Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6391151 | Process for dissolving used paper | Jürgen Dockal-Baur, Axel Gommel, Wolfgang Muller, Andreas Steidele, Klaus Steinbild | 2002-05-21 |
| 6183595 | Process for treating a fibrous material suspension using combination of low-intensity and high-intensity flotation | Herbert Britz, Herbert Holik, Martin Kemper, Thomas Martin, Anton Selbherr | 2001-02-06 |
| 5958179 | Process for increasing pulp whiteness by bleaching printed wastepaper under intense dispersing mechanical treatment | Volker Gehr | 1999-09-28 |
| 4999084 | Method for heat treating short fiber fractions after separation of the long fiber fractions from a secondary fiber mixture | Heinrich Lang | 1991-03-12 |
| 4921573 | Method of regulating the specific dispersion work for waste paper stock preparation for papermaking | Dietmar Beier, Jurgen Gutzeit | 1990-05-01 |
| 4909900 | Method for high temperature, high consistency quick bleaching of raw paper pulp | Wolfgang Matzke | 1990-03-20 |
| 4431482 | Dispersion apparatus for the preparation of waste paper | Wolfgang Heinbockel, Erich Linck | 1984-02-14 |
| 4405450 | Method for fractionating fiber stock obtained from waste paper and apparatus for the performance of the aforesaid method | — | 1983-09-20 |
| 4387856 | Method for operating an installation for processing waste paper | — | 1983-06-14 |