Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |