Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8293075 | Method for the continuous separation by distillation of mixtures that contain morphonline (MO), monoaminodiglycol (ADG), ammonia and water by means of distillation | Helmut Schmidtke, Oliver Buβmann, Ralph Versch, Udo Rheude, Uwe Leyk +2 more | 2012-10-23 |
| 8246793 | Method for the continuous separation of mixtures comprising morpholine (MO), monoaminodiglycol (ADG), ammonia and water by means of distillation | Helmut Schmidtke, Oliver Buβmann, Ralph Versch, Udo Rheude, Uwe Leyk +2 more | 2012-08-21 |
| 8197646 | Processes for continuous fractional distillation of mixtures comprising morpholine, monoaminodiglycol, ammonia and water | Helmut Schmidtke, Oliver Buβmann, Ralph Versch, Udo Rheude, Uwe Leyk +2 more | 2012-06-12 |
| 7497931 | Distillative preparation of IPDA having a high cis/trans isomer ratio | Frank Funke, Thomas Hill, Jobst Rüdiger von Watzdorf, Wolfgang Mattmann, Wolfgang Harder +2 more | 2009-03-03 |
| 7256313 | Method for the production of isophorondiamine (ipda, 3-aminomethyl-3,5,5-trimethyl- cyclohexylamine) having a high cis/tran-isomer ratio | Frank Funke, Thomas Hill, Jobst Rüdiger von Watzdorf, Wolfgang Mattmann, Wolfgang Harder +2 more | 2007-08-14 |
| 7227029 | Method for the continuous production of N-methyl-2-pyrrolidone (NMP) | Martin Rudloff, Peter Stops, Helmut Schmidtke, Rolf Fischer, Manfred Julius +2 more | 2007-06-05 |
| 7164031 | Method for the production of 2-pyrrolidone | Martin Rudloff, Peter Stops, Helmut Schmidtke, Rolf Fischer, Manfred Julius +2 more | 2007-01-16 |
| 7060857 | Method for the production of isophorondiamine (ipda,3-aminomethyl-3,5,5-trimethylcyclohexylamine) | Frank Funke, Thomas Hill, Johann-Peter Melder, Ekkehard Schwab, Walter Himmel +2 more | 2006-06-13 |
| 6538139 | Preparation of pyrrole and pyridine | Martin Schäfer, Arnd Bottcher, Andreas Kramer, Arthur Hohn, Reinhard Kaczmarek | 2003-03-25 |
| 6207824 | Purification of N-substituted lactams | Gabriele Iffland, Jurgen Ciprian | 2001-03-27 |
| 5660601 | Polyetheramine-containing fuels for gasoline engines | Knut Oppenlander, Wolfgang H. H. Gunther, Andreas Henne, Volkmar Menger, Rainer Becker +3 more | 1997-08-26 |
| 4777195 | Curable polyester molding materials | Anton Hesse, Walter Trautmann | 1988-10-11 |
| 4740646 | Preparation of indanes | Klaus Halbritter, Herbert Mayr, Wilhelm Striepe, Rudolf Pock | 1988-04-26 |
| 4612306 | Oximinophosphoric acid derivatives and their use for controlling pests | Rainer Burstinghaus, Karl Kiehs, Heinrich Adolphi | 1986-09-16 |