Issued Patents All Time
Showing 126–150 of 244 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5756808 | Preparation of aliphatic, alpha omega-aminonitriles | Klemens Flick, Johann-Peter Melder, Werner Schnurr, Klaus Ebel, Tom Witzel +2 more | 1998-05-26 |
| 5741888 | Removal of heteropoly compounds from polyethers, polyesters and polyether esters | Hans-Jurgen Weyer | 1998-04-21 |
| 5739375 | Methylation of organic compounds | — | 1998-04-14 |
| 5717090 | Simultaneous preparation of caprolactam and hexamethylenediamine | Peter Bassler, Hermann Luyken, Gunther Achhammer, Tom Witzel, Eberhard Fuchs +1 more | 1998-02-10 |
| 5714638 | Preparation of polyoxyalkylene glycol monoether of tert-butyl alcohol and product | Hans-Juergen Weyer, Gerhard Jeschek, Herbert Mueller | 1998-02-03 |
| 5693793 | Preparation of caprolactam from 6-aminocapronitrile | Josef Ritz, Eberhard Fuchs, Guido Voit, Gunther Achhammer | 1997-12-02 |
| 5679869 | Preparation of aldehydes | Werner Schnurr, Joachim Wulff-Doring, Michael Hesse | 1997-10-21 |
| 5659068 | Preparation of polyoxyalkylene glycol monoesters of monocarboxylic acids | Hans-Juergen Weyer, Gerhard Jeschek, Herbert Mueller | 1997-08-19 |
| 5646307 | Preparation of .gamma.-butyrolactone | Rolf Pinkos | 1997-07-08 |
| 5641857 | Preparation of polytetrahydrofuran | Roman Dostalek, Ulrich Mueller, Rainer Becker | 1997-06-24 |
| 5618954 | Preparation of 3,4-epoxy-1-butene | Stefan Boeck, Klaus Herzog, Herbert Vogel, Martin Fischer | 1997-04-08 |
| 5606081 | Preparation of cyclic ether ketones | Werner Schnurr | 1997-02-25 |
| 5589600 | Preparation of cyclohexene by partial hydrogenation of benzene | Roman Dostalek, Laszlo Marosi | 1996-12-31 |
| 5580994 | Preparation of tetrahydropyran-4-carboxylic acid and its esters | Werner Schnurr, Norbert Goetz, Thomas Kuekenhoehner | 1996-12-03 |
| 5561217 | Preparation of polyether glycols | Hans-Juergen Weyer, Rolf Pinkos | 1996-10-01 |
| 5536854 | Preparation of 2-methyl-1,4-butanediol and 3-methyltetrahydrofuran | Hans-Juergen Weyer, Franz Merger, Juergen Frank, Jochem Henkelmann, Hardo Siegel +1 more | 1996-07-16 |
| 5532386 | Catalytic process for eliminating carboxylic ester and acyl groups from organic compounds | — | 1996-07-02 |
| 5527946 | Preparation of aliphatic alpha, omega-aminonitriles | Klemens Flick, Johann-Peter Melder, Werner Schnurr, Klaus Ebel, Tom Witzel +2 more | 1996-06-18 |
| 5512697 | Preparation of aliphatic alpha, omega-aminonitriles | Werner Schnurr, Peter Bassler, Wolfgang Harder | 1996-04-30 |
| 5508465 | Preparation of aliphatic alpha, omega-aminonitriles in the gas phase | Werner Schnurr, Joachim Wulff-Doring, Rudolf Bazner | 1996-04-16 |
| 5496941 | Process for continuous purification of crude caprolactam prepared from 6-aminocapronitrile | Josef Ritz, Werner Schnurr, Gu/ nther Achhammer, Hermann Luyken, Eberhard Fuchs | 1996-03-05 |
| 5496958 | Preparation of 5-vinylpyrrolidones | Werner Hoffmann, Ernst Langguth, Hardo Siegel | 1996-03-05 |
| 5475158 | Preparation of cycloalkanols | Thomas Krug, Rolf Pinkos | 1995-12-12 |
| 5466831 | Preparation of 3-(2-acyloxyethyl)-dihydro-2(3H)furanones | Werner Schnurr, Norbert Goetz, Thomas Kuekenhoehner | 1995-11-14 |
| 5463079 | Preparation of five-membered nitrogen heterocycles | Rolf Pinkos | 1995-10-31 |