Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6068772 | Apparatus for processing fiber suspensions intended for the production of paper or cardboard | Erich Czerwoniak, Emil Holz, Jochen Gustav Pfeffer | 2000-05-30 |
| 5358637 | Apparatus for sorting and deflaking fibrous suspensions | Erich Czerwoniak | 1994-10-25 |
| 4632320 | Apparatus for dissolving and sorting waste paper | Emil Holz | 1986-12-30 |
| 4566942 | Method of and apparatus for treating waste paper | Emil Holz | 1986-01-28 |
| 4465591 | Method and apparatus for treating waste paper | Emil Holz | 1984-08-14 |