Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9145347 | Process for preparing deodorized 1,2-propanediol | Stephan Maurer, Roman Prochazka, Oliver Bey, Jochen Steiner, Jochem Henkelmann +2 more | 2015-09-29 |
| 8809596 | Method for producing deodorized 1,2-propanediol | Stephan Maurer, Roman Prochazka, Oliver Bey, Jochen Steiner, Jochem Henkelmann +2 more | 2014-08-19 |
| 8293951 | Method for producing 1,2-propandiol by hydrogenation in at least three successive reactors | Jochem Henkelmann, Roman Prochazka, Oliver Bey, Stephan Maurer, Jochen Steiner +2 more | 2012-10-23 |
| 8273924 | Method for producing 1,2-propandiol by low-pressure hydrogenation of glycerine | Jochem Henkelmann, Roman Prochazka, Oliver Bey, Stephan Maurer, Jochen Steiner +3 more | 2012-09-25 |
| 8252962 | Method for producing 1,2-propandiol by hydrogenating glycerine in a two-step reactor cascade | Jochem Henkelmann, Roman Prochazka, Oliver Bey, Stephan Maurer, Jochen Steiner +4 more | 2012-08-28 |
| 7790937 | Process for the preparation of 1,2-propanediol | Jochem Henkelmann, Michael Becker, Jochen Buerkle, Gerhard Theis, Stephen Maurer | 2010-09-07 |
| 6403845 | Preparation of pentanediols from alkoxydihydropyrans | Joachim Pfeffinger, Jan Nouwen, Karsten Eller, Arthur Hohn, Jürgen Hunger | 2002-06-11 |
| 6353118 | Dewatering and purification of crude pyrrolidine | Joachim Simon, Willi Schmidt | 2002-03-05 |
| 6350923 | Hydrogenation of aldehydes | Karsten Eller, Rolf Pinkos | 2002-02-26 |
| 6162928 | Preparation of pyrroles | Joachim Wulff-Doring, Joachim Simon, Michael Hesse | 2000-12-19 |
| 6022999 | Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine having a cis/trans isomer ratio of at least 70:30 | Guido Voit, Tom Witzel, Boris Breitscheidel, Hermann Luyken, Karl-Heinz Ross | 2000-02-08 |
| 5756845 | Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine | Guido Voit, Tom Witzel, Boris Breitscheidel, Wolfgang Harder, Hermann Luyken +2 more | 1998-05-26 |
| 5502213 | Purification of crude pyrroles | Peter Pfab, Dieter Franz | 1996-03-26 |