Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11274072 | Process for the continuous preparation of 1,2-propylene diamine (1,2-PDA) and dimethyldiethylene triamine (DMDETA) | Christian Eidamshaus, Johann-Peter Melder, Joerg Pastre | 2022-03-15 |
| 10252912 | Separation of a phosgene- and hydrogen chloride-comprising stream | Heiner Schelling, Torsten Mattke, Kai Thiele | 2019-04-09 |
| 9126904 | Process for preparing isocyanates by phosgenation of amines in the liquid phase | Torsten Mattke, Markus Hiller | 2015-09-08 |
| 8841480 | Process for the preparation of light-colored iocyanates of a diphenylmethanediisocyanate series | Heiner Schelling, Eckhard Stroefer, Jon S. Speier, Byoung-Yeon Kim | 2014-09-23 |
| 8759585 | Two-stage process for cost-effective deposition of homogeneous catalysts in MDA synthesis | Markus Siegert, Torsten Mattke, Tilmann Steinmetz, Filip Nevejans | 2014-06-24 |
| 8088944 | Method for the purification of isocyanates | Andreas Woelfert, Eckhard Stroefer, Heinrich-Josef Blankertz | 2012-01-03 |
| 7851648 | Method for the continuous production of isocyanates | Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Rene Leuthold +4 more | 2010-12-14 |
| 7709679 | Process for simultaneously preparing 4,4′-diphenylmethanediamine and diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanates | Michael Bock, Filip Deberdt, Johnny Moors | 2010-05-04 |
| 7659430 | Method for separating hydrogen chloride and phosgene | Andreas Woelfert, Carsten Knoesche, Martin Sesing, Eckhard Stroefer, Hans-Martin Polka +1 more | 2010-02-09 |
| 7592479 | Reprocessing of reaction material discharged from phosgenation reactors | Eckhard Stroefer, Stephan Scholl, Martin Sohn, Andreas Woelfert, Jan Peter Bredehoeft | 2009-09-22 |
| 7584629 | Separation of a substance mixture consisting of hydrogen chloride and phosgene | Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, 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, Ulrich Penzel, Peter Van Den Abeel +3 more | 2009-04-28 |
| 7358388 | Method for the purification of isocyanates | Andreas Woelfert, Eckhard Stroefer, Heinrich-Josef Blankertz | 2008-04-15 |
| 7342134 | Method for the distillative recovery of toluylenediamine | Carsten Knoesche, Martin Sohn, Ulrich Penzel, Gunter Georgi, Wolfgang Mackenroth +4 more | 2008-03-11 |