Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5334285 | Process for the treatment of wastepaper using drum soaker | Herbert Ortner, Walter Musselmann | 1994-08-02 |
| 5255788 | Pressure sorter | Reimund Rienecker, Peter Schweiss | 1993-10-26 |
| 5201423 | Fiber suspensions sorter having a plurality of screen baskets | Reimund Rienecker, Peter Schweiss | 1993-04-13 |
| 5197200 | Device for the measurement of the diameter of cylinders | Peter Biener, Gerd Krattenmacher | 1993-03-30 |
| 4932794 | Bearing segment for trunnion bearings | Heinz Keck | 1990-06-12 |
| 4818338 | Method for emptying suspension for a pulper | Helmut Thumm, Walter Musselmann | 1989-04-04 |
| 4800687 | Method for cylindrical grinding of rolls | Werner Kade, Georg Zurn, Gunter Rohde | 1989-01-31 |
| 4781835 | Disk concentrators | Rolf Laible, Ference Bilics | 1988-11-01 |
| 4773989 | Process for the preparation of fibrous suspensions in hydrocyclones | Lothar Pfalzer | 1988-09-27 |
| 4634059 | Method and device for emptying suspension from a pulper | Helmut Thumm, Walter Musselmann | 1987-01-06 |
| 4592513 | Pulper device | Walter Musselmann, Helmut Thumm | 1986-06-03 |
| 4460132 | Pulper for producing paper pulp suspensions | Helmut Thumm, Herbert Ortner | 1984-07-17 |
| 4456182 | Pulp grinder with liquid retention | Richard Suttinger, Ernst Bottger, Hans-Otto Henrich, Helmut Thumm | 1984-06-26 |
| 4420117 | Waste paper disintegrating, sorting and fiber recovery apparatus | Fritz Peroutka, Helmut Thumm, Walter Stricker | 1983-12-13 |
| 4405091 | Apparatus for the production of mechanical wood pulp | Hans-Otto Heinrich, Helmut Thumm | 1983-09-20 |
| 4401277 | Apparatus for producing mechanical wood pulp | Helmut Thumm, Hans-Otto Henrich | 1983-08-30 |
| 4368101 | Method and apparatus for the production of a suspension of fibrous material made from waste-paper | Lothar Pfalzer | 1983-01-11 |
| 4351486 | Process and a grinding stone for preparing mechanical wood pulp | Karl-Heinz Schmoller, Ernst Bottger, Hans-Otto Henrich, Helmut Thumm, Heinz Beck | 1982-09-28 |
| 4231526 | Process and apparatus for treating waste paper | Herbert Ortner, Walter Musselmann | 1980-11-04 |