Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8293075 | Method for the continuous separation by distillation of mixtures that contain morphonline (MO), monoaminodiglycol (ADG), ammonia and water by means of distillation | Helmut Schmidtke, Oliver Buβmann, Udo Rheude, Uwe Leyk, Manfred Julius +2 more | 2012-10-23 |
| 8246793 | Method for the continuous separation of mixtures comprising morpholine (MO), monoaminodiglycol (ADG), ammonia and water by means of distillation | Helmut Schmidtke, Oliver Buβmann, Udo Rheude, Uwe Leyk, Manfred Julius +2 more | 2012-08-21 |
| 8197646 | Processes for continuous fractional distillation of mixtures comprising morpholine, monoaminodiglycol, ammonia and water | Helmut Schmidtke, Oliver Buβmann, Udo Rheude, Uwe Leyk, Manfred Julius +2 more | 2012-06-12 |
| 7994350 | Process for continuously preparing N-ethyl-2-pyrrolidone (NEP) | Helmut Schmidtke, Silke Simon, Karl-Heinz Ott, Ronald Drews, Stephanie Mollner | 2011-08-09 |