Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6789681 | Screen for fiber suspensions and method for the manufacture thereof | Erich Czerwoniak, Wilhelm Hagen Hutzler, Erwin Mayer | 2004-09-14 |
| 6131743 | Screen basket for fiber suspensions and method for the production thereof | Erich Czerwoniak, Wilhelm Hagen Hutzler | 2000-10-17 |
| 6068772 | Apparatus for processing fiber suspensions intended for the production of paper or cardboard | Erich Czerwoniak, Emil Holz, Hagen Hutzler | 2000-05-30 |
| 6029825 | Pressure sorter for sorting fiber suspensions as well as screen for such a pressure sorter | Erich Czerwoniak | 2000-02-29 |
| 5566833 | Pressure sorter for fiber suspensions as well as a process for the preparation of fiber suspensions | Erich Czerwoniak | 1996-10-22 |