Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11002171 | Exhaust heat recovery and acoustic valve with exhaust gas recirculation features | Hans-Christoph Hossfeld | 2021-05-11 |
| 10941693 | Vehicle frame with acoustic volume for an exhaust system | James Egan | 2021-03-09 |