Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8082986 | Filtering device, especially for use as a well screen filter | Astrid Walch, Martin Bergmann | 2011-12-27 |
| 8062604 | Filter element | — | 2011-11-22 |
| 7981274 | Catalytic element | Manfred Nacken | 2011-07-19 |
| 7879758 | Catalytically active porous element | Manfred Nacken | 2011-02-01 |