Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4962229 | Olefinic diphosphonic acids, a process for their production, their use as thresholders, and complexing compositions containing them | Helmut Blum | 1990-10-09 |
| 4908138 | Hydroxyacetonitrile diphosphonic acid, a process for its production, and its use | Helmut Blum | 1990-03-13 |
| 4892679 | Oxa-alkane polyphosphonic acids, their use as thresholders, and complexing compositions containing these compounds | Helmut Blum | 1990-01-09 |
| 4880575 | Olefinic diphosphonic acids, a process for their production, their use as thresholders and complexing compositions containing them | Helmut Blum | 1989-11-14 |
| 4876339 | Process for synthesis of azacycloalkane-2,2-diphosponic acids | Helmut Blum | 1989-10-24 |
| 4719050 | Diphosponylated oxonitriles, processes and uses therefor, and compositions containing them | Helmut Blum | 1988-01-12 |
| 4624947 | 4-dimethylamino-1-hydroxybutane-1,1-diphosphonic acid, salts thereof, and processes therefor | Helmut Blum | 1986-11-25 |