Issued Patents All Time
Showing 26–50 of 244 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7164031 | Method for the production of 2-pyrrolidone | Martin Rudloff, Peter Stops, Erhard Henkes, Helmut Schmidtke, Manfred Julius +2 more | 2007-01-16 |
| 7154011 | Method for the production of 1,4- butanediol | Michael Hesse, Stephan Schlitter, Holger Borchert, Markus Schubert, Markus Rösch +4 more | 2006-12-26 |
| 7115781 | Iron-containing oxidic material suitable for use as hydrogenation catalyst precursor | Andreas Ansmann, Christoph Benisch, Peter Bassler, Stefan Maixner, Johann-Peter Melder +1 more | 2006-10-03 |
| 7091153 | Hydrogenation catalyst | Guido Voit, Peter Bassler, Andreas Ansmann, Hermann Luyken, Martin Merger +2 more | 2006-08-15 |
| 7064239 | Preparation of 1,6-hexanediol | Thomas Krug, Andrea Haunert, Michael Roper, Tilman Sirch, Wolfram Stuer | 2006-06-20 |
| 7041752 | Catalyst and method for the production of polytetrahydrofuran | Stephan Schlitter, Christoph Sigwart, Walter Dorflinger, Michael Hesse | 2006-05-09 |
| 6992226 | Single-stage method for producing toluene derivatives | Markus Rösch, Norbert Gotz | 2006-01-31 |
| 6972075 | Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine | Hermann Luyken, Frank Ohlbach, Johann-Peter Melder, Peter Bassler, Andreas Ansmann +1 more | 2005-12-06 |
| 6958404 | Method for the hydrogenation of maleic anhydride and related compounds in a fluid bed reactor | Holger Borchert, Stephan Schlitter, Michael Hesse, Frank Stein, Ralf-Thomas Rahn +2 more | 2005-10-25 |
| 6906228 | Method for catalytic hydrogenation on rhenium-containing active carbon carrier catalysts | Rolf Pinkos, Stephan Schunk, Joachim Wulff-Doring, Frank Stein, Thomas Nöbel +1 more | 2005-06-14 |
| 6905997 | Method for generating catalysts | Frank Ohlbach, Hermann Luyken, Andreas Ansmann, Johann-Peter Melder, Peter Bassler | 2005-06-14 |
| 6896772 | Method for separating ammonia from solutions containing caprolactam and ammonia | Hermann Luyken, Frank Ohlbach, Stefan Maixner, Johann-Peter Melder, Peter Bassler +1 more | 2005-05-24 |
| 6888011 | Porous catalyst for the hydrogenation of maleic anhydride to tetrahydrofuran | Holger Borchert, Stephan Schlitter, Markus Rösch, Ralf-Thomas Rahn, Alexander Weck | 2005-05-03 |
| 6878798 | Method for producing a polymer, using caprolactam | Frank Ohlbach, Helmut Winterling, Andreas Ansmann, Johann-Peter Melder, Stefan Maixner +2 more | 2005-04-12 |
| 6870014 | Catalyst and method for producing polytetrahydrofurane | Ulrich Steinbrenner, Thomas Narbeshuber, Martin Haubner, Christoph Sigwart, Gerd Linden +6 more | 2005-03-22 |
| 6852669 | Hydrogenation catalyst | Guido Voit, Peter Bassler, Andreas Ansmann, Hermann Luyken, Martin Merger +2 more | 2005-02-08 |
| 6831182 | Method for the hydrogenation of maleic anhydride and related compounds in two serial reaction zones | Holger Borchert, Stephan Schlitter, Markus Rösch, Frank Stein, Ralf-Thomas Rahn +2 more | 2004-12-14 |
| 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, Johann-Peter Melder +2 more | 2004-12-07 |
| 6828464 | Preparation of cyclopentenones | Shelue Liang, Sylvia Huber-Dirr, Andrea Haunert | 2004-12-07 |
| 6815388 | Method for activating passivated iron | Frank Ohlbach, Hermann Luyken, Johann-Peter Melder, Martin Merger, Andreas Ansmann +1 more | 2004-11-09 |
| 6815527 | Continuous method for producing polyamides from aminonitriles | Peter Bassler, Helmut Winterling, Wolfgang Loth | 2004-11-09 |
| 6765118 | Method for the production of alcohols on rhenium-containing activated charcoal supported catalysts | Rolf Pinkos, Stephan Schunk, Joachim Wulff-Doring | 2004-07-20 |
| 6730800 | Method for the production of tetrahydrofuran | Frank Stein, Rolf Pinkos, Michael Hesse, Michael Jolyon Sprague, Markus Rösch +4 more | 2004-05-04 |
| 6716937 | Method for the single-step production of polytetrahydrofuran and tetrahydrofuran copolymers | Gerd Bohner, Thomas Domschke, Martin Haubner, Christoph Sigwart, Ulrich Steinbrenner +1 more | 2004-04-06 |
| 6686465 | Preparation of cyclic lactams | Frank Ohlbach, Andreas Ansmann, Peter Bassler, Hermann Luyken, Stefan Maixner +1 more | 2004-02-03 |