Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837317 | Process for the preparation of 6-[D(-)alpha-(4-ethyl-2,3-dioxopiperazin-1-ylcarbonylamino)-alpha-phenyl acetamido]-penicillanic acid and intermediates useful in this process | — | 1989-06-06 |