Issued Patents All Time
Showing 1–22 of 22 patents
| 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 |
| 10584623 | Exhaust heat recovery and acoustic valve | — | 2020-03-10 |
| 9970340 | Vehicle exhaust system with resonance damping | Kwin Abram, Tommy Pham | 2018-05-15 |
| 9816428 | Exhaust manifold with turbo support | — | 2017-11-14 |
| 9599008 | Thermal isolation disc for silencer | — | 2017-03-21 |
| 9376947 | Hybrid valve for attenuation of low frequency noise | Kwin Abram, Robin Willats | 2016-06-28 |
| 8800713 | Plastic muffler with Helmholtz chamber | Thorsten Keesser, Robin Willats, Dennis Boennen | 2014-08-12 |
| 8739923 | Muffler for vehicle exhaust system | — | 2014-06-03 |
| 8683789 | Exhaust valve assembly with intermediate position | Robin Willats, Kwin Abram | 2014-04-01 |
| 8453672 | Passive valve for attenuation of low frequency noise | Kwin Abram, Robin Willats, Ivan Arbuckle | 2013-06-04 |
| 8365522 | Dual exhaust system with independent valve control | Kwin Abram, Ivan Arbuckle, James Egan, Robin Willats | 2013-02-05 |
| 8191581 | Wire tube structure for exhaust component | Kwin Abram | 2012-06-05 |
| 8025121 | Tube structure for exhaust component | David J. Leehaug | 2011-09-27 |
| 7628250 | Passive valve assembly for vehicle exhaust system | Kwin Abram, Ivan Arbuckle | 2009-12-08 |
| 7584938 | Side loaded valve assembly | Kwin Abram, Ivan Arbuckle, Robin Willats | 2009-09-08 |
| 7581710 | Thermally isolated actuator with temporary contacting linkage for an exhaust valve | Kwin Abram, Robin Willats, David Lee McCrary | 2009-09-01 |
| 7575096 | Pressed assembly for passive valve installation | Ivan Arbuckle, Robin Willats, Anthony Morales | 2009-08-18 |
| 7536990 | Hybrid exhaust valve assembly | Robin Willats, Kwin Abram | 2009-05-26 |
| 7428947 | Electrically controlled in-muffler exhaust valve for use during cylinder deactivation | John Nohl, David R. Woemer | 2008-09-30 |
| 7401592 | Hybrid exhaust valve assembly | Robin Willats, Kwin Abram, Govindaraj Kalyanasamy | 2008-07-22 |
| 7243623 | Velocity control of exhaust valve actuation | Kwin Abram | 2007-07-17 |