Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639937 | Process for the production of olefins | Hermann Hover | 1997-06-17 |
| 5316627 | Process for producing odorless dimethyl ether | — | 1994-05-31 |
| 5049258 | Reprocessing of contaminated oils | Karl-Heinz Keim, Peter Seifried, Ralf Wehn | 1991-09-17 |
| 5037511 | Process for the production of pure dimethylether | Horst Dornhagen, Ewald Meisenburg, Horst Schmid | 1991-08-06 |
| 5024678 | Process for the prevention or reduction of deposits in carburetors, injection devices and similar devices of engines | Dagmar Mertens-Gottselig, Heinrich Muller, Manfred Wildersohn | 1991-06-18 |
| 4885405 | Process for the production of pure dimethylether and a catalyst used in the process | Horst Dornhagen, Bernd-Michael Haas, Ewald Meisenburg | 1989-12-05 |
| 4802956 | Process for the purification of dimethylether by distillation | Horst Dornhagen, Ewald Meisenburg | 1989-02-07 |
| 4394221 | Method of deodorizing and/or deacidifying high-boiling organic compounds, particularly edible oils | Hermann Stage, Walter Kuhns | 1983-07-19 |