Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6311850 | Pressure screening apparatus for screening a paper stock suspension and screen clearer for such a screening apparatus | Hans-Joachim Friedrich, Josef Bruckner | 2001-11-06 |
| 6047834 | Process for the manufacture of a sifting device with slit-shaped openings and an appropriately manufactured sifting device | Klaus Dolle, Rudolf Kleinert, Joachim Nittke, Reimund Rienecker, Peter Schweiss | 2000-04-11 |
| 5611434 | Rotor for a screen grader | Jurgen Oerter | 1997-03-18 |
| 5465848 | Flotation cell and injector | Peter Schweib, Hans-Dieter Dorflinger | 1995-11-14 |