Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6736881 | Method and arrangement for cleaning pipe-shaped filter elements | Robert Mai, Bernd Zimmerlin, Karsten Schulz | 2004-05-18 |
| 6558443 | Method and arrangement for cleaning filters | — | 2003-05-06 |
| 6299660 | Accordion filter with a protective mask | Peter Pfeuffer, Hans-Joachim Lippold, Markus Fronhofer | 2001-10-09 |
| 5112585 | Process of removing flue gas cleaning residues during the wet cleaning of flue gases by drying and construction | Friedrich Dirks, Ortwin Batsch, Wilhelm Hempelmann | 1992-05-12 |
| 4728426 | Filter pack | Volker Rudinger, Ulrich Schlor, Werner Alken | 1988-03-01 |