Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6980903 | Exhaust gas control using a spark plug ionization signal | Guoming G. Zhu | 2005-12-27 |
| 6922628 | IC engine diagnostic system using the peak and integration ionization current signals | Guoming G. Zhu | 2005-07-26 |