Issued Patents 2023
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11788455 | Systems and methods for recirculation of engine exhaust gas within an exhaust system having a buffer tank | Chengke Liu | 2023-10-17 |
| 11725601 | Systems and methods for recirculation of engine exhaust gas within an exhaust system | Chengke Liu | 2023-08-15 |
| 11629625 | Systems and methods of engine exhaust air injection before and after catalytic converters | Chengke Liu, John Michael Ellenberger, Philipp A Seyfried | 2023-04-18 |