Issued Patents 2004
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 6828464 | Preparation of cyclopentenones | Shelue Liang, Sylvia Huber-Dirr, Andrea Haunert | 2004-12-07 |
| 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 |
| 6815527 | Continuous method for producing polyamides from aminonitriles | Peter Bassler, Helmut Winterling, Wolfgang Loth | 2004-11-09 |
| 6815388 | Method for activating passivated iron | Frank Ohlbach, Hermann Luyken, Johann-Peter Melder, Martin Merger, Andreas Ansmann +1 more | 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 |
| 6683180 | Method for the production of caprolactam | Frank Ohlbach, Andreas Ansmann, Johann-Peter Melder | 2004-01-27 |
| 6683177 | Process for producing caprolactam | Eberhard Fuchs, Johann-Peter Melder, Werner Schnurr | 2004-01-27 |
| 6683179 | Preparation of caprolactam | Peter Bassler, Dieter Baumann, Eberhard Fuchs, Johann-Peter Melder, Frank Ohlbach | 2004-01-27 |
| 6683178 | Preparation of cyclic lactams | Frank Ohlbach, Andreas Ansmann, Peter Bassler, Hermann Luyken, Stefan Maixner +1 more | 2004-01-27 |
| 6677449 | Preparation of caprolactam | Peter Bassler, Dieter Baumann, Eberhard Fuchs, Johann-Peter Melder, Frank Ohlbach | 2004-01-13 |