Issued Patents All Time
Showing 25 most recent of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7767852 | Method for the separation of acids from chemical reaction mixtures by means of ionic fluids | Martin Volland, Verena Seitz, Matthias Maase, Miguel Flores, Rainer Papp +7 more | 2010-08-03 |
| 7351339 | Method for the separation of acids from chemical reaction mixtures by means of ionic fluids | Matthias Maase, Klemens Massonne, Ralf Noe, Michael Bartsch, Wolfgang Siegel +4 more | 2008-04-01 |
| 7319161 | Method for producing cyclohexane dicarboxylic acids and the derivatives thereof | Ralf Noe, Hartmut Hibst, Melanie Maas-Brunner, Boris Breitscheidel, Gerd Kaibel +5 more | 2008-01-15 |
| 6888021 | Hydrogenation of benzenepolycarboxylic acids or derivatives thereof using a catalyst containing macropores | Melanie Brunner, Arnd Bottcher, Boris Breitscheidel, Jochem Henkelmann, Lucien Thil +1 more | 2005-05-03 |
| 6495714 | Method for producing alkanesulfonic acids | Hans-Josef Sterzel, Matthias Eiermann, Eva Freudenthaler | 2002-12-17 |
| 6423861 | Method of producing dimethyl sulfite | Hans-Josef Sterzel, Christian Tragut, Eva Freudenthaler | 2002-07-23 |
| 6284917 | Method for hydrogenating benzene polycarboxylic acids or derivatives thereof by using a catalyst containing macropores | Melanie Brunner, Arnd Bottcher, Boris Breitscheidel, Jochem Henkelmann, Lucien Thil +1 more | 2001-09-04 |
| 6042799 | Coproduction of acetylene and hydrocyanic acid from acrylonitrile | Michael Henningsen, Manfred Julius, Wolf Stegmaier | 2000-03-28 |
| 6013843 | Continuous industrial production of unsaturated aliphatic aldehydes in a tube bundle reactor | Werner Aquila, Hartwig Fuchs, Otto Worz, Wilhelm Ruppel | 2000-01-11 |
| 5233078 | Preparation of dialkyl malonates | Ludwig Schuster | 1993-08-03 |
| 5149884 | Tube bundle reactor, use thereof in exothermic organic reactions, and preparation of ketones and aldehydes using same | Karl Brenner, Wilhelm Ruppel, Otto Woerz, Hans-Juergen Scheiper, Werner Aquila +1 more | 1992-09-22 |
| 4940805 | Preparation of 1,4-butanediol or tetrahydrofuran or both | Rolf Fischer, Hans-Juergen Gosch, Wolfgang Harder, Klaus-Dieter Malsch, Manfred Eggersdorfer +5 more | 1990-07-10 |
| 4891435 | Preparation of 4,4-dimethyltetrahydrofuran-2,3-dione | Manfred Eggersdorfer | 1990-01-02 |
| 4831166 | Preparation of alpha-substituted upsilon-butyrolactones | Heinz Eckhardt, Walter Gramlich, Walter F. Best | 1989-05-16 |
| 4806670 | Preparation of .alpha.-substituted .beta.-dicarbonyl and .beta.-cyanocarbonyl compounds | Walter Gramlich, Gerd Heilen | 1989-02-21 |
| 4740646 | Preparation of indanes | Erhard Henkes, Herbert Mayr, Wilhelm Striepe, Rudolf Pock | 1988-04-26 |
| 4684743 | Preparation of alpha-substituted .beta.-dicarbonyl, .beta.-cyano-carbonyl and .beta.-dicyano compounds | Walter Gramlich, Gerd Heilen | 1987-08-04 |
| 4532337 | Preparation of 3-formyl-5,6-dihydro-2H-pyran | Heinz Eckhardt, Norbert Goetz, Gerd Heilen | 1985-07-30 |
| 4521602 | Preparation of pyridines or pyrroles from .alpha.,.omega.-dinitriles | Walter Rebafka, Gerd Heilen, Wolfgang Franzischka | 1985-06-04 |
| 4518785 | Malondialdehyde tetraalkylacetals and their preparation | Heinz Eckhardt, Wolfgang Rohr | 1985-05-21 |
| 4503261 | Preparation of glyoxal | Wolfgang Sauer, Heinz Engelbach | 1985-03-05 |
| 4440960 | Continuous preparation of 3-alkyl-buten-1-als | Wolfgang Sauer, Werner Aquila, Wolfgang Hoffmann, Karl Brenner | 1984-04-03 |
| 4374274 | Preparation of .alpha.-methylsubstituted carbonyl compounds | Gerd Heilen, Walter Gramlich | 1983-02-15 |
| 4324725 | Preparation of 5-(2,2-dihalovinyl)-4,4-dialkyl-tetrahydro-furan-2-ones | Rudolf Kropp, Martin Fischer | 1982-04-13 |
| 4320062 | Preparation of 5-(2,2,2-trihaloethyl)-dialkyl-tetrahydrofuran-2-ones | Rudolf Kropp, Martin Fischer | 1982-03-16 |