Issued Patents All Time
Showing 1–25 of 91 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6258984 | Process for the preparation of 4-alkylsulfonyl-1-alkyl-2-chlorobenzenes and similar compounds | Georg Folz | 2001-07-10 |
| 6001831 | Process for producing quinazoline derivatives | Ralf Pfirmann, Stefan Krause, Doris Neumann-Grimm | 1999-12-14 |
| 5990309 | 2-chloro-5-fluoro-4-morpholinonitrobenzene and 2-chloro-5-fluoro-4-morpholinoaniline | Thomas Schach | 1999-11-23 |
| 5973189 | Monoesters of carboxymethylene anthranilic acids and process for preparing the same | Ralf Pfirmann, Doris Neumann-Grimm, Stefan Krause | 1999-10-26 |
| 5945556 | Process for preparing N-carboxymethylene-4-chloro-anthranilic acid and its dialkyl esters | Ralf Pfirmann, Stefan Krause, Doris Neumann-Grimm | 1999-08-31 |
| 5917037 | Process for the preparation of n-carboxyalkyl-3-fluoro-4-dialkylaminoanilines | Thomas Schach | 1999-06-29 |
| 5874608 | Process for the preparation of esters of aromatic carboxylic acid | Ralf Pfirmann | 1999-02-23 |
| 5821385 | Process for the preparation of N-(2-carboxy-5-chloro-phenyl)glycine | Stefan Krause, Doris Neumann-Grimm | 1998-10-13 |
| 5811572 | Process for the preparation of N-carboxymethyleneanthranilic acid | Andreas Dierdorf, Stefan Krause, Doris Neumann-Grimm | 1998-09-22 |
| 5744628 | Process for the preparation of esters of aromatic carboxylic acids | Ralf Pfirmann | 1998-04-28 |
| 5723658 | Process for the preparation of salts of substituted or unsubstituted phthalic acids | Ralf Pfirmann | 1998-03-03 |
| 5712414 | Hydroxycarboxylic acid anilides | Andreas Dierdorf | 1998-01-27 |
| 5705680 | Process for the preparation of O-acylglycolanilides | Andreas Dierdorf | 1998-01-06 |
| 5693852 | Process for the preparation of o-acyloxycarboxanilides | Andreas Dierdorf, Siegfried Planker | 1997-12-02 |
| 5631403 | Process for the preparation of hydroxycarboxanilides | Andreas Dierdorf, Siegfried Planker | 1997-05-20 |
| 5616799 | Process for the preparation of glycoloylanilides | Siegfried Planker | 1997-04-01 |
| 5543550 | Process for the preparation of 5-fluoroanthranilic alkyl esters and/or 5-fluoroanthranilic acid | Jochen Rapp, Siegfried Planker, G unter Bartels | 1996-08-06 |
| 5523472 | Process for the preparation of 5-fluoroanthranilic acid | Freimund Rohrscheid, Jochen Rapp | 1996-06-04 |
| 5504264 | Process for preparing 1,3-difluorobenzene | Thomas Schach | 1996-04-02 |
| 5502260 | Process for preparing multiply fluorinated nitrobenzenes | Thomas Schach | 1996-03-26 |
| 5498807 | Process for the preparation of aromatic fluoro compounds | Thomas Schach | 1996-03-12 |
| 5498798 | 4-alkyl-3-chlorobenzenesulfinic acids, 4-alkyl-3-chlorobenzenesulfonylcarboxylic acids, 4-alkyl-3-chloroalkylsulfonylbenzenes and preparation thereof | Georg Folz | 1996-03-12 |
| 5498794 | Process for preparing fluoroanilines | Thomas Schach | 1996-03-12 |
| 5492875 | Catalyst for nucleophilic aromatic substitutions | Thomas Schach | 1996-02-20 |
| 5488152 | Process for the preparation of 4-alkoxy-3,5,6-trifluoro-phthalic acids and 3-alkoxy-2,4,5-trifluorobenzoic acids | Ralf Pfirmann | 1996-01-30 |