| 8193385 |
Method for producing isocyanates |
Matthias Kloetzer, Heinrich-Josef Blankertz, Gunter Georgi, Eckhard Stroefer, Volker Krase +1 more |
2012-06-05 |
| 8044166 |
Process for preparing pentamethylene 1,5-diisocyanate |
Martin Fiene, Eckhard Stroefer, Wolfgang Siegel, Stephan Freyer, Oskar Zelder |
2011-10-25 |
| 7997066 |
Method for monitoring the functionality of the heating of a catalytic converter situated in an exhaust system of an internal combustion engine |
Gerd Kraemer, Stefan Uhl, Wolf Kiefer |
2011-08-16 |
| 7060861 |
Method for hydrating poly-or monomethylol alkanals |
Matthias Dernbach, Michael Koch, Hagen Weigl, Steffen Maas |
2006-06-13 |
| 6809224 |
Method for the separation of formaldehyde from a reaction mixture containing polyols by the addition of solvents before and/or during the distillation |
Matthias Dernbach, Detlef Kratz, Achim Stammer |
2004-10-26 |
| 6740726 |
Polyisocyanates as coating components for coating means rich in solids |
Jochem Henkelmann, Heiko Maas, Armin Stamm, Heinz-Peter Rink, Werner-Alfons Jung +1 more |
2004-05-25 |
| 6692616 |
Method for purifying trimethylolpropane, which is produced by hydrogenation, by means of continuous distillation |
Matthias Dernbach, Detlef Kratz, Achim Stammer, Harald Rust |
2004-02-17 |
| 6586641 |
Method for the decomposition of high boiling by-products produced in the synthesis of polyhydric alcohols |
Matthias Dernbach, Detlef Kratz, Achim Stammer |
2003-07-01 |
| 6586642 |
Color number improvement in polyhydric alcohols by hydrogenation |
Matthias Dernbach, Detlef Kratz, Achim Stammer, Mathias Haake, Michael Koch |
2003-07-01 |
| 6469214 |
Process for the preparation of ethanolamines |
Johann-Peter Melder |
2002-10-22 |
| 6447870 |
Optical storage disk blank and method for manufacturing the disk blank |
Herbert Beck |
2002-09-10 |
| 6448457 |
Method for hydrogenating carbonyl compounds |
Michael Hesse, Detlef Kratz, Marc Walter, Manfred Sauerwald |
2002-09-10 |
| 6417353 |
Preparing amines |
Frank Funke, Joachim Wulff-Doring, Wolfgang Siegel, Andreas Kramer, Johann-Peter Melder +4 more |
2002-07-09 |
| 6353141 |
Functionalized cyclopentene-derived oligomer mixtures, their preparation and their use |
Edgar Zeller, Bernhard Geissler, Michael Roper, Guido Voit |
2002-03-05 |
| 6323371 |
Process for the preparation of alkanolamines having improved color quality |
Gunther Ruider, Karl-Heinz Ross, Johann-Peter Melder, Frank Gutschoven, Philip Buskens |
2001-11-27 |
| 6291715 |
Process for the preparation of alkanolamines having improved color quality |
Gunther Ruider, Karl-Heinz Ross, Boris Breitscheidel, Heike Maier, Sylvia Huber |
2001-09-18 |
| 6292720 |
Trimming process for adapting a simulation system to an automatically controlled reference system |
Thomas Meyer |
2001-09-18 |
| 6207865 |
Method for the hydrogenation of carbonyl compounds |
Boris Breitscheidel, Marc Walter, Detlef Kratz, Manfred Sauerwald |
2001-03-27 |
| 6187971 |
Method for producing polyalcohols |
Detlef Kratz, Achim Stammer, Guido Voit |
2001-02-13 |
| 6187957 |
Preparation of amines |
Gerald Meyer, Frank Funke, Detlef Kratz, Marc Walter, Michael Hesse |
2001-02-13 |
| 6046359 |
Catalysts for the amination of alkylene oxides, alcohols, aldehydes and ketones |
Joachim Wulff-Doring, Johann-Peter Melder, Guido Voit, Gutshoven Frank, Wolfgang Harder |
2000-04-04 |
| 5958825 |
Catalysts for the amination of alkylene oxides, alcohols, aldehydes and ketones |
Joachim Wulff-Doring, Johann-Peter Melder, Guido Voit, Frank Gutschoven, Wolfgang Harder |
1999-09-28 |
| 5916838 |
Catalysts for the amination of alkylene oxides, alcohols, aldehydes and ketones |
Joachim Wulff-Doring, Johann-Peter Melder, Guido Voit, Gutshoven Frank, Wolfgang Harder |
1999-06-29 |
