Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700930 | 4-substituted azetidinones as precursors to 2-substituted-3-carboxy carbapenem antibiotics and a method of producing them | Gregg Feigelson, Carl Bernard Ziegler | 1997-12-23 |
| 5656753 | 4-substituted azetidinones as precursors to 2-substituted-3-carboxy carbapenem antibiotics and a method of producing them | Gregg Feigelson, Carl Bernard Ziegler | 1997-08-12 |