Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6514387 | Rectifying column for extractive distillation of close-boiling or azeotropic boiling mixtures | Bärbel Kolbe, Helmut Gehrke, Frank Klaus Ennenbach, Uwe Ranke | 2003-02-04 |
| 6124514 | Process for generating pure benzene from reformed gasoline | Hans-Christoph Schneider, Helmut Gehrke, Bernhard Firnhaber | 2000-09-26 |
| 5401365 | High purity benzene production using extractive distillation | George Chen, Brenda M. Balaban, Bernhard Firnhaber | 1995-03-28 |
| 5080761 | Method of optimizing the operation of a distillation column provided with a side heating device | Hans-Christoph Schneider, Ulrich Rudel | 1992-01-14 |
| 5031754 | Method of working up an overhead product of an extractive distillation of a hydrocarbon mixture and apparatus for same | Hans-Christoph Schneider, Ulrich Rudel | 1991-07-16 |
| 4997547 | Method for the production of an aromate concentrate suitable for use as blending component for fuel | Bernhard Firnhaber, Martin Schulze | 1991-03-05 |
| 4925535 | Process for the production of an aromate concentrate suitable for use as blending component for gasification fuel | Gerhard Preusser, Martin Schulze | 1990-05-15 |
| 4776927 | Process for the separation of aromatic hydrocarbons from a hydrocarbon mixture | Gerhard Preusser | 1988-10-11 |
| 4586986 | Method of recovering pure aromatic substances | Gerhard Preusser, Martin Schulze, Hans-Christoph Schneider | 1986-05-06 |