Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5208376 | Process for the continuous preparation of 3,3'-dichloro-benzidine dihydrochloride | Konrad Baessler, Klaus Warning | 1993-05-04 |
| 5041671 | Process for the preparation 4-chloro-2,5-dimethoxy-aniline | Klaus Warning | 1991-08-20 |
| 4987258 | 4,4'-diaminodiphenyl compounds, process for their preparation and their use | Klaus Hunger, Heinrich Frolich | 1991-01-22 |
| 4338473 | Method for removing nitrosation agent(s) from a nitrated aromatic compound | Konrad Baessler, Lothar Schulz, Heinz Schutte | 1982-07-06 |