Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4454067 | Continuous production of azo pigments | Hartmut Behringer, Heinrich Rehberg | 1984-06-12 |
| 4439361 | Process for controlling diazotization reactions involving nitrous reactant by testing the air above the reaction batch for its content of nitrous gases and feeding nitrous reactant in accordance with said content | Hartmut Behringer, Heinrich Rehberg | 1984-03-27 |
| 4268437 | Continuous diazotization of amines | Hartmut Behringer | 1981-05-19 |
| 4252983 | Production of acetic anhydride and acetic acid from acetaldehyde | Heinz Erpenbach, Klaus Gehrmann, Alfred Hauser, Winfried Lork | 1981-02-24 |