Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5359058 | Cephem derivatives | Jan Verweij, Henri G. J. Hirs, Everardus J. A. M. Leenderts, Jan J. DeKoning, Herman H. Grootveld | 1994-10-25 |
| 5164494 | Cephalosporin derivatives | Jan J. DeKoning, Jan Verwej, Herman H. Grootveld, Everardus J. A. M. Leenderts | 1992-11-17 |
| 5109132 | Process for the preparation of 3-exomethylene cepham derivatives | Jan Verweij, Jan J. De Koning | 1992-04-28 |
| 4994454 | Cepham derivatives | Jan Verweij, Jan J. DeKoning | 1991-02-19 |
| 4985554 | Process for the preparation of 3-exomethylene cepham derivatives | Jan Verweij, Jan J. De Koning | 1991-01-15 |
| 4921954 | Process for the preparation of cephem compounds | Jan Verweij, Jan J. DeKoning, Herman H. Grootveld, Everardus J. A. M. Leenderts | 1990-05-01 |