Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9181844 | Diagnostic system and method for an oxygen sensor positioned downstream from a catalytic converter | Stephen Paul Levijoki, Michael John Dokter, John W. Siekkinen | 2015-11-10 |
| 8583349 | Systems and methods for diagnosing oxygen sensors and catalytic converters of exhaust systems | Igor Anilovich, John W. Siekkinen, Wesley W. Wald, Robert J. Genslak, John F. Van Gilder | 2013-11-12 |
| 8086392 | Post oxygen sensor performance diagnostic with minimum air flow | Igor Anilovich, Richard B. Jess, John W. Siekkinen, Christopher E. Whitney, Robert C. Simon, Jr. | 2011-12-27 |
| 7900439 | Exhaust system monitoring methods and systems | Robert J. Genslak, Igor Anilovich, Justin F. Adams, Edward Stuteville, Wesley W. Wald +1 more | 2011-03-08 |
| 6586711 | Current control method for an oxygen sensor heater | Christopher E. Whitney, Yonas Nebiyeloul-Kifle, Bradley E. De Pottey | 2003-07-01 |