Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12280353 | Apparatus for and process of making pseudoionone and hydroxy pseudoionone | Josias Jakobus Nieuwoudt, Bernhard Brunner, Sven REINING, Bjoern KAIBEL, Alexander Zipp +1 more | 2025-04-22 |
| 11396487 | Process of making pseudoionone and hydroxy pseudoionone in aqueous mixtures comprising citral and acetone, comprising adding first and second amounts of hydroxide | Josias Jakobus Nieuwoudt, Bernhard Brunner, Sven REINING, Bjoern KAIBEL, Alexander Zipp +1 more | 2022-07-26 |
| 11091424 | Preparation of acetate compounds via a ketene compound | Volker Hickmann, Sumana Roy, Dominik Herbrecht, Michael Acker, Wolfgang Krause +3 more | 2021-08-17 |
| 10981885 | Tetrahydropyranyl lower alkyl esters and the production of same using a ketene compound | Volker Hickmann, Stefan RUEDENAUER, Ralf Pelzer | 2021-04-20 |
| 10233169 | Production of 2-substituted 4-hydroxy-4-methyl-tetrahydropyrans from starting materials containing 2-alkyl-4,4-dimethyl-1,3-dioxanes | Stefan Rüdenauer | 2019-03-19 |
| 10160931 | Use of isomerically pure or highly isomer-enriched cis- or trans-(2-isobutyl-4-methyl-tetrahydropyran-4-yl)acetate | Stefan Rüdenauer, Margarethe Klos, Ralf Pelzer, Wolfgang Krause | 2018-12-25 |
| 10106517 | Method for producing tetrahydropyranyl esters | Stefan Rüdenauer, Ralf Pelzer, Volker Hickmann, Margarethe Klos | 2018-10-23 |
| 10023550 | Production of 2-substituted 4-hydroxy-4-methyltetrahydropyrans having stable odoriferous quality | Martine Dehn, Klaus Ebel, Karl Beck, Axel Salden, Ralf Pelzer | 2018-07-17 |
| 9994540 | Production of 2-substituted 4-methyl-tetrahydropyrans from starting materials containing 2-alkyl-4,4-dimethyl-1,3-dioxanes | Stefan Rüdenauer | 2018-06-12 |
| 9695142 | Method for producing 2-substituted 4-hydroxy-4-methyl-tetrahydropyrans, said method using recycling | Karl Beck, Gabriele Gralla, Oliver Bey, Klaus Ebel | 2017-07-04 |
| 9688650 | Method for producing 2-substituted 4-hydroxy-4-methyl-tetrahydropyrans in a reactor cascade | Karl Beck, Klaus Ebel, Oliver Bey, Gabriele Gralla | 2017-06-27 |
| 9139549 | Process for the integrated preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyrans and of 2-substituted 4-Methyltetrahydropyrans | Oskar Röder, Klaus Ebel, Ralf Pelzer, Wolfgang Krause, Karl Beck | 2015-09-22 |