Issued Patents All Time
Showing 26–50 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679826 | Process for the preparation of 2-chloroacrylonitrile | Franz-Josef Mais, Thomas Essert, Friedrich Durholz, Guido Steffan | 1997-10-21 |
| 5672719 | Process for the preparation of isobenzofurandiones | Josef Kasbauer | 1997-09-30 |
| 5672708 | Process for the preparation of N-arylaminoacrylic acid derivatives and the use of N-arylaminoacrylic acid derivatives thus prepared for the preparation of 4-quinolone-3-carboxylic acid derivatives | Gunter Rauchschwalbe, Bernhard Beitzke, Wolfgang Eymann | 1997-09-30 |
| 5670694 | Process for the preparation of 2,4-dichloro-5-fluorobenzonitrile and 2,6-dichloro-3-fluorobenzonitrile | Ferdinand Hagedorn, Reinhard Lantzsch | 1997-09-23 |
| 5659088 | Process for the preparation of 4-fluorothiophenol | Ferdinand Hagedorn, Wolfgang Eymann, Otto Neuner, Herbert Muller | 1997-08-19 |
| 5650542 | Process for the preparation of 2-chloro-6-nitrophenyl alkyl sulphides and novel 2-chloro-6-nitrophenyl alkyl sulphides | Ferdinand Hagedorn | 1997-07-22 |
| 5629441 | 2-(arylimino-methyl)-3-dialkylaminoacrylonitriles, a process for their preparation and their use | Helmut Kraus, Horst Behre | 1997-05-13 |
| 5591869 | Process for the preparation of methylene compounds and the novel compound 2-(2,4-Dichloro-5-fluorobenzyl)thiophene | Ferdinand Hagedorn | 1997-01-07 |
| 5585521 | Process for the preparation of alkylhydrazine salts | Wolfram Eichinger | 1996-12-17 |
| 5576463 | Process for the preparation of 2-nitrobenzaldehydes | Albert Schnatterer | 1996-11-19 |
| 5574188 | Process for the preparation of 4,6-diaminoresorcinol | Horst Behre, Heinz U. Blank, Uwe Heinz, Wolfgang Eymann | 1996-11-12 |
| 5545779 | Process for the hydrodehalogenation of halogenated benzenes | Michael Pies, Josef Kasbauer | 1996-08-13 |
| 5523481 | Process for the preparation of dialkyl dicarbonates | Michael Pies, Josef Kasbauer, Gebhard Merz | 1996-06-04 |
| 5502256 | Process for preparing 2,2'-dinitrodiphenyl disulphide | Ferdinand Hagedorn, Robert So/ llner, Rudolf Helm | 1996-03-26 |
| 5475142 | Process for preparing alkyl-(3-chlorophenyl)-sulphones | Stefan Antons, Werner Bussmann, Hartmut Richter | 1995-12-12 |
| 5475163 | Process for the preparation of 2,3-dichloro-nitrobenzene | Karl H. Neumann, Wolfram Kissener | 1995-12-12 |
| 5466881 | Process for preparing m-chloroaromatics | Michael Pies, Lothar Puppe, Josef Kasbauer | 1995-11-14 |
| 5463068 | Process for desulphurizing organic mercapto and/or disulphide compounds | Ferdinand Hagedorn, Hans-Joachim Traenckner | 1995-10-31 |
| 5436377 | Process for isolating M-dichlorobenzene from mixtures of dichlorobenzene isomers | Michael Pies, Kai Rohlk, Helmut Lahr | 1995-07-25 |
| 5384059 | Heat transfer fluid and process for its preparation | Alfons Klein, Rudolf Kron, Klaus-Christian Paetz | 1995-01-24 |
| 5382686 | Process for preparing nitrodiphenyl (thio) ethers | Ferdinand Hagedorn | 1995-01-17 |
| 5315049 | Process for the nuclear chlorination of aromatic hydrocarbons | Heinrich Schrage | 1994-05-24 |
| 5292975 | Process for decreasing the halogen content of polyhalogenated aromatics | Heinrich Schrage | 1994-03-08 |
| 5210343 | Process for the preparation of p-dichlorobenzene | Franz-Josef Mais | 1993-05-11 |
| 5157170 | Process for reacting polyhalogenated aromatic compounds with monohalogenated or nonhalogenated aromatic compounds | Franz-Josef Mais | 1992-10-20 |