Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12201928 | Reinforced air filter | — | 2025-01-21 |
| 12076680 | Air filter with different diameter glue beads | — | 2024-09-03 |
| 11719454 | System and method for optimizing selection of an air filter | — | 2023-08-08 |
| 11638893 | Reinforced air filter | — | 2023-05-02 |
| 10527537 | System and method for optimizing selection of an air filter | Hans-Joachim Lippold | 2020-01-07 |
| 10143951 | Embossed fluid filter treatment | Hans-Joachim Lippold | 2018-12-04 |
| 9546942 | System and method for optimizing selection of an air filter | Hans-Joachim Lippold | 2017-01-17 |
| 9314717 | Embossed fluid filter element | Hans-Joachim Lippold | 2016-04-19 |
| 8328896 | Frame for filter pack | — | 2012-12-11 |
| 5804073 | Method of making a pleated structure having a pleated memory shape and the filter media made therefrom | — | 1998-09-08 |
| 5674303 | Filter assembly | — | 1997-10-07 |