Issued Patents All Time
Showing 51–75 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7217818 | Purification of caprolactam | Rolf Fischer, Andreas Ansmann, Peter Bassler, Christoph Benisch, Stefan Maixner +1 more | 2007-05-15 |
| 7147757 | Method for separating an azepine derivative out of a mixture containing an amine an azepine derivative | Frank Ohlbach | 2006-12-12 |
| 7115781 | Iron-containing oxidic material suitable for use as hydrogenation catalyst precursor | Andreas Ansmann, Christoph Benisch, Peter Bassler, Rolf Fischer, Stefan Maixner +1 more | 2006-10-03 |
| 7091153 | Hydrogenation catalyst | Guido Voit, Rolf Fischer, Peter Bassler, Andreas Ansmann, Martin Merger +2 more | 2006-08-15 |
| 7084294 | Method for the recycling of a Lewis acid | Tim Jungkamp, Jens Scheidel, Michael Bartsch, Robert Baumann, Gerd Haderlein | 2006-08-01 |
| 6972075 | Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine | Frank Ohlbach, Rolf Fischer, Johann-Peter Melder, Peter Bassler, Andreas Ansmann +1 more | 2005-12-06 |
| 6905997 | Method for generating catalysts | Frank Ohlbach, Andreas Ansmann, Rolf Fischer, Johann-Peter Melder, Peter Bassler | 2005-06-14 |
| 6896772 | Method for separating ammonia from solutions containing caprolactam and ammonia | Frank Ohlbach, Stefan Maixner, Rolf Fischer, Johann-Peter Melder, Peter Bassler +1 more | 2005-05-24 |
| 6878798 | Method for producing a polymer, using caprolactam | Frank Ohlbach, Helmut Winterling, Andreas Ansmann, Rolf Fischer, Johann-Peter Melder +2 more | 2005-04-12 |
| 6852669 | Hydrogenation catalyst | Guido Voit, Rolf Fischer, Peter Bassler, Andreas Ansmann, Martin Merger +2 more | 2005-02-08 |
| 6828457 | Method for reducing the content of an unsaturated amine in a mixture containing an amine and a nitrile | Frank Ohlbach, Christoph Benisch, Andreas Ansmann, Rolf Fischer, Johann-Peter Melder +2 more | 2004-12-07 |
| 6815388 | Method for activating passivated iron | Frank Ohlbach, Rolf Fischer, Johann-Peter Melder, Martin Merger, Andreas Ansmann +1 more | 2004-11-09 |
| 6699960 | Method for producing polyamides from dinitriles and diamines | Frank Ohlbach | 2004-03-02 |
| 6686465 | Preparation of cyclic lactams | Frank Ohlbach, Andreas Ansmann, Peter Bassler, Rolf Fischer, Stefan Maixner +1 more | 2004-02-03 |
| 6683178 | Preparation of cyclic lactams | Frank Ohlbach, Andreas Ansmann, Peter Bassler, Rolf Fischer, Stefan Maixner +1 more | 2004-01-27 |
| 6462220 | Method for simultaneous preparation of 6-aminocapronitrile and hexamethylene diamine | Frank Ohlbach, Andreas Ansmann, Peter Bassler, Rolf Fischer, Johann-Peter Melder +4 more | 2002-10-08 |
| 6359178 | Method for producing hexamethylene diamine | Rolf Fischer, Peter Bassler, Frank Ohlbach, Johann-Peter Melder, Martin Merger +3 more | 2002-03-19 |
| 6348630 | Method for purifying hexamethylenediamine in mixtures of hexamethylenediamine and an unsaturated cyclic imine | Claudia Merk, Peter Bassler, Rolf Fischer, Guido Voit | 2002-02-19 |
| 6346641 | Method for simultaneous production of 6-aminocapronitrile and hexamethylenediamine | Frank Ohlbach, Andreas Ansmann, Peter Bassler, Rolf Fischer, Johann-Peter Melder +4 more | 2002-02-12 |
| 6300497 | Method for separating an azepine derivative from a mixture containing an amine and an azepine derivative | Alwin Rehfinger | 2001-10-09 |
| 6297394 | Iron-based catalyst for hydrogenating alpha-, omega-dinitriles | Guido Voit, Rolf Fischer, Peter Bassler, Andreas Ansmann, Martin Merger +2 more | 2001-10-02 |
| 6278023 | Method for producing aliphatic alpha-, omega-diamines | Guido Voit, Rolf Fischer, Peter Bassler, Andreas Ansmann, Martin Merger +2 more | 2001-08-21 |
| 6265602 | Method for hydrogenating aliphatic alpha-, omega-dinitriles | Guido Voit, Frank Ohlbach, Martin Merger, Alwin Rehfinger, Rolf Fischer +2 more | 2001-07-24 |
| 6255521 | Method for producing aliphatic alpha, omega-amino nitriles | Guido Voit, Andreas Bohnsack, Rolf Fischer, Peter Bassler, Martin Merger +1 more | 2001-07-03 |
| 6251229 | Process for the separation of 2-aminomethylcyclopentylamine from a mixture containing hexamethyldiamine and 2-aminomethylcyclopentylamine | Alwin Rehfinger, Peter Bassler, Guido Voit, Rolf Fischer, Martin Merger +1 more | 2001-06-26 |