Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4634060 | Processing and sorting of refuse | Hanns-Helmut Riemann, Heinz-Josef Skaletz | 1987-01-06 |
| 4622183 | Device for transferring cooling water of a wet or wet/dry cooling tower to recirculation means | Paul Paikert | 1986-11-11 |
| 4509697 | Rotary drum screen for waste material and its method of operation | Hanns-Helmut Riemann, Heinz-Josef Skaletz | 1985-04-09 |
| 4445906 | Process for the treatment of the combustible portion of domestic waste for briquetting and apparatus therefor | Hanns-Helmut Riemann | 1984-05-01 |
| 4406031 | Cleaning member for cleaning the interior of heat exchanger tubes | Klaus Eimer, Felix Kraker, Hans-Werner Schildmann, Gunther Schmitz | 1983-09-27 |