Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828702 | Process for separating a solid substance from a liquid mixture of substances | Rainer Hagen, Klaus Reimann | 1989-05-09 |
| 4812233 | Apparatus for separating a solid substance from a liquid mixture of substances | Rainer Hagen, Klaus Reimann | 1989-03-14 |
| 4797198 | Process for the working up of salvage oil | Rolf Wetzel, Winfried Kreuch | 1989-01-10 |