Issued Patents All Time
Showing 51–72 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6244047 | Method of purging lean NOx trap | Diana Brehob, Todd Kappauf | 2001-06-12 |
| 6199373 | Method and apparatus for desulfating a NOx trap | Garth Michael Meyer, Joseph R. Asik | 2001-03-13 |
| 6167696 | Exhaust gas purification system for low emission vehicle | Frode Maaseidvaag | 2001-01-02 |
| 6164065 | After treatment system for a variable displacement engine | John Denari | 2000-12-26 |
| 5998210 | Method and apparatus for aging a catalyst | Douglas Allen Dobson, Robert Joseph Jerger | 1999-12-07 |
| 5979159 | Exhaust after-treatment system for automotive vehicle | Andrew A. Adamczyk, Jr. | 1999-11-09 |
| 5974788 | Method and apparatus for desulfating a no.sub.x trap | Garth Michael Meyer, Joseph R. Asik | 1999-11-02 |
| 5939037 | Sulfur tolerant NO.sub.x traps highly loaded with sodium or potassium | William L. H. Watkins | 1999-08-17 |
| 5910096 | Temperature control system for emission device coupled to direct injection engines | Richard Baker | 1999-06-08 |
| 5855113 | Method and system for controlling the temperature of an exhaust system having a variable length exhaust pipe | Michael John Cullen | 1999-01-05 |
| 5837212 | Potassium/manganese nitrogen oxide traps for lean-burn engine operation | Eva Thanasiu, William L. H. Watkins, Carolyn Parks Hubbard, Douglas Allen Dobson, Haren Sakarlal Gandhi | 1998-11-17 |
| 5832722 | Method and apparatus for maintaining catalyst efficiency of a NO.sub.x trap | Michael John Cullen, David George Farmer, Arnold W. Brandt | 1998-11-10 |
| 5798270 | Assembly and method for monitoring hydrocarbon concentration in exhaust gas | Andrew A. Adamczyk, Jr., James David Pakko | 1998-08-25 |
| 5771685 | Method for monitoring the performance of a NO.sub.x trap | — | 1998-06-30 |
| 5772972 | Catalyst/hydrocarbon trap hybrid system | Hung-Wen Jen, Harendra S. Gandhi, Klaus Otto | 1998-06-30 |
| 5758489 | Sulfur tolerant Pt/lithium NOx traps | William L. H. Watkins | 1998-06-02 |
| 5750082 | Nox trap with improved performance | Eva Thanasiu, William L. H. Watkins, Carolyn Parks Hubbard, Douglas Allen Dobson, Haren Sakarlal Gandhi | 1998-05-12 |
| 5743084 | Method for monitoring the performance of a no.sub.x trap | — | 1998-04-28 |
| 5727385 | Lean-burn nox catalyst/nox trap system | — | 1998-03-17 |
| 5626014 | Catalyst monitor based on a thermal power model | Allen H. Meitzler | 1997-05-06 |
| 5524433 | Methods and apparatus for monitoring the performance of hydrocarbon engine emission trapping devices | Andrew A. Adamczyk, Jr. | 1996-06-11 |
| 5433071 | Apparatus and method for controlling noxious components in automotive emissions using a conditioning catalyst for removing hydrogen | Raymond L. Willey, Robert Walter McCabe | 1995-07-18 |