Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5543490 | Process for the preparation of polysuccinimide, polyaspartic acid and salts thereof, and the use of these compounds | Torsten Groth, Winfried Joentgen, Nikolaus Muller, Heinz-Joachim Rother, Paul Wagner +1 more | 1996-08-06 |
| 4407762 | Process for the isolation of 1-naphthylamine-4,8-disulphonic acid | Heinz U. Blank, Horst Behre, Werner Mentzel | 1983-10-04 |
| 4348336 | Process for the isolation of 1-naphthylamine-4,6- and 1-naphthylamine-4,7-disulphonic acid | Heinz U. Blank, Horst Behre | 1982-09-07 |
| 4338261 | Process for the preparation of 1-naphthylamine-4,6-disulphonic acid and 1-naphthylamine-2,4,6-trisulphonic acid | Heinz U. Blank, Horst Behre, Werner Mentzel | 1982-07-06 |