Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9505711 | Method for purifying mixtures comprising 4,4′-methylenediphenyl diisocyanate | Michael Bock, Johannes Jacobs, Kai Thiele | 2016-11-29 |
| 8981155 | Process for preparing aromatic amines | Stefanie Haase, Dusko Kadijevic, Michael Zoellinger, Andreas Raichle, Alexander Schocker +3 more | 2015-03-17 |
| 8529771 | Acidic sludge adsorption of DNT wastewaters | Ruediger Fritz, Renate Hempel, Michael Zoellinger, Doris Zschieschang, Ina Homann +4 more | 2013-09-10 |
| 7928270 | Process for distillatively removing dinitrotoluene from process wastewater from the preparation of dinitrotoluene by nitrating of toluene with nitrating acid | Ulrich Penzel, Ruediger Fritz, Holger Allardt, Johannes Adam | 2011-04-19 |
| 5965231 | Gas mixtures for thermal insulation | Udo Rotermund, Norbert Krollmann | 1999-10-12 |