Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696296 | Diphosphines and process for their preparation | Dieter Regnat | 1997-12-09 |
| 5684182 | Sulfonated diphosphines and a process for their preparation | Ahmed M. Tafesh, Dieter Regnat, Hans-Jerg Kleiner | 1997-11-04 |
| 5661174 | Guanidinealkyl-1,1-bisphosphonic acid derivatives, process for their preparation and their use | Hans-Jochen Lang, Jurgen K. Sandow, Anne-Marie Moura | 1997-08-26 |