| 12392300 |
Vehicle with gasoline particulate filter soot regeneration strategy with criteria emission reduction for low NOX emissions |
Sergio Quelhas, Rafat F. Hattar |
2025-08-19 |
| 12247504 |
Systems and methods for catalyst health diagnosing and fuel system control improvement |
Rafat F. Hattar, Janean Ellen Potter, Erika L Pruski |
2025-03-11 |
| 11913401 |
Engine emission control systems for deceleration fuel cutoff events and cold starts |
Vijay Ramappan, Rafat F. Hattar, Jeffrey M. Kaiser, Joseph Shelton |
2024-02-27 |
| 11788455 |
Systems and methods for recirculation of engine exhaust gas within an exhaust system having a buffer tank |
Rafat F. Hattar |
2023-10-17 |
| 11725601 |
Systems and methods for recirculation of engine exhaust gas within an exhaust system |
Rafat F. Hattar |
2023-08-15 |
| 11629625 |
Systems and methods of engine exhaust air injection before and after catalytic converters |
Rafat F. Hattar, John Michael Ellenberger, Philipp A Seyfried |
2023-04-18 |
| 11519317 |
Engine systems with exhaust air injection after three-way catalytic converters for non stoichiometric rich operation |
Rafat F. Hattar |
2022-12-06 |
