Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7901467 | Process for treatment of metal surfaces | Wolfgang Ebert, Alexander Meyer, Bert Ruytinx, Alexander Karbach, Delef Michalski-Vollmer | 2011-03-08 |
| 5626752 | Device for separating biologic-organic flow media with filter elements in the form of membrane cushions | Jurgen Mohn, Wilhelm Heine, Robert Rautenbach, Klaus Vossenkaul | 1997-05-06 |
| 5362395 | Method and apparatus for biologically purifying sewage which is organically loaded with substances difficult to decompose biologically or not decomposable biologically | Wolfgang Dorau, Friedrich Wagner, Herbert Wienands, Robert Rautenbach | 1994-11-08 |