Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11919846 | Continuous process for preparing methacrolein | Alexander Lygin, Steffen Krill, Matthias Grömping, Rudolf Burghardt | 2024-03-05 |
| 10766847 | Method for producing methylmethacrylate | Steffen Krill, Martin Koestner, Matthias Groemping, Alexander Lygin, Rudolf Burghardt | 2020-09-08 |
| 10457626 | Method for producing methylmethacrylate | Steffen Krill, Martin Koestner, Matthias Groemping, Alexander Lygin, Rudolf Burghardt | 2019-10-29 |
| 10273201 | Method for producing methylmethacrylate | Steffen Krill, Martin Koestner, Matthias Groemping, Alexander Lygin, Rudolf Burghardt | 2019-04-30 |
| 10125077 | Optimized process for preparing methacrylic acid | Steffen Krill, Rudolf Burghardt, Melanie Raczek | 2018-11-13 |
| 9994507 | Optimized method for producing methacrolein | Rudolf Burghardt, Steffen Krill, Gerhard Koelbl, Martin Koestner, Eduard Rundal | 2018-06-12 |
| 9963417 | Process for producing methyl methacrylate | Steffen Krill, Alexander Lygin, Matthias Groemping, Rudolf Burghardt | 2018-05-08 |
| 9890105 | Method for producing methylmethacrylate | Steffen Krill, Martin Koestner, Matthias Groemping, Alexander Lygin, Rudolf Burghardt | 2018-02-13 |
| 9816703 | Recirculation and disposal of aqueous catalyst solutions in amine catalytic processes | Steffen Krill, Rudolf Burghardt, Gerhard Koelbl, Reed Zhao | 2017-11-14 |
| 9732023 | Process for preparation of methacrylic acid and methacrylic acid esters | Steffen Krill, Rudolf Burghardt | 2017-08-15 |
| 9617199 | Process for preparing unsaturated esters proceeding from aldehydes by direct oxidative esterification | Steffen Krill, Alexander Lygin, 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, Steffen Krill | 2017-04-04 |
| 9580374 | Method for producing methacrolein and the conditioning/draining thereof for direct oxidative esterification | Steffen Krill, Matthias Groemping, Alexander Lygin, Rudolf Burghardt | 2017-02-28 |
| 9206108 | Use of a feed compositions in preparation of methacrylic acid by oxidation | — | 2015-12-08 |
| 9162962 | Process for reclaiming methacrylic acid from a high-boiler phase and an aqueous phase | Henning Schaefer, Patrick Peter | 2015-10-20 |
| 8829235 | Process for preparation of methyl methacrylate by esterification during oxidation | — | 2014-09-09 |
| 8445617 | Superabsorbent polymers and methods of making the same | Gunther Bub, Jurgen Mosler, Andreas Sabbagh, Jurgen Kohn, Arndt Selbach | 2013-05-21 |
| 8350081 | Process for preparation of methyl metharylate using recycled methanol | — | 2013-01-08 |
| 8309668 | Superabsorbent polymers and methods of making the same | Gunther Bub, Jurgen Mosler, Andreas Sabbagh, Jurgen Kohn, Arndt Selbach | 2012-11-13 |
| 8252120 | Washing apparatus, a method of purifying a wash material and use of the washing apparatus | Stefan Nordhoff, Joachim Deinken, Joachim Pohlisch, Axel Hengstermann | 2012-08-28 |
| 8178717 | Process for production of (meth)acrylic acid with high boiling fraction work-up by means of crystallization | Gunther Bub, Jurgen Mosler, Andreas Sabbagh, Jurgen Kohn, Arndt Selbach | 2012-05-15 |
| 7964689 | Superabsorbent polymer made from acrylic acid | Stefan Nordhoff, Axel Kobus, Stefan Gross, Hans-Rolf Lausch, Roland Fornika +1 more | 2011-06-21 |
| 7803969 | Continuous process for the production and purification of acrylic acid | Stefan Nordhoff, Axel Kobus, Stefan Gross, Hans-Rolf Lausch, Roland Fornika +1 more | 2010-09-28 |
| 7557246 | Method for the purification of (meth)acrylic acid | Stefan Nordhoff, Jurgen Mosler, Wilfried Uhlich, Dennis Thong Yu-Chiang, Axel Kobus +2 more | 2009-07-07 |
| 7557245 | (Meth)acrylic acid crystal and process for producing aqueous (meth)acrylic acid | Stefan Nordhoff, Gunther Bub, Roland Fornika, Jurgen Mosler, Thomas Rathke +2 more | 2009-07-07 |