Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11591543 | Aroma chemical compositions containing 3,5-diethyl-2-propyl-tetrahydropyran and/or unsaturated derivatives thereof | Nicolas MARION, Rolf Pinkos, Stefan RUEDENAUER, Florian Garlichs, Ralf Pelzer +7 more | 2023-02-28 |
| 9315479 | Process for preparing pyrrolidine | Roland Bou Chedid, Johann-Peter Melder, Jörg Pastre, Aik Meam Tan | 2016-04-19 |
| 8981093 | Process for preparing piperazine | Roland Bou Chedid, Johann-Peter Melder, Ulrich Abel, Nina Challand, Bernd Stein +1 more | 2015-03-17 |
| 8927712 | Process for the preparation of a mono-N-alkylpiperazine | Roland Bou Chedid, Johann-Peter Melder, Ulrich Abel, Bernd Stein | 2015-01-06 |
| 8884015 | Process for the preparation of a mono-N-alkypiperazine | Roland Bou Chedid, Johann-Peter Melder, Ulrich Abel, Bernd Stein | 2014-11-11 |
| 8436169 | Process for preparing 1,4-bishydroxyethylpiperazine | Christof Wilhelm Wigbers, Nina Challand, Johann-Peter Melder, Udo Rheude | 2013-05-07 |
| 8383866 | Process for preparing diols by hydrogenating a carboxylic acid-comprising mixture by means of cobalt-comprising catalysts | Rolf Pinkos, Axel Paul, Rolf Fischer | 2013-02-26 |
| 7560594 | Method for producing triethanolamine | Frank Haese, Johann-Peter Melder, Manfred Julius | 2009-07-14 |
| 7550632 | Methods of treating triethanolamine with acid components and basic components, and triethanolamine compositions containing the same | Frank Haese, Johann-Peter Melder, Manfred Julius | 2009-06-23 |
| 6093677 | Catalyst for dehydrogenating 1,4-butanediol to .gamma.-butyrolactone | Hans Jochen Mercker, Frank-Friedrich Pape, Joachim Simon, Andreas Henne, Michael Hesse +3 more | 2000-07-25 |
| 5955620 | Dehydrogenation of 1,4-butanediol to .gamma.-butyrolactone | Hans Jochen Mercker, Frank-Friedrich Pape, Joachim Simon, Andreas Henne, Michael Hesse +3 more | 1999-09-21 |
| 5847131 | Preparation of N-substituted cyclic amines | Joachim Simon, Heinz Lingk, Rainer Becker, Andreas Henne, Rolf Lebkucher +3 more | 1998-12-08 |
| 5767329 | Purity of 1,6-hexanediol | Rolf Fischer, Wolfgang Harder, Axel Paul, Rolf Pinkos | 1998-06-16 |
| 5641857 | Preparation of polytetrahydrofuran | Rolf Fischer, Ulrich Mueller, Rainer Becker | 1997-06-24 |
| 5589600 | Preparation of cyclohexene by partial hydrogenation of benzene | Rolf Fischer, Laszlo Marosi | 1996-12-31 |
| 5382740 | Continuous production of cyclohexene from cyclohexyl esters | Rolf Pinkos, Rolf Fischer | 1995-01-17 |