Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11149699 | Filter element for an engine air filter assembly having a nonwoven pre-filter and related method | Jerome Stiger | 2021-10-19 |
| 10898842 | Filter element, in particular for gas filtration | Torsten Fritzsching, Pedro Miguel Pereira Madeira, Andreas Franz, Nadine Donauer, Martin Gruber +2 more | 2021-01-26 |