Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12391557 | Method for producing phosgene | Torsten Mattke, Gerhard Olbert, Jochen Gauer, Kai Thiele, Koenraad VANDEWALLE +1 more | 2025-08-19 |
| 8614352 | Method for producing color-stable MDA and MDI | Eckhard Stroefer, Heiner Schelling, Robert Reinhardt, Michael Zoellinger, Daniel Breuninger +2 more | 2013-12-24 |
| 7584629 | Separation of a substance mixture consisting of hydrogen chloride and phosgene | Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Juergen Pallasch +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, Hans-Juergen Pallasch +3 more | 2009-04-28 |
| 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 | Ulrich Penzel, Volker Scharr, Dieter Starosta, Hilmar Boesel, Eckhard Ströfer +8 more | 2003-06-10 |