Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5109132 | Process for the preparation of 3-exomethylene cepham derivatives | Jan Verweij, Hendrik A. Witkamp | 1992-04-28 |
| 5053501 | Preparation of 3-exomethylenecepham sulfoxides and 2-chlorosulfinylazetidinones using molecular sieves | Jagdfish C. Kapur, Roland P. Bezemer | 1991-10-01 |
| 4985554 | Process for the preparation of 3-exomethylene cepham derivatives | Jan Verweij, Hendrik A. Witkamp | 1991-01-15 |
| 4182870 | Preparation of 3-bromomethyl-3-cephem sulfoxides | Cornelis A. Bruynes | 1980-01-08 |