Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875922 | Pyrimidine derivatives | David A. Griffin, Raymond S. Gairns | 1989-10-24 |
| 4871389 | Heterocyclic compounds | Raymond Leo Sunley, David A. Griffin | 1989-10-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875922 | Pyrimidine derivatives | David A. Griffin, Raymond S. Gairns | 1989-10-24 |
| 4871389 | Heterocyclic compounds | Raymond Leo Sunley, David A. Griffin | 1989-10-03 |