Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870169 | Intermediates for beta-lactam antibiotics | David A. Evans | 1989-09-26 |
| 4820816 | 3-trifuoromethylsulfonyloxy-substituted 1-carbacephalosporins as intermediates for antibiotics | David A. Evans | 1989-04-11 |