Issued Patents All Time
Showing 26–50 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9108898 | Continuous method for producing primary aliphatic amines from aldehydes | Dirk Bermann, Matthias Eisenacher, Sebastian Geisel, Leif Johnen, Peter Heymanns +2 more | 2015-08-18 |
| 9045451 | Method for recovering di-trimethylolpropane and trimethylolpropane-enriched product streams from the side streams of trimethylolpropane production | Guido D. Frey, Thorsten Kreickmann | 2015-06-02 |
| 9018417 | Process for recovering aliphatic monocarboxylic acids from distillation | Guido D. Frey, Jörg Arnold, Wolfgang Hofs, Matthias Kramer, Thomas Muller | 2015-04-28 |
| 9006479 | Process for preparing polyol esters | Guido D. Frey | 2015-04-14 |
| 8987523 | Method for obtaining ditrimethylolpropane and trimethylolpropane-enriched product streams from the side-streams in trimethylolpropane production | Thorsten Kreickmann, Guido D. Frey, Norman Nowotny | 2015-03-24 |
| 8987527 | Process for obtaining trimethylolpropane-enriched product streams from the secondary streams of trimethylolpropane preparation | Guido D. Frey | 2015-03-24 |
| 8841489 | Method for carrying out multiphase aldol condensation reactions to give mixed α, β-unsaturated aldehydes | Dirk Bermann, Guido D. Frey, Norman Nowotny, Kurt Schalapski | 2014-09-23 |
| 8796486 | Process for aftertreating polyolesters | Guido D. Frey, Heyko Jürgen Schultz | 2014-08-05 |
| 8664434 | Method for producing aliphatic carboxylic acids from aldehydes by microreaction technology | Tonia Weber, Alexander Kaufmann, Oliver Borgmeier, Thorsten Kreickmann, Diana Utz +2 more | 2014-03-04 |
| 8664444 | Method for producing primary aliphatic amines from aldehydes | Kurt Schalapski, Norman Nowotny, Matthias Eisenacher, Dirk Bermann, Thorsten Kreickmann +1 more | 2014-03-04 |
| 8524938 | Process for lightening the color of polyol esters | Guido D. Frey, Thorsten Kreickmann | 2013-09-03 |
| 8399697 | Process for preparing polyol esters | Tonia Weber, Oliver Borgmeier, Guido D. Frey | 2013-03-19 |
| 8357824 | Process for preparing neopentyl glycol by cracking high boilers occurring in the production process | Rolf Peter Schulz, Horst Scholz, Thomas Hupperich, Peter Heymanns, Tonia Weber +2 more | 2013-01-22 |
| 8158816 | Process for lightening the color of polyol esters | Guido D. Frey, Thorsten Kreickmann, Tonia Weber | 2012-04-17 |
| 6423856 | Process for preparing ester plasticizers | Helmut Springer, Klaus Dieter Merscher, Rudolf Heumuller, Klaus Schimmer | 2002-07-23 |
| 6020442 | Oxidized polyarylene sulfides | Dietrich Fleischer, Jurgen Kulpe, Andreas Schleicher | 2000-02-01 |
| 5712350 | Oxidation of polyarylene sulfides | Dietrich Fleischer, Jurgen Kulpe, Andreas Schleicher | 1998-01-27 |
| 5675034 | Process for preparing 2-(p-fluorophenyl)-2 methyl-propionic acid and 3-(p-fluorophenyl)-2-methylpropionic acid derivatives | Matthias Beller, Hartmut Fischer | 1997-10-07 |
| 5593594 | Ter material and process for removing ozone from gases and liquids | Dietrich Fleischer, J urgen Kulpe, Andreas Schleicher | 1997-01-14 |
| 5591893 | Process for the preparation of polycarboxylic acids and derivatives thereof | J urgen Kulpe | 1997-01-07 |
| 5543564 | Process for releasing acidic organic compounds from salts thereof by carbon dioxide | J urgen Kulpe, Hans-Martin R uffer, Siegbert Rittner | 1996-08-06 |
| 5516932 | Halogenated cinnamic acids and esters thereof, processes for the preparation thereof and halogenated aryldiazonium salts | Matthias Beller, Hartmut Fischer, Laurent Weisse, Klaus Forstinger, Ralf Pfirmann | 1996-05-14 |
| 5510512 | Process for preparation of 2-(dialkoxymethyl)-carboxylic acid esters | — | 1996-04-23 |
| 5496917 | Two-stage oxidation of polyarylene sulfides | Dietrich Fleischer, Ju/ rgen Kulpe, Andreas Schleicher | 1996-03-05 |
| 5496916 | Process for oxidizing polyarylene compounds containing thioether groups | Dietrich Fleischer, Ju/ rgen Kulpe, Andreas Schleicher | 1996-03-05 |