Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10695705 | Air filter comprising a multilayer filter material | Martin Hein, Birgit Renz | 2020-06-30 |
| 10399027 | Air filter comprising a multilayer filter material | Markus Michael, Birgit Renz | 2019-09-03 |