Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5359058 | Cephem derivatives | Jan Verweij, Henri G. J. Hirs, Hendrik A. Witkamp, Everardus J. A. M. Leenderts, Jan J. DeKoning | 1994-10-25 |
| 5164494 | Cephalosporin derivatives | Hendrik A. Witkamp, Jan J. DeKoning, Jan Verwej, Everardus J. A. M. Leenderts | 1992-11-17 |
| 4921954 | Process for the preparation of cephem compounds | Hendrik A. Witkamp, Jan Verweij, Jan J. DeKoning, Everardus J. A. M. Leenderts | 1990-05-01 |
| 4695627 | Cephalosporin deoxygenation process | Jan Verweij, Henri G. J. Hirs, Gerardus J. Van Veen, Jan Kalter, Peter W. Henniger | 1987-09-22 |
| 4318852 | Sodium amoxicillin solvate | Herwarth Heitman, Johannes K. van der Drift, Everardus J. A. M. Leenderts | 1982-03-09 |