Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885291 | 1-carba(dethia)-3-cephem derivatives | — | 1989-12-05 |
| 4855418 | Process for production of ceophalosporins | Gwendolyn K. Cook | 1989-08-08 |
| 4820832 | Process for preparing 3-unsubstituted cephalosporins and 1-carba(dethia)cephalosporins | Gwendolyn K. Cook | 1989-04-11 |