| 10807084 |
Silica-based zinc catalysts, their preparation and use in the alkoxycarbonylation of amines |
Stefan Wershofen, Gernot Jaeger, Anton Vidal Ferran, Jose Luis Nuñez Rico |
2020-10-20 |
| 10703713 |
Process for preparing an isocyanate |
Tim Loddenkemper, Jürgen Arras |
2020-07-07 |
| 7692042 |
Process for preparing aniline |
Franz-Ulrich Von Gehlen, Stefan Wershofen, Andre Lago, Peter Lehner, Benie Marotz |
2010-04-06 |
| 7488850 |
Process for removing compounds containing phenolic hydroxy groups from aromatic amines |
Knut Sommer, Ido Schwarz, Stefan Wershofen, Peter Lehner, Stephan Schubert +1 more |
2009-02-10 |
| 7456303 |
Catalyst |
Markus Weisbeck, Marie-Therese Heinen, Jorg Schmitt, Gerhard Wegener |
2008-11-25 |
| 7435853 |
Process for the production of di- and polyamines of the diphenylmethane series |
Stefan Peter Grabowski, Aurel Wolf |
2008-10-14 |
| 7271116 |
Catalyst |
Markus Weisbeck, Marie-Therese Heinen, Jorg Schmitt, Gerhard Wegener |
2007-09-18 |
| 6770765 |
Catalyst |
Markus Weisbeck, Marie-Therese Heinen, Jorg Schmitt, Gerhard Wegener |
2004-08-03 |