Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865743 | Method for production of solution-diffusion membranes and their application for pervaporation | Guido Ellinghorst, Bernd Goetz, Axel Niemoeller, Hartmut E. A. Brueschke, Guenter F. Tusel | 1989-09-12 |
| 4819779 | Centrifugal clutch | Hans Nickel, Michael Wissmann | 1989-04-11 |