Issued Patents All Time
Showing 51–75 of 244 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6683180 | Method for the production of caprolactam | Frank Ohlbach, Andreas Ansmann, Johann-Peter Melder | 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 |
| 6683177 | Process for producing caprolactam | Eberhard Fuchs, Johann-Peter Melder, Werner Schnurr | 2004-01-27 |
| 6677449 | Preparation of caprolactam | Peter Bassler, Dieter Baumann, Eberhard Fuchs, Johann-Peter Melder, Frank Ohlbach | 2004-01-13 |
| 6521763 | Method for producing gamma-butyrolactone | Rolf Pinkos | 2003-02-18 |
| 6462220 | Method for simultaneous preparation of 6-aminocapronitrile and hexamethylene diamine | Hermann Luyken, Frank Ohlbach, Andreas Ansmann, Peter Bassler, Johann-Peter Melder +4 more | 2002-10-08 |
| 6441110 | Method for producing halogen-free reactive polyisobutene | Christoph Sigwart, Thomas Narbeshuber, Karsten Eller, Manfred Barl, Eugen Gehrer | 2002-08-27 |
| 6433192 | Method for producing mixtures of 1,4-butanediol, tetrahydrofuran and &ggr;-butyrolactone | Gerd Kaibel, Rolf Pinkos, Ralf-Thomas Rahn | 2002-08-13 |
| 6433229 | Method of producing cyclic, &agr;, &bgr;-unsaturated ketones | Rolf Pinkos | 2002-08-13 |
| 6429339 | Method for producing cyclopentanone | Shelue Liang, Frank Stein, Joachim Wulff-Doring | 2002-08-06 |
| 6426438 | Method for producing 1,6-hexanediol and 6-hydroxycaproic acid or their esters | Rolf Pinkos, Frank Stein | 2002-07-30 |
| 6407294 | Method for producing 1,6-hexanediol | Boris Breitscheidel, Rolf Pinkos, Frank Stein, Shelue Liang | 2002-06-18 |
| 6387224 | Method for distilling mixtures containing butanediol | Rolf Pinkos, Shelue Liang | 2002-05-14 |
| 6384154 | Preparation of halogen-free, reactive polyisobutene | Christoph Sigwart, Thomas Narbeshuber, Eugen Gehrer, Ulrich Steinbrenner, Shelue Liang | 2002-05-07 |
| 6362333 | Method for simultaneously producing a cyclic lactam and a cyclic amine | Martin Merger, Andreas Ansmann | 2002-03-26 |
| 6362332 | Coproduction of a cyclic lactam and a cyclic amine | Martin Merger, Andreas Ansmann | 2002-03-26 |
| 6359178 | Method for producing hexamethylene diamine | Peter Bassler, Hermann Luyken, Frank Ohlbach, Johann-Peter Melder, Martin Merger +3 more | 2002-03-19 |
| 6359108 | Method for polymerizing cyclic ether | Karsten Eller, Frank Stein, Christoph Sigwart, Rainer Becker, Klaus-Dieter Plitzko +1 more | 2002-03-19 |
| 6350924 | Method for producing 1,4-butanediol | Gerd Kaibel, Rolf Pinkos, Ralf-Thomas Rahn | 2002-02-26 |
| 6348630 | Method for purifying hexamethylenediamine in mixtures of hexamethylenediamine and an unsaturated cyclic imine | Claudia Merk, Peter Bassler, Guido Voit, Hermann Luyken | 2002-02-19 |
| 6346641 | Method for simultaneous production of 6-aminocapronitrile and hexamethylenediamine | Hermann Luyken, Frank Ohlbach, Andreas Ansmann, Peter Bassler, Johann-Peter Melder +4 more | 2002-02-12 |
| 6316640 | Preparation of tetrahydrofuran | Shelue Liang, Rolf Pinkos | 2001-11-13 |
| 6316659 | Method for producing cyclopentanone and cyclopentene-1-carboxylic acid and their esters | Shelue Liang, Rolf Pinkos, Frank Stein | 2001-11-13 |
| 6297394 | Iron-based catalyst for hydrogenating alpha-, omega-dinitriles | Guido Voit, Peter Bassler, Andreas Ansmann, Hermann Luyken, Martin Merger +2 more | 2001-10-02 |