Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6474319 | Filter system for the removal of hydrocarbon deposits from a cooled exhaust gas recirculating engine | Cheng G. Li, Ying Zhou | 2002-11-05 |
| 6464268 | High strength radial flange coupling | Raymond L. Burnett | 2002-10-15 |
| 5063736 | Particulate filter trap load regeneration system | Paul R. Miller | 1991-11-12 |
| 4993452 | Low pressure check valve | — | 1991-02-19 |