Issued Patents All Time
Showing 26–50 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9328064 | Method for producing isocyanates in the gas phase | Rainer Bruns, Wolfgang Lorenz, Andreas Rausch, Tim Loddenkemper | 2016-05-03 |
| 9309184 | Method for producing diamines and polyamines of the diphenylmethane series | Thomas Knauf, Wolfgang Lorenz, Richard Adamson, Karsten Becker | 2016-04-12 |
| 9284267 | Process for the preparation of urethanes | Andreas Jacob, Stephan Klein, Jörg Sundermeyer, Fuming Mei | 2016-03-15 |
| 9279029 | Method for producing light-coloured polyisocyanates | Thomas Mueller, Christoph Guertler, Axel Scherer-Werke, Henning Vogt, Walter Leitner | 2016-03-08 |
| 9272988 | Method for producing diisocyanates by phosgenating diamine suspensions | Jörg Laue, Christian Steffens, Jens Krause, Werner Kilian, Marc Seekamp +1 more | 2016-03-01 |
| 9199924 | Process for the preparation of urethanes | Felix Gärtner, Andreas Jacob, Jörg Sundermeyer, Stephan Klein | 2015-12-01 |
| 9102594 | Method for producing isocyanates in the gas phase | Rainer Bruns, Wolfgang Lorenz, Andreas Rausch, Tim Loddenkemper | 2015-08-11 |
| 8513453 | Process for preparing aromatic carbamates | Stephan Klein, Anton Vidal-Ferran, Elisenda Reixach, Francese Xavier Rius-Ruiz | 2013-08-20 |
| 8450516 | Catalyst for producing N-substituted carbamates, and the preparation and application of the same | Stephan Klein, Hongchao Li, Xinkui Wang, Qifeng Li, Maoqing Kang | 2013-05-28 |
| 8450518 | Method for preparing a carbamate, a catalyst applied in the method, a method for preparing the catalyst and use thereof | Youquan Deng, Liguo Wang, Yubo Ma, Xiaoguang Guo, Stephan Klein +1 more | 2013-05-28 |
| 8445713 | Catalyst for the synthesis of organic carbonates, process for preparing the same and application thereof | Stephan Klein, Zhiping Zhou, Xinkui Wang, Junwei Wang, Maoqing Kang | 2013-05-21 |
| 8338634 | Catalyst for the synthesis of alkyl carbamates, the method for preparing the same and the use thereof | Youquan Deng, Yubo Ma, Liguo Wang, Xiaoguang Guo, Shiguo Zhang +3 more | 2012-12-25 |
| 8022200 | Process for the preparation of liquid, storage-stable organic isocyanates of low color number containing carbodiimide and/or uretonimine groups | Manfred Schmidt, Hans-Georg Pirkl, Nobuhiro Kamiyama, Shinichi Murakami, Tetsuo Harada | 2011-09-20 |
| 7825276 | Process for the preparation of liquid, storage-stable organic isocyanates containing carbodiimide and/or uretoneimine groups | Marcus Steinwegs | 2010-11-02 |
| 7813839 | Process for controlling a production process | Jochen Mahrenholtz, Gerhard Then, Sabine Pegel, Jun Wang, Erman Sevinc +1 more | 2010-10-12 |
| 7745659 | Process for the production of liquid, storage-stable organic isocyanates with a low colour index having carbodiimide- and/or uretone imine groups | Manfred Schmidt, Hans-Georg Pirkl, Torsten Hagen | 2010-06-29 |
| 7714148 | Process for the preparation of liquid, storage-stable organic isocyanates containing carbodiimide and/or uretoneimine groups | Marcus Steinwegs | 2010-05-11 |
| 7692042 | Process for preparing aniline | Markus Dugal, Franz-Ulrich Von Gehlen, Andre Lago, Peter Lehner, Benie Marotz | 2010-04-06 |
| 7662989 | Process for the preparation of liquid, storage-stable organic isocyanates containing carbodiimide and/or uretonimine groups | Marcus Steinwegs | 2010-02-16 |
| 7488850 | Process for removing compounds containing phenolic hydroxy groups from aromatic amines | Knut Sommer, Markus Dugal, Ido Schwarz, Peter Lehner, Stephan Schubert +1 more | 2009-02-10 |
| 7368595 | Process for the production of light-colored isocyanates | Torsten Hagen, Christian Steffens, Jeffrey Bolton | 2008-05-06 |
| 7253321 | Process for the preparation of polyamines of the diphenylmethane series at a low degree of protonation | Torsten Hagen, Daniel Koch, Hans-Georg Pirkl, Fritz Pohl, Rudolf Uchdorf +1 more | 2007-08-07 |
| 7205439 | Process for the preparation of di- and polyamines of the diphenylmethane series | Torsten Hagen, Stefan Peter Grabowski, Richard Adamson, Daniel Koch | 2007-04-17 |
| 7186857 | Process for the preparation of di- and polyamines of the diphenylmethane series | Heinz Muller, Stefan Peter Grabowski | 2007-03-06 |
| 7041776 | Process for the production of polyisocyanates of the diphenylmethane series by phosgenation of non-neutralized polyamine of the diphenylmethane series | Daniel Koch, Hans-Georg Pirkl, Torsten Hagen | 2006-05-09 |