Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870168 | 3-Unsaturated alkyl cephems from 3-triflyl cephems | Stephen R. Baker, Chester Sapino | 1989-09-26 |
| 4847373 | Production of 3-allyl- and 3-butenyl-3-cephems | Stephen R. Baker, Chester Sapino | 1989-07-11 |