Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8707807 | Particulate filter diagnostics | Pranati Yadav, Joan M. Wills, Daniel R. Hashbarger, Ross C. Berryhill, Dean H. Dringenburg | 2014-04-29 |
| 8700360 | System and method for monitoring and detecting faults in a closed-loop system | Howard Bishop | 2014-04-15 |
| 8677748 | Fresh air flow estimation | Indranil Brahma, Ashwin Vyas, Vivek A. Sujan, John N. Chi, Abdoul Karim Abdoul Azizou | 2014-03-25 |
| 8640445 | Multi-leg exhaust after-treatment system and method | Ousmane Gueye, Anita Singhal, Randy W. Nelson, Axel O. zur Loye | 2014-02-04 |
| 8356471 | Apparatus, system, and method for controlling reductant dosing in an SCR catalyst system | John N. Chi, Weiwen Wang, Joe V. Hill | 2013-01-22 |
| 8256208 | Apparatus, system, and method for reducing NOx emissions on an SCR catalyst | Joan M. Wills, John N. Chi, Weiwen Wang, Timothy R. Frazier, Abdul R. Ofoli +5 more | 2012-09-04 |
| 8225595 | Apparatus, system, and method for estimating an NOx conversion efficiency of a selective catalytic reduction catalyst | Andy Osburn, John N. Chi, Joan M. Wills | 2012-07-24 |
| 8181450 | Apparatus, system, and method for reducing NOx emissions on an SCR catalyst using ammonia storage and slip control | Abdul R. Ofoli, Timothy R. Frazier, Joan M. Wills, John N. Chi, Weiwen Wang +1 more | 2012-05-22 |
| 8161730 | Apparatus, system, and method for reducing NOx emissions on an SCR catalyst | John N. Chi, Weiwen Wang, Joan M. Wills, Joe V. Hill, Lisa A. Farrell +1 more | 2012-04-24 |
| 8141340 | Apparatus, system, and method for determining the degradation of an SCR catalyst | Joan M. Wills, John N. Chi, Neal W. Currier, Aleksey Yezerets | 2012-03-27 |
| 8109079 | Apparatus, system, and method for controlling ammonia slip from an SCR catalyst | Joan M. Wills, John N. Chi | 2012-02-07 |
| 8074445 | Apparatus, system, and method for reducing NOx emissions on an SCR catalyst | Abdul R. Ofoli, John N. Chi | 2011-12-13 |