Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4684641 | 7-hydroxyaminocephalosporin antibiotics | Colin W. Greengrass, Thomas T. Howarth | 1987-08-04 |
| 4684642 | 7-Hydroxyaminocephalosporin antibiotics | Colin W. Greengrass, Thomas T. Howarth | 1987-08-04 |