Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4722784 | Method and apparatus for the flotation of dispersions | — | 1988-02-02 |
| 4721562 | Aerating apparatus | Horst von Borries, Robert Rautenbach, August Schiffermuller, Hubert Zimmermann, Jean-Pierre Lamort | 1988-01-26 |
| 4347128 | Flotation apparatus for de-inking pulp suspensions | — | 1982-08-31 |
| 4331534 | Method of and arrangement for the de-inking of pulp suspensions | — | 1982-05-25 |