Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8163139 | Process for the distillative separation of mixtures comprising monoethylene glycol and diethylentriamine | Karin Pickenäcker, Johann-Peter Melder, Bram Willem Hoffer, Thomas Krug, Frank-Friedrich Pape | 2012-04-24 |
| 7700806 | Method for producing ethylene amines ethanol amines from monoethylene glycol (MEG) | Johann-Peter Melder, Bram Willem Hoffer, Thomas Krug, Karin Pickenäcker, Frank-Friedrich Pape +1 more | 2010-04-20 |
| 7635790 | Method for producing ethylene amines and ethanol amines by the hydrogenating amination of monoethylene glycol and ammonia in the presence of a catalyst | Johann-Peter Melder, Bram Willem Hoffer, Thomas Krug, Karin Pickenäcker, Frank-Friedrich Pape +1 more | 2009-12-22 |
| 7626058 | Processes for producing ethylene amines | Johann-Peter Melder, Kirsten Dahmen, Klemens Massonne, Steffen Oehlenschlaeger, Kai Michael Exner | 2009-12-01 |
| 7271292 | Process for distillatively removing piperazine from an ethylenediamine-piperazine mixture | Michael Jödecke, Ortmund Lang, Matthias Frauenkron | 2007-09-18 |