Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6990800 | Diesel aftertreatment systems | Michiel J. Van Nieuwstadt, Fumin Yuan | 2006-01-31 |
| 6990854 | Active lean NOx catalyst diagnostics | Michiel J. Van Nieuwstadt, Fumin Yuan | 2006-01-31 |
| 6453663 | NOx sensor monitoring | Daniel V. Orzel, Timothy Joseph Clark, William Najib Mansur | 2002-09-24 |