Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7629490 | Process for hydrolysing cyclopropanecarboxylic esters to the free acid | Reinhard Langer, Paul Wagner | 2009-12-08 |
| 6888005 | 2-phenylbenzimidazole-5-sulphonic acid from isolated 3,4-diaminobenzenesulphonic acid and use thereof in cosmetic preparations | Gunter Rauchschwalbe, Wolfram Kissener, Klaus-Christian Paetz | 2005-05-03 |
| 6787666 | Process for the preparation of isolated 3,4-diaminobenzenesulphonic acid | Gunter Rauchschwalbe, Wolfram Kissener | 2004-09-07 |
| 6245157 | Use of polyaspartic acids in cleaner formulations with abrasive action | Manfred Gerlach, Bernhard Lehmann, Hartwig Wendt, Urban Recht | 2001-06-12 |
| 5756831 | Process for the preparation of 5-fluoro-2-nitrobenzoic acid | Wolfram Kissener, Jurgen Kuprat, Klaus-Christian Paetz | 1998-05-26 |
| 5567854 | Process for separating mixtures of nitrobenzaldehyde isomers | Wolfram Kissener, Achim Fessenbecker | 1996-10-22 |
| 4968835 | Process for the preparation of aminoaryl-sulphonic acids | Heinz U. Blank, Peter Schnegg | 1990-11-06 |
| 4788011 | Process for the preparation of chemical compounds obtained as solids from liquid starting substances | Roland Busse, Friedrich Durholz, Dietmar Mayer, Dorde Jovcic | 1988-11-29 |
| 4717514 | Process for preparing p-toluidine-2-sulphonic acid | Heinz U. Blank, Rolf Schimpf | 1988-01-05 |
| 4447368 | Process for the preparation of aminoarylsulphonic acids in sulfolene solvent | Heinz U. Blank, Peter Schnegg | 1984-05-08 |
| 4435336 | Process for the preparation of aromatic aminosulphonic acids | Heinz U. Blank, Peter Schnegg | 1984-03-06 |