W. Hamilton, Barnett S. Pitzele | 1989-07-11 |
| 4822775 | Phenyl substituted dipeptide amides | Donald W. Hansen, Jr., Barnett S. Pitzele, Robert W. Hamilton | 1989-04-18 |
| 4797470 | O-substituted tyrosyl dipeptide amides | Barnett S. Pitzele, Donald W. Hansen, Jr., Robert W. Hamilton, Daniel R. Pilipauskas | 1989-01-10 |