Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6160169 | Preparation of amine salts of 4-nitrotoluene-2-sulfonic acid | Rudolf Bermes, Armin Haag, Hellmut Kast | 2000-12-12 |
| 5892105 | Preparation of amine salts of 4-nitrotoluene-2-sulfonic acid | Rudolf Bermes, Armin Haag, Hellmut Kast | 1999-04-06 |