Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061318 | Method and apparatus for continuously variable differential phasing of engine valve operation | Paul M. Najt, Craig D. Marriott, Junseok Chang | 2011-11-22 |
| 8041498 | Lean nitrogen oxide emission control system and method | David Brown, Wei Li | 2011-10-18 |
| 8001768 | Method and apparatus for managing an exhaust gas feedstream for a spark-ignition direct-injection engine | Calvin K. Koch, Wei Li | 2011-08-23 |