| 6601543 |
Method of utilizing a methane-containing biogas |
Suleyman Yuce, Joachim Gebel, Alexander Schmitt |
2003-08-05 |
| 6595001 |
Method for utilization of a methane-containing gas |
Suleyman Yuce, Joachim Gebel, Alexander Schmitt |
2003-07-22 |
| 6126819 |
Apparatus for the treatment of liquids contaminated by foreign substances |
Wilhelm Heine, Klaus Vossenkaul |
2000-10-03 |
| 6059970 |
Membrane separation device |
Robert Kohlheb |
2000-05-09 |
| 5626752 |
Device for separating biologic-organic flow media with filter elements in the form of membrane cushions |
Jurgen Mohn, Wilhelm Heine, Rainer Mellis, 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, Rainer Mellis |
1994-11-08 |
| 4861476 |
Separator cell for pressure filtering and reverse osmosis |
Robert Kohlheb |
1989-08-29 |
| 4721562 |
Aerating apparatus |
Wolfgang Barnscheidt, Horst von Borries, August Schiffermuller, Hubert Zimmermann, Jean-Pierre Lamort |
1988-01-26 |
| 4522342 |
Impact mill |
Dieter Munschenborn |
1985-06-11 |