Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8455698 | Hydroxy- and aldehyde functional compounds | Anastasiya Rybak, Dominik Geisker | 2013-06-04 |
| 8394996 | Method for producing aldehyde functional compounds | Anastasiya Rybak, Dominik Geisker, Peter Hannen, Martin Roos | 2013-03-12 |
| 5777111 | Process for the preparation of 3-(N-Aryl-amino)-propyl-2'-sulfato-ethylsulfonyl compounds | Christian Schumacher, Werner Russ | 1998-07-07 |
| 5756757 | Process for the preparation of 3-hydroxy-N-benzimidazolon-5-yl-2-naphthamide in the high purity required of azo pigments | Heinrich Volk, Rudolf Neeb | 1998-05-26 |
| 5695529 | Liquid formulation of N-(2-sulfatoethyl)piperazine sulfate | Andreas Schrell, Heinz-Georg Kautz | 1997-12-09 |
| 5672738 | Process for the preparation of 3-(N-aryl-amino)-propyl-2'-sulfatoethyl-sulfonyl compounds | Christian Schumacher, Werner Russ | 1997-09-30 |
| 5596099 | Process for the preparation of N-(2-sulfatoethyl)-piperazine in high purity | Heinz-Georg Kautz | 1997-01-21 |
| 5563271 | N-(2-sulfatoethyl)piperazine sulfate and its preparation | Heinz-Georg Kautz, Andreas Schrell | 1996-10-08 |
| 5557005 | Process for preparing 3-chloroanthranilic alkyl esters of high purity from 3-chloroanthranilic acid | G unther Semler | 1996-09-17 |
| 5550286 | Process for the preparation of aromatic carboxamides from aromatic carboxylic acids and urea | Yani Christidis | 1996-08-27 |
| 5446201 | Di(3-(2-chloroethylsulfonyl)-1-propyl)amine hydrochloride and a process for its preparation | Heinrich Angenendt, Wolfram Schams | 1995-08-29 |
| 5436370 | Process for the preparation of 3-nitrobenzenesulfonyl chloride | Reinhard Wagner | 1995-07-25 |
| 5416234 | Process for the preparation of 3'-aminopropyl 2-sulfatoethyl sulfone | Heinrich Angenendt, Georg Grotsch | 1995-05-16 |
| 5395914 | Polyarylene ethers containing xanthone units, a process for their preparation, and their use | Peter Wilharm, Thomas Weller | 1995-03-07 |
| 5387711 | Process for preparing 3-sulfobenzoic acid and alkali metal salts thereof | — | 1995-02-07 |
| 5371281 | Process for preparing alkali metal 3-sulfobenzoates | — | 1994-12-06 |
| 5292966 | Process for the preparation of 2-nitro-3, 6-dichlorophenol | Heinz-Georg Kautz | 1994-03-08 |
| 5281740 | Process for the preparation of 3'-aminopropyl 2-sulfatoethyl sulfone | Heinrich Angenendt | 1994-01-25 |
| 5278341 | N-acylaminoalkyl 2-hydroxyethyl sulfides and a process for their preparation | Heinrich Angenendt, Peter Mischke | 1994-01-11 |
| 5227527 | Process for the preparation of 3'-aminopropyl 2-chloroethyl sulfone semisulfate | Heinrich Angenendt | 1993-07-13 |
| 5136043 | Process for the preparation of aromatic sulfonyl chlorides | Wolfgang Tronich | 1992-08-04 |
| 5124489 | Process for preparing phenethanol ethers by the reduction of corresponding phenylglyoxal acetals | John R. Durrwachter, Graham N. Mott, Werner H. Mueller | 1992-06-23 |
| 5003079 | Process for the preparation of benzimidazolones | Gunther Semler | 1991-03-26 |