Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5227531 | Process for the preparation of fluorobenzaldehydes | Hans Joachim Metz | 1993-07-13 |
| 5208376 | Process for the continuous preparation of 3,3'-dichloro-benzidine dihydrochloride | Kurt Habig, Konrad Baessler | 1993-05-04 |
| 5041671 | Process for the preparation 4-chloro-2,5-dimethoxy-aniline | Kurt Habig | 1991-08-20 |
| 4968845 | Process for the preparation of halogen-containing aromatic compounds | Joachim Hackenbruch, Theodor Papenfuhs, Gunter Siegemund | 1990-11-06 |
| 4952697 | Process for the preparation of 2-nitro-3-aminopyridine, and the intermediates which are formed in the reaction | Siegfried Planker, Gunter H. Herbst, deceased, Ulrike M. Herbst, Bettina S. Herbst, Georg Schaeffer | 1990-08-28 |
| 4855517 | Process for preparing aromatic bromine compounds | Hans Joachim Metz | 1989-08-08 |
| 4847354 | Shaped structure of aromatic copolyamide from aromatic diamine mixture | Gunter Keil, Franz Jakob, Friedrich Herold | 1989-07-11 |
| 4234484 | Process for the preparation of cyclic enamides | Michael Mitzlaff | 1980-11-18 |