Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6802181 | Method and apparatus for monitoring catalyst efficiency and secondary air injection | Wenbo Wang, Matthew Roelle | 2004-10-12 |
| 6694243 | Method and apparatus for determining oxygen storage capacity time of a catalytic converter | Sharanjit Singh, Minghui Kao, David N. Benton, David Dempsey | 2004-02-17 |