Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9863922 | NOx sensor calibration and application in lean NOx trap aftertreat systems | Gongshin Qi | 2018-01-09 |
| 9714625 | System and method for controlling ammonia levels in a selective catalytic reduction catalyst using a nitrogen oxide sensor | Min Sun, Donovan L. Dibble, Chang Hwan Kim, Mary Beth Furness | 2017-07-25 |
| 9188071 | System and method for controlling an engine based on ammonia storage in multiple selective catalytic reduction catalysts | Min Sun | 2015-11-17 |
| 9180408 | Fuel efficient ammonia generation strategy for lean-burn engines utilizing passive NH3-SCR for the control of NOx | Wei Li, Kushal Narayanaswamy, Paul M. Najt | 2015-11-10 |
| 8919099 | System and method for determining an ammonia generation rate in a three-way catalyst | Min Sun, Chang Hwan Kim | 2014-12-30 |
| 8745969 | Methods for engine exhaust NOx control using no oxidation in the engine | Thompson M. Sloane, Wei Li, David Cleary, Michael B. Viola, David R. Monroe | 2014-06-10 |
| 8539760 | Catalyst materials for NOx oxidation in an exhaust aftertreatment system that uses passive ammonia SCR | Wei Li, Chang Hwan Kim, Paul M. Najt, Kushal Narayanaswamy | 2013-09-24 |
| 8448423 | Method and apparatus for controlling operation of a spark-ignition direct-injection engine | Paul M. Najt, Kushal Narayanaswamy, Wei Li, David Cleary, James Donald Smith | 2013-05-28 |
| 8393140 | Passive ammonia-selective catalytic reduction for NOx control in internal combustion engines | Karthik Ramanathan, Ashok Gopinath, Steven J. Schmieg | 2013-03-12 |
| 8381512 | Passive ammonia-selective catalytic reduction for NOx control in internal combustion engines | Norman D. Brinkman, Paul M. Najt, Kushal Narayanaswamy, David Brown, Wei Li +2 more | 2013-02-26 |
| 8302379 | Passive ammonia-selective catalytic reduction for NOx control in internal combustion engines | Kushal Narayanaswamy, Paul M. Najt, Wei Li, Steven J. Schmieg | 2012-11-06 |
| 8291695 | Method and apparatus for controlling exhaust emissions in a spark-ignition direct-injection engine | Thompson M. Sloane, Jong-Hwan Lee, Kushal Narayanaswamy, Wei Li, Paul M. Najt | 2012-10-23 |
| 8225599 | Method for supplying reductant to an aftertreatment system | Thompson M. Sloane, Jong-Hwan Lee | 2012-07-24 |
| 8216521 | Method and apparatus for ammonia formation in a catalytic converter | Wei Li, Paul M. Najt, Kushal Narayanaswamy, Chang Hwan Kim | 2012-07-10 |
| 8109081 | Hydrocarbon selective catalytic reduction for NOx control with gasoline-fueled spark ignition engines using engine-out hydrocarbons | Thompson M. Sloane, Norman D. Brinkman, Paul M. Najt | 2012-02-07 |
| 8091342 | Technique for production of ammonia on demand in a three way catalyst for a passive selective catalytic reduction system | David Cleary, Kushal Narayanaswamy, Paul M. Najt, Wei Li, James Donald Smith +2 more | 2012-01-10 |