Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6598470 | Method for the testing of an exhaust gas recirculation system | Wolfgang Ludwig, Hong Zhang | 2003-07-29 |
| 6588251 | Method for checking the dynamic behavior of a measuring sensor in the exhaust tract of an internal combustion engine | Hong Zhang, Jürgen Rössler | 2003-07-08 |