Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6789681 | Screen for fiber suspensions and method for the manufacture thereof | Wilhelm Hagen Hutzler, Erwin Mayer, Jochen Gustav Pfeffer | 2004-09-14 |
| 6131743 | Screen basket for fiber suspensions and method for the production thereof | Wilhelm Hagen Hutzler, Jochen Gustav Pfeffer | 2000-10-17 |
| 6068772 | Apparatus for processing fiber suspensions intended for the production of paper or cardboard | Emil Holz, Hagen Hutzler, Jochen Gustav Pfeffer | 2000-05-30 |
| 6029825 | Pressure sorter for sorting fiber suspensions as well as screen for such a pressure sorter | Jochen Gustav Pfeffer | 2000-02-29 |
| 5601192 | Pressure sorter for fiber suspensions | Wilhelm Hagen Hutzler | 1997-02-11 |
| 5566833 | Pressure sorter for fiber suspensions as well as a process for the preparation of fiber suspensions | Jochen Gustav Pfeffer | 1996-10-22 |
| 5358637 | Apparatus for sorting and deflaking fibrous suspensions | Hagen Hutzler | 1994-10-25 |
| 5259512 | Screen for pressure sorters for fiber suspensions | — | 1993-11-09 |