Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4407761 | Process for the production of .omega.-amino-1-hydroxyalkylidene-1,1-bisphosphonic acid | Helmut Blum | 1983-10-04 |
| 4327039 | Process for the production of 3-amino-1-hydroxypropane-1,1-diphosphonic acid | Helmut Blum | 1982-04-27 |
| 4267108 | Hydroxyalkane diphosphonic acids | Helmut Blum, Hans-Ulrich Hempel | 1981-05-12 |