Issued Patents All Time
Showing 26–50 of 80 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7332634 | Method for the continuous purification by distillation of 1,2-propylene glycol that accumulates during the synthesis of propylene oxide without coupling products | Hans-Georg Goebbel, Joaquim Henrique Teles, Peter Rudolf | 2008-02-19 |
| 7294326 | Hydrocyanic acid consisting of formamide | Wolfgang Siegel, Guenther Achhammer, Anton Negele, Helmuth Menig, Wilhelm Ruppel +3 more | 2007-11-13 |
| 7217818 | Purification of caprolactam | Rolf Fischer, Hermann Luyken, Andreas Ansmann, Christoph Benisch, Stefan Maixner +1 more | 2007-05-15 |
| 7115781 | Iron-containing oxidic material suitable for use as hydrogenation catalyst precursor | Andreas Ansmann, Christoph Benisch, Rolf Fischer, Stefan Maixner, Johann-Peter Melder +1 more | 2006-10-03 |
| 7091153 | Hydrogenation catalyst | Guido Voit, Rolf Fischer, Andreas Ansmann, Hermann Luyken, Martin Merger +2 more | 2006-08-15 |
| 7084310 | Method for the continuous production of propylene glycol | Hans-Georg Goebbel, Joaquim Henrique Teles, Peter Rudolf | 2006-08-01 |
| 7026493 | Method for producing an epoxide | Joaquim Henrique Teles, Alwin Rehfinger, Anne Berg, Peter Rudolf, Norbert Rieber | 2006-04-11 |
| 6972075 | Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine | Hermann Luyken, Frank Ohlbach, Rolf Fischer, Johann-Peter Melder, Andreas Ansmann +1 more | 2005-12-06 |
| 6958304 | Method for regenerating a zeolite catalyst | Joaquim Henrique Teles, Alwin Rehfinger, Anne Wenzel, Norbert Rieber, Ulrich Müller +1 more | 2005-10-25 |
| 6905997 | Method for generating catalysts | Frank Ohlbach, Hermann Luyken, Andreas Ansmann, Rolf Fischer, Johann-Peter Melder | 2005-06-14 |
| 6896772 | Method for separating ammonia from solutions containing caprolactam and ammonia | Hermann Luyken, Frank Ohlbach, Stefan Maixner, Rolf Fischer, Johann-Peter Melder +1 more | 2005-05-24 |
| 6884743 | Catalyst for epoxidation reactions | Ulrich Müller, Georg Krug, Hans-Georg Gobbel, Peter Rudolf, Joaquim Henrique Teles | 2005-04-26 |
| 6881853 | Method for producing propylene oxide | Joaquim Henrique Teles, Alwin Rehfinger, Anne Berg, Peter Rudolf, Norbert Rieber | 2005-04-19 |
| 6878798 | Method for producing a polymer, using caprolactam | Frank Ohlbach, Helmut Winterling, Andreas Ansmann, Rolf Fischer, Johann-Peter Melder +2 more | 2005-04-12 |
| 6852199 | Method for separating pentenenitrile isomers | Tim Jungkamp, Dagmar Pascale Kunsmann-Keitel, Robert Baumann, Wolfgang Siegel | 2005-02-08 |
| 6852669 | Hydrogenation catalyst | Guido Voit, Rolf Fischer, Andreas Ansmann, Hermann Luyken, Martin Merger +2 more | 2005-02-08 |
| 6849162 | Method for the production of propylene oxide | Joaquim Henrique Teles, Alwin Rehfinger, Anne Wenzel, Norbert Rieber, Peter Rudolf | 2005-02-01 |
| 6828457 | Method for reducing the content of an unsaturated amine in a mixture containing an amine and a nitrile | Frank Ohlbach, Christoph Benisch, Hermann Luyken, Andreas Ansmann, Rolf Fischer +2 more | 2004-12-07 |
| 6815388 | Method for activating passivated iron | Frank Ohlbach, Rolf Fischer, Hermann Luyken, Johann-Peter Melder, Martin Merger +1 more | 2004-11-09 |
| 6815527 | Continuous method for producing polyamides from aminonitriles | Helmut Winterling, Rolf Fischer, Wolfgang Loth | 2004-11-09 |
| 6756503 | Method for the production of propylene oxide | Joaquim Henrique Teles, Alwin Rehfinger, Anne Wenzel, Norbert Rieber, Peter Rudolf | 2004-06-29 |
| 6727371 | Method for converting an organic compound with a hydroperoxide | Ulrich Müller, Joaquim Henrique Teles, Norbert Rieber, Andreas Walch, Alwin Rehfinger +2 more | 2004-04-27 |
| 6712942 | Working up a mixture comprising alkene and oxygen | Joaquim Henrique Teles, Alwin Rehfinger, Norbert Rieber, Werner Hefner, Anne Wenzel +1 more | 2004-03-30 |
| 6686465 | Preparation of cyclic lactams | Frank Ohlbach, Andreas Ansmann, Rolf Fischer, Hermann Luyken, Stefan Maixner +1 more | 2004-02-03 |
| 6683179 | Preparation of caprolactam | Dieter Baumann, Rolf Fischer, Eberhard Fuchs, Johann-Peter Melder, Frank Ohlbach | 2004-01-27 |