Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8895783 | Monitoring of the stoichiometric ratio in the reaction of nitroaromatics with hydrogen | Andreas Raichle, Stefanie Haase, Holgar Braunsberg, Johannes Buettner, Samuel Neto | 2014-11-25 |
| 8829232 | Process for preparing aromatic isocyanates | Torsten Mattke, Andreas Wölfert, Johannes Jacobs, Tsung-Chieh Cheng, Kerstin Heinen +6 more | 2014-09-09 |
| 8759569 | Process for the production of isocyanates, preferably diisocyanates and polyisocyanates with solvent recirculation | Heiner Schelling, Eckhard Stroefer, Matthias Eiermann, Jon S. Speier, Kai Thiele +1 more | 2014-06-24 |
| 8609899 | Process for preparing toluenediamine by hydrogenation of dinitrotoluene | Andreas Raichle, Joana Coelho Tsou, Samuel Neto, Steffen Oehlenschlaeger, Michael Zoellinger +3 more | 2013-12-17 |
| 8519179 | Method of measuring entry of water into phosgene-conducting plants | Heiner Schelling, Eckhard Stroefer, Dirk Hablawetz, Dave Beckwith, Kai Thiele +6 more | 2013-08-27 |
| 7928270 | Process for distillatively removing dinitrotoluene from process wastewater from the preparation of dinitrotoluene by nitrating of toluene with nitrating acid | Ruediger Fritz, Holger Allardt, Johannes Adam, Anne-Kathrin Merten | 2011-04-19 |
| 7851648 | Method for the continuous production of isocyanates | Martin Sohn, Eckhard Stroefer, Filip Nevejans, Hans-Juergen Pallasch, Rene Leuthold +4 more | 2010-12-14 |
| 7595424 | Method for producing aromatic amines or aliphatic amino alcohols | Dominic Vanoppen, Frederik van Laar, Thomas Beuermann, Georg Krug, Steffen Oehlenschlaeger +4 more | 2009-09-29 |
| 7584629 | Separation of a substance mixture consisting of hydrogen chloride and phosgene | Martin Sohn, Eckhard Stroefer, Filip Nevejans, Hans-Juergen Pallasch, Peter Van Den Abeel +3 more | 2009-09-08 |
| 7524405 | Method for separating out solvent from a reaction mixture resulting from an isocyanate synthesis and for purifying this solvent | Martin Sohn, Eckhard Stroefer, Filip Nevejans, Hans-Juergen Pallasch, Peter Van Den Abeel +3 more | 2009-04-28 |
| 7468461 | Method for the production of amines | Frederik van Laar, Ekkehard Schwab, Steffen Oehlenschlaeger, Hartwig Voss, Wolfgang Mackenroth +2 more | 2008-12-23 |
| 7408086 | Ni/TiO2 hydrogenation catalyst | Dominic Vanoppen, Ekkehard Schwab, Joern Mueller, Gunter Georgi, Bernd Weidner +2 more | 2008-08-05 |
| 7342134 | Method for the distillative recovery of toluylenediamine | Carsten Knoesche, Martin Sohn, Hans-Juergen Pallasch, Gunter Georgi, Wolfgang Mackenroth +4 more | 2008-03-11 |
| 7230130 | Process for preparing methylenedianiline and methylenebis (phenylisocyanate) | Eckhard Ströfer, Jan Jacobs, Wilfried Seyfert, Hans Volkmar Schwarz, Olaf Schweers +1 more | 2007-06-12 |
| 7091383 | Method for the production of amines | Dominic Vanoppen, Ekkehard Schwab, Frederick van Laar, Hartwig Voss, Steffen Oehlenschlaeger +3 more | 2006-08-15 |
| 6900348 | Light isocyanates, method for producing them and use thereof | Martin Reif, Peter van den Abeel, Filip Nevejans, Hans Volkmar Schwarz, Volker Scharr | 2005-05-31 |
| 6896401 | Method and device for reducing byproducts in the mixture of educt streams | Andreas Wölfert | 2005-05-24 |
| 6867324 | Method and device for the continuous production of organic mono or polyisocyanates | Andreas Wölfert | 2005-03-15 |
| 6831192 | Process for preparing methylenedianiline and methylenebis(phenyl isocyanate) | Eckhard Ströfer, Jan Jacobs, Wilfried Seyfert, Hans Volkmar Schwarz, Olaf Schweers +1 more | 2004-12-14 |
| 6576788 | METHOD FOR PRODUCING MIXTURES CONSISTING OF DIPHENYLMETHANE DIISOCYANATES AND POLYPHENYLENE-POLYMETHYLENE-POLYISOCYANATES CONTAINING A REDUCED AMOUNT OF CHLORINATED SECONDARY PRODUCTS AND WITH A REDUCED IODINE COLOR INDEX | Volker Scharr, Dieter Starosta, Hilmar Boesel, Eckhard Ströfer, Joachim Pfeffinger +8 more | 2003-06-10 |
| 6433219 | Method for the production of methylenedi(phenylamine and methylenedi(phenyl isocyanate) | Eckhard Ströfer, Jan Jacobs, Wilfried Seyfert, Hans Volkmar Schwarz, Olaf Schweers +1 more | 2002-08-13 |
| 6350911 | Method for producing amines | Michael Sander, Hans Volkmar Schwarz, Eckhard Ströfer, Dieter Stützer, Jörn Müller +5 more | 2002-02-26 |
| 6140539 | Preparation of amines | Michael Sander, Dietmar Peisker, Klaus Werner, Holger Braunsberg, Gunter Georgi | 2000-10-31 |