Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5407268 | Kneader for the treatment of fibrous pulp suspensions | — | 1995-04-18 |
| 4840317 | Wood pulp grinder | — | 1989-06-20 |
| 4726897 | Flotation container or cell | Peter Schweiss, Hans-Dieter Dorflinger | 1988-02-23 |
| 4710287 | Fibrous suspension pressurized sorter | Reimund Rienecker | 1987-12-01 |
| 4456182 | Pulp grinder with liquid retention | Richard Suttinger, Ernst Bottger, Theodor Bahr, Helmut Thumm | 1984-06-26 |
| 4401277 | Apparatus for producing mechanical wood pulp | Helmut Thumm, Theodor Bahr | 1983-08-30 |
| 4351486 | Process and a grinding stone for preparing mechanical wood pulp | Karl-Heinz Schmoller, Theodor Bahr, Ernst Bottger, Helmut Thumm, Heinz Beck | 1982-09-28 |
| 4257563 | Apparatus and process for producing wood pulp in a pressurized wood grinder | — | 1981-03-24 |