Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4344827 | Process for working up nitric acid | Bernd Thelen, Karl-Werner Thiem, Rutger Neeff | 1982-08-17 |
| 4261908 | Process for isolating aromatic dinitro compounds | Bernd Schroeder, Bernd Thelen, Karl-Werner Thiem | 1981-04-14 |