Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11591543 | Aroma chemical compositions containing 3,5-diethyl-2-propyl-tetrahydropyran and/or unsaturated derivatives thereof | Nicolas MARION, Rolf Pinkos, Stefan RUEDENAUER, Florian Garlichs, Ralf Pelzer +7 more | 2023-02-28 |
| 11518749 | Method for the continuous separation by distillation of mixtures that contain morpholine (MO), monoaminodiglycol (ADG), ammonia, water and methoxyethanol (MOE) | Oliver Bussmann, Eva Koch, Manfred Heilig, Joerg Pastre, Johann-Peter Melder | 2022-12-06 |
| 11214555 | Method for depleting 2-methoxyethanol (MOE) | Eva Koch, Oliver Bussmann, Joerg Pastre, Johann-Peter Melder | 2022-01-04 |
| 8987517 | Process for preparing cycloaliphatic amines | Willi Doell | 2015-03-24 |
| 8940250 | Method of conveying liquids | Willi Gilcher, Juergen Morell | 2015-01-27 |
| 8828267 | Use of a stereoisomer mixture of diaminomethylcyclohexane as a hardener for epoxy resins | Daniela Malkowsky, Stephan Goettke | 2014-09-09 |
| 8822718 | Process for preparing isocyanates by thermally cleaving carbamates | Michael Bock, Eckhard Stroefer, Robert Baumann, Axel Franzke | 2014-09-02 |
| 7994361 | Moderate-pressure gas phase phosgenation | Andreas Woelfert, Christian Mueller, Eckhard Stroefer, Markus Weber, Carsten Knoesche | 2011-08-09 |
| 7084297 | Production of isocyanates in the gaseous phase | Andreas Woelfert, Christian Mueller, Eckhard Stroefer, Markus Weber, Carsten Knoesche | 2006-08-01 |
| 6790995 | Preparation of primary and secondary amines from nitriles | Michael Hullmann, Arthur Hohn, Frank Funke, Frank Ohlbach, Till Gerlach | 2004-09-14 |
| 6750365 | Thermal dissociation of allophanates | Gerhard Laqua, Matthias Klotzer, Volker Krase, Peter Pfab, Andreas Schmidt | 2004-06-15 |
| 6723880 | Preparation of secondary amines from primary amines | Peter Neumann, Johann-Peter Melder, Christoph Benisch, Arthur Hohn | 2004-04-20 |
| 6592832 | Method for producing highly pure lithium salts | Holger Friedrich, Bernd Leutner | 2003-07-15 |
| 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 |
| 6525223 | Preparation of secondary amines from nitriles | Michael Hullmann, Arthur Hohn, Frank Funke, Frank Ohlbach, Till Gerlach | 2003-02-25 |
| 6403845 | Preparation of pentanediols from alkoxydihydropyrans | Peter Wahl, Jan Nouwen, Karsten Eller, Arthur Hohn, Jürgen Hunger | 2002-06-11 |
| 5788743 | Selective separation and recovery of chlorine from gas mixtures | Otto Watzenberger | 1998-08-04 |
| 5785819 | Distillation column for separating a liquid mixture into a plurality of pure fractions | Gerd Kaibel, Manfred Stroezel | 1998-07-28 |