RH

Rafat F. Hattar

General Motors: 25 patents #479 of 18,328Top 3%
📍 Royal Oak, MI: #28 of 1,428 inventorsTop 2%
🗺 Michigan: #2,385 of 86,293 inventorsTop 3%
Overall (All Time): #134,272 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDate
12392300 Vehicle with gasoline particulate filter soot regeneration strategy with criteria emission reduction for low NOX emissions Chengke Liu, Sergio Quelhas 2025-08-19
12291220 Systems and methods for collection and analysis of vehicular data Janean Ellen Potter, Erika L Pruski 2025-05-06
12247504 Systems and methods for catalyst health diagnosing and fuel system control improvement Chengke Liu, Janean Ellen Potter, Erika L Pruski 2025-03-11
12085035 Method and system for evaluating a NOx sensor Erika L Pruski, Janean Ellen Potter 2024-09-10
11913401 Engine emission control systems for deceleration fuel cutoff events and cold starts Chengke Liu, Vijay Ramappan, Jeffrey M. Kaiser, Joseph Shelton 2024-02-27
11885250 Vehicle systems and methods for aftertreatment preheating Vijay Ramappan 2024-01-30
11788455 Systems and methods for recirculation of engine exhaust gas within an exhaust system having a buffer tank Chengke Liu 2023-10-17
11725601 Systems and methods for recirculation of engine exhaust gas within an exhaust system Chengke Liu 2023-08-15
11629625 Systems and methods of engine exhaust air injection before and after catalytic converters Chengke Liu, 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 Chengke Liu 2022-12-06
10683820 Method and system for regenerating a gasoline particulate filter in a vehicle propulsion system 2020-06-16
10655550 Intake manifold and cylinder airflow estimation systems and methods Christopher E. Whitney, Layne K. Wiggins, Gary Robert Cygan, Jr., Ning Jin, Gregory P. Matthews 2020-05-19
10577998 Method for controlling a regeneration of a particle filter of an internal combustion engine Alexander Michel, Jochen Grieser, Daniel Siebert, Maximilian Melling, Simon Schiesser +1 more 2020-03-03
10415453 Active regeneration method for a gasoline particulate filter of an internal combustion engine Alexander Michel, Simon Schiesser, Nils Oth, Markus Kraft 2019-09-17
10167803 Systems and methods for performing prognosis of fuel delivery Azeem Sarwar, Chaitanya Sankavaram, Ian J. MacEwen, Steven Ward Majors, Scott Jeffrey 2019-01-01
10167796 Gasoline particulate filter regeneration strategy Alexander Michel, Simon Schiesser, Nils Oth, Markus Kraft 2019-01-01
10161370 Systems and methods for performing prognosis of fuel delivery systems Azeem Sarwar, Chaitanya Sankavaram, Matthew Hamilton, Jonathan Pung 2018-12-25
10161348 Method and system for fuel control in a vehicle propulsion system Andrew Shaw, Matthew Hamilton 2018-12-25
10156175 Method and system for rationalizing a delta pressure sensor for a gasoline particulate filter in a vehicle propulsion system 2018-12-18
10066576 Dual injection during intake stroke for improved catalyst light off Jesse M. Gwidt, Jeffrey M. Hutmacher 2018-09-04
9567915 System and method for controlling a low pressure pump to prevent vaporization of fuel at an inlet of a high pressure pump Brian L. O'Hear, Phillip J. Baranek, Richard R. Shippy 2017-02-14
9228516 Fuel pump prime activated by door sensor Dean R. Kwapis, Maher El-Jaroudi, Timothy J. Braman 2016-01-05
9217386 System and method for preventing stochastic pre-ignition Dean R. Kwapis, Kevin M. Luchansky, J. Michael Gwidt 2015-12-22
9200975 Pressure diagnostic system and method Jeffrey M. Hutmacher, Paul D. Donar, Matthew Hamilton 2015-12-01
9115684 Engine startup control systems and methods J. Michael Gwidt, Bradford W. Bur 2015-08-25