Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870084 | Bicyclic benzo fused pyran compounds used for nausea treatment and prevention | Michael R. Johnson, Lawrence S. Melvin, Jr. | 1989-09-26 |
| 4863934 | Bicyclic benzo fused pyran compounds used for producing analgesia | Michael R. Johnson, Lawrence S. Melvin, Jr. | 1989-09-05 |
| 4841078 | Benzopyrans | Michael R. Johnson, Lawrence M. Sherman | 1989-06-20 |