Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7227029 | Method for the continuous production of N-methyl-2-pyrrolidone (NMP) | Martin Rudloff, Erhard Henkes, Helmut Schmidtke, Rolf Fischer, Manfred Julius +2 more | 2007-06-05 |
| 7164031 | Method for the production of 2-pyrrolidone | Martin Rudloff, Erhard Henkes, Helmut Schmidtke, Rolf Fischer, Manfred Julius +2 more | 2007-01-16 |
| 6143934 | Preparation of amines from olefins over boron beta-zeolites | Uwe Dingerdissen, Rudolf Kummer, Ulrich Müller, Jürgen Herrmann, Karsten Eller | 2000-11-07 |
| 5900508 | Preparation of amines from olefins over zeolites of the type PSH-3, MCM-22, SSZ-25 or mixtures thereof | Karsten Eller, Ulrich Müller, Rudolf Kummer | 1999-05-04 |
| 5886226 | Process for producing amines from olefins on zeolites of types SSZ-33, CIT-1 or mixtures thereof | Karsten Eller, Rudolf Kummer | 1999-03-23 |
| 5817871 | Preparation of amines | Uwe Dingerdissen, Gunter Lauth, Andreas Henne, Karsten Eller, Eugen Gehrer | 1998-10-06 |
| 5786510 | Preparation of amines from olefins over crystalline oxides based on aluminum phosphates and having faujasite structure | Karsten Eller, Rudolf Kummer | 1998-07-28 |
| 5739405 | Preparation of amines from olefins over zeolites of the type SSZ-37 | Karsten Eller, Rudolf Kummer | 1998-04-14 |
| 5728900 | Process for the selective hydrogenation of butyne-1,4-diol to butene-2-diol-1,4 | Franz Josef Brocker, Rainer Becker, Volkmar Menger | 1998-03-17 |
| 5714644 | Process and catalyst for the selective hydrogenation of butynediol to butenediol | Matthias Irgang, Volkmar Menger, Ernest Miesen, Fritz Graf | 1998-02-03 |
| 5530127 | Preparation of amines | Wolfgang Reif, Lothar Franz, Volkmar Menger, Rainer Becker, Rudolf Kummer +1 more | 1996-06-25 |
| 5521139 | Palladium-containing fixed-bed catalyst for the hydrogenation of butyne-1,4-diol to butene-2-diol-1,2 | Franz Josef Brocker, Rainer Becker, Volkmar Menger | 1996-05-28 |
| 5453208 | Oxidation of ammonium ions and organic carbon in wastewaters | Karl Baur, Thomas Papkalla, Ulrich Kanne | 1995-09-26 |
| 5030328 | Method of separating .gamma.-butyrolactone from mixtures containing diethyl succinate | Rolf Fischer, Erwin Brunner, Rudolf Weigand | 1991-07-09 |
| 4946029 | Purification of carboxylic esters which contain aldehydes, acetals and/or unsaturated compounds | Gerhard Frank, Hubert Lendle, Wilfried Seyfert | 1990-08-07 |
| 4861895 | Treatment of aqueous solutions obtained in the carbalkoxylation of olefinically unsaturated compounds | Werner Bertleff, Robert Maerkl, Peter Magnussen, Gebhard Kuehn | 1989-08-29 |
| 4810798 | Recovery of pyridine or methylpyridines or mixtures thereof from methyl butanedicarboxylate containing reaction mixtures | Hubert Lendle, Paul Panitz, Wilfried Seyfert | 1989-03-07 |
| 4777284 | Continuous preparation of carbalkoxy-containing aliphatic compounds | Robert Maerkl, Werner Bertleff, Gebhard Kuehn, Paul Panitz, Rudolf Kummer +1 more | 1988-10-11 |
| 4681946 | Preparation of nicotinamide | Karl Baur, Volker Diehl, Hans Hellbach, Erwin Brunner | 1987-07-21 |
| 4533757 | Continuous hydroformylation of olefinically unsaturated compounds | Rudolf Kummer, Wolfgang Richter, Kurt Schwirten | 1985-08-06 |