Issued Patents All Time
Showing 51–75 of 82 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9809530 | Method for producing alpha-hydroxy carboxylic esters in the gas phase | Belaid Ait Aissa, Alexander May, Matthias Groemping | 2017-11-07 |
| 9732023 | Process for preparation of methacrylic acid and methacrylic acid esters | Torsten Balduf, Rudolf Burghardt | 2017-08-15 |
| 9617199 | Process for preparing unsaturated esters proceeding from aldehydes by direct oxidative esterification | Alexander Lygin, Torsten Balduf, Rudolf Burghardt, Andreas Tepperis, Matthias Groemping | 2017-04-11 |
| 9611204 | Method of regulating the water content in a continuous method for producing methacrolein | Rudolf Burghardt, Frederik Gluth, Gerhard Koelbl, Torsten Balduf | 2017-04-04 |
| 9580374 | Method for producing methacrolein and the conditioning/draining thereof for direct oxidative esterification | Matthias Groemping, Alexander Lygin, Torsten Balduf, Rudolf Burghardt | 2017-02-28 |
| 9428437 | Method for dehydrating alpha-substituted carboxylic acids | Alexander May, Joerg Becker, Willi Ploesser, Marcel Treskow, Martin Koestner | 2016-08-30 |
| 7423173 | Method for producing alpha-hydroxycarboxylic acids and the esters thereof | Friedel Schultheis, Udo Gropp, Matthias Groemping | 2008-09-09 |
| 6605746 | Process for the preparation of 6-methylheptanone | Stephan Kretz, Achim Schneider | 2003-08-12 |
| 6586635 | Process for the preparation of unsaturated ketones | Nongyuan Shi, Bernd Drapal, Markus Julino, Klaus Huthmacher | 2003-07-01 |
| 6583323 | Process for the production of 6-methylheptanone | — | 2003-06-24 |
| 6566559 | Process for the production of isopropenyl methyl ether | Stephan Kretz, Volker Hafner, Georg Markowz | 2003-05-20 |
| 6482964 | Process for the preparation of &bgr;-isophorone epoxide | Klaus Huthmacher, Alexander Moller | 2002-11-19 |
| 6469215 | Process for the production of an intermediate mixture of &bgr;-isophorone epoxide and its isomer 4-hydroxyisophorone (HIP) | Klaus Huthmacher, Sylvain Perrin | 2002-10-22 |
| 6441199 | Process for the production of &agr;-tocopherol acetate by condensation of trimethylhydroquinone with isophytol with recycling of an acetic catalyst solution | Stepahn Kretz, Klaus Huthmacher | 2002-08-27 |
| 6420609 | Process for the production of 2,2,6-trimethylcyclohexane-1,4-dione | Klaus Huthmacher, Sylvain Perrin | 2002-07-16 |
| 6417406 | Process for the production of 6-methyl heptanone | Klaus Huthmacher | 2002-07-09 |
| 6417409 | Process for the production of 2,3,5-trimethylhydroquinone diesters | Klaus Huthmacher | 2002-07-09 |
| 6410798 | Process for the preparation of 2,3,5-trimethy1-p-Benzoquinone | Ralf Maassen, Klaus Huthmacher | 2002-06-25 |
| 6380437 | Process for the preparation of unsaturated 4,5-allene ketones, 3,5-diene ketones and the corresponding saturated ketones | Nongyuan Shi, Frank Hubner, Bernd Drapal, Rainer Peter, Klaus Huthmacher +1 more | 2002-04-30 |
| 6350897 | Process for preparing trimethylhydroquinone diacetate and trimethylhydroquinone | Klaus Huthmacher | 2002-02-26 |
| 6329535 | Process for preparing esterified chroman compounds | Horst Weigel, Hans Joachim Hasselbach, Klaus Huthmacher | 2001-12-11 |
| 6316661 | Process for the production of 2,3,5-trimethylhydroquinone diesters | Horst Weigel, Klaus Huthmacher, Nongyuan Shi, Georg Markowz, Volker Hafner | 2001-11-13 |
| 6265617 | Process for the preparation of 3,5,5-trimethylcyclohexa-3-en-1-one (.beta.-isophorone) by isomerization of 3,5,5- trimethylcyclohexa-2-en-1-one (.alpha.-isophorone) | Stephan Kretz, Hans Joachim Hasselbach, Klaus Huthmacher, Rainer Hahn, Hermann Schmitt | 2001-07-24 |
| 6262311 | Process for the preparation of 2,3,5-trimethyl-p-benzoquinone | Ralf Maassen, Barbara Jäger, Klaus Huthmacher | 2001-07-17 |
| 6239294 | Process to produce .alpha.-tocopherol-acetate | Stephan Kretz, Klaus Huthmacher | 2001-05-29 |