Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7511176 | Process for the preparation of toluenediamines by catalytic hydrogenation of dinitrotoluenes | Fritz Pohl, Lars Padeken, Bernd Pennemann, Friedhelm Steffens, Gerhard Wiechers | 2009-03-31 |
| 7504533 | Process for the production of isocyanates | Matthias Böhm, Bill Brady, Donald L. Pferdehirt | 2009-03-17 |
| 7495136 | Process for the production of dinitrotoluene | Fritz Pohl, Juergen Muennig, Bernd Pennemann, Gerhard Wiechers | 2009-02-24 |
| 6953869 | Process for working up secondary components in the preparation of dinitrotoluene | Jurgen Munnig, Dietmar Wastian, Berthold Keggenhoff | 2005-10-11 |
| 6936741 | Process for working up the waste water obtained in the preparation of dinitrotoluene | Jurgen Munnig, Dietmar Wastian, Berthold Keggenhoff | 2005-08-30 |
| 6835459 | Conductive organic coatings | Andreas Kunz, Eva Wilke | 2004-12-28 |
| 6479103 | Conductive organic coatings | Winfried Wichelhaus, Andreas Kunz, Wolfgang Krey | 2002-11-12 |
| 6332949 | Method for upgrading used sulfuric acids | Heiko Beckhaus, Jurgen Munnig, Karl-Heinz Schumacher | 2001-12-25 |
| 5777119 | Process for the preparation of 2,3-dihalogenoquinoxalines | Jens Uwe Zarnack, Bernd Diesselkamper, Jorg-Michael Borchers | 1998-07-07 |
| 5038612 | Ultrasonic measuring device | Wolfgang Thelen, Klaus Templin, Joachim Löhr | 1991-08-13 |