Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8869607 | Exhaust diagnostic system and method with SCR NH3 depletion cleansing mode for initial step in the def quality service healing test | Stephen Paul Levijoki, Justin Adam Shetney, Paul Jasinkiewicz | 2014-10-28 |
| 8495862 | System and method for detecting low quality reductant and catalyst degradation in selective catalytic reduction systems | Stephen Paul Levijoki, Yue Wang | 2013-07-30 |
| 8353202 | Exhaust diagnostic systems and methods with SCR conversion efficiency monitor disabling | Stephen Paul Levijoki | 2013-01-15 |
| 8286419 | Exhaust diagnostic systems and methods for resetting after operation with poor reductant quality | Stephen Paul Levijoki, Scott R. Gordon, Cheryl J. Stark, Paul Jasinkiewicz | 2012-10-16 |
| 8131416 | Glow plug control dual mode fault diagnostics | — | 2012-03-06 |