Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12151997 | Method for preparing an amine hydrochloride suspension | Michael Merkel, Frank Gerhartz, Stefan Hirschfeld | 2024-11-26 |
| 11389791 | Method for regenerating a toxified catalyst containing ruthenium or ruthenium compounds | Andre RITTERMEIER, Michael Alan Venz, Thomas BURBACH, Timm Schmidt, Frank Gerhartz +1 more | 2022-07-19 |
| 10703713 | Process for preparing an isocyanate | Jürgen Arras, Markus Dugal | 2020-07-07 |
| 10676448 | Method for producing TDI-trimerisates with high purity | Josef Sanders, Andreas Hecking, Reinhard Halpaap, Frank Richter, Oswald Wilmes +3 more | 2020-06-09 |
| 10435353 | Method for producing isocyanates | Joachim Zechlin, Friedhelm Steffens, Dietmar Wastian | 2019-10-08 |
| 10189945 | Method for producing light-coloured TDI-polyisocyanates | Josef Sanders, Andreas Hecking, Reinhard Halpaap, Frank Richter, Oswald Wilmes +2 more | 2019-01-29 |
| 10131641 | Method for producing TDI-trimerisates with high purity | Josef Sanders, Andreas Hecking, Reinhard Halpaap, Frank Richter, Oswald Wilmes +3 more | 2018-11-20 |
| 9695115 | Method for producing isocyanates | Rainer Bruns, Wolfgang Lorenz, Andreas Rausch, Stefan Wershofen | 2017-07-04 |
| 9593075 | Method for producing isocyanates | Rainer Bruns, Wolfgang Lorenz, Andreas Rausch, Stefan Wershofen | 2017-03-14 |
| 9328064 | Method for producing isocyanates in the gas phase | Rainer Bruns, Wolfgang Lorenz, Andreas Rausch, Stefan Wershofen | 2016-05-03 |
| 9242860 | Process for the oxidation of a gas mixture containing hydrogen chloride | Michel Haas, Rainer Bruns | 2016-01-26 |
| 9102594 | Method for producing isocyanates in the gas phase | Rainer Bruns, Wolfgang Lorenz, Andreas Rausch, Stefan Wershofen | 2015-08-11 |
| 9029595 | Method for working up distillation residues from isocyanate production | Friedhelm Steffens, Rainer Bellinghausen, Hartwig Kempkes | 2015-05-12 |
| 8889578 | Processes for regenerating sulfur-poisoned, ruthenium and/or ruthenium compound-containing catalysts | Timm Schmidt, Frank Gerhartz, Walther Müller | 2014-11-18 |
| 7612234 | Processes for separating carbon monoxide from a hydrogen chloride-containing gas | Michel Haas, Dietmar Wastian, Bernd Rüffer | 2009-11-03 |
| 7202378 | Process for producing 5-nitro-3,4-dihydro-1(H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate | Joachim Zechlin, Kai Verkerk, Dietmar Wastian, Katrin Joschek, Wilfried Pinke +2 more | 2007-04-10 |
| 7202384 | Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate | Joachim Zechlin, Kai Verkerk, Dietmar Wastian, Kartin Joschek, Wilfried Pinke +2 more | 2007-04-10 |
| 7057071 | Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1-5-naphthalenediamine and 1,5-naphthalene diisocyanate | Joachim Zechlin, Kai Verkerk, Dietmar Wastian, Katrin Joschek, Wilfried Pinke +2 more | 2006-06-06 |