Inventor · disambiguated record
Rafat F. Hattar
Also filed as: HATTAR RAFAT · HATTAR RAFAT F
28 granted patents·7 pending applications·66 citations·filing 2009–2024
94Inventor score
Files withGM GLOBAL TECH OPERATIONS LLC27GM GLOBAL TECH OPERATIONS INC4HATTAR RAFAT F2KWAPIS DEAN R1WHITNEY CHRISTOPHER E1
Top patents by PatentIndex Score
35 records- 0197US10156175B1Method and system for rationalizing a delta pressure sensor for a gasoline particulate filter in a vehicle propulsion systemGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Dec 18, 2018·18 cites·16 claims
- 0291US11913401B1Engine emission control systems for deceleration fuel cutoff events and cold startsGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Granted Feb 27, 2024·2 cites·20 claims
- 0391US10161370B2Systems and methods for performing prognosis of fuel delivery systemsGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Dec 25, 2018·6 cites·17 claims
- 0488US10167803B2Systems and methods for performing prognosis of fuel deliveryGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Jan 1, 2019·4 cites·7 claims
- 0588US10066576B2Dual injection during intake stroke for improved catalyst light offGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Sep 4, 2018·4 cites·19 claims
- 0686US11788455B1Systems and methods for recirculation of engine exhaust gas within an exhaust system having a buffer tankGM GLOBAL TECH OPERATIONS LLC·Filed 2022·Granted Oct 17, 2023·1 cites·16 claims
- 0785US11725601B1Systems and methods for recirculation of engine exhaust gas within an exhaust systemGM GLOBAL TECH OPERATIONS LLC·Filed 2022·Granted Aug 15, 2023·1 cites·20 claims
- 0884US12247504B1Systems and methods for catalyst health diagnosing and fuel system control improvementGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Granted Mar 11, 2025·1 cites·18 claims
- 0981US8838316B2Method of controlling catalyst light-off of a hybrid vehicleGM GLOBAL TECH OPERATIONS INC·Filed 2012·Granted Sep 16, 2014·8 cites·12 claims
- 1076US8950379B2Measured fuel rail pressure adjustment systems and methodsHATTAR RAFAT F·Filed 2012·Granted Feb 10, 2015·5 cites·20 claims
- 1175US10161348B1Method and system for fuel control in a vehicle propulsion systemGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Dec 25, 2018·1 cites·19 claims
- 1275US9200975B2Pressure diagnostic system and methodHATTAR RAFAT F·Filed 2011·Granted Dec 1, 2015·4 cites·20 claims
- 1371US9567915B2System and method for controlling a low pressure pump to prevent vaporization of fuel at an inlet of a high pressure pumpGM GLOBAL TECH OPERATIONS LLC·Filed 2013·Granted Feb 14, 2017·4 cites·20 claims
- 1469US12392300B1Vehicle with gasoline particulate filter soot regeneration strategy with criteria emission reduction for low NOX emissionsGM GLOBAL TECH OPERATIONS LLC·Filed 2024·Granted Aug 19, 2025·0 cites·20 claims
- 1569US10415453B2Active regeneration method for a gasoline particulate filter of an internal combustion engineGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Sep 17, 2019·1 cites·9 claims
- 1669US10167796B2Gasoline particulate filter regeneration strategyGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Jan 1, 2019·1 cites·19 claims
- 1768US8280612B2Multi-pulse enable determination and transition control systems and methodsWHITNEY CHRISTOPHER E·Filed 2009·Granted Oct 2, 2012·4 cites·19 claims
- 1859US11519317B1Engine systems with exhaust air injection after three-way catalytic converters for non stoichiometric rich operationGM GLOBAL TECH OPERATIONS LLC·Filed 2022·Granted Dec 6, 2022·0 cites·20 claims
- 1957US11885250B1Vehicle systems and methods for aftertreatment preheatingGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Granted Jan 30, 2024·0 cites·16 claims
- 2052US9115684B2Engine startup control systems and methodsGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted Aug 25, 2015·0 cites·20 claims
- 2151US12291220B2Systems and methods for collection and analysis of vehicular dataGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Granted May 6, 2025·0 cites·15 claims
- 2251US9228516B2Fuel pump prime activated by door sensorKWAPIS DEAN R·Filed 2012·Granted Jan 5, 2016·1 cites·11 claims
- 2350US10577998B2Method for controlling a regeneration of a particle filter of an internal combustion engineGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Mar 3, 2020·0 cites·10 claims
- 2449US9217386B2System and method for preventing stochastic pre-ignitionGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted Dec 22, 2015·0 cites·20 claims
- 2548US12085035B2Method and system for evaluating a NOx sensorGM GLOBAL TECH OPERATIONS LLC·Filed 2022·Granted Sep 10, 2024·0 cites·15 claims
- 2647US10683820B2Method and system for regenerating a gasoline particulate filter in a vehicle propulsion systemGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Jun 16, 2020·0 cites·6 claims
- 2744US2025137413A1Apparatus and method for controlling intake air temperatureGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Application pending·0 cites
- 2842US11629625B1Systems and methods of engine exhaust air injection before and after catalytic convertersGM GLOBAL TECH OPERATIONS LLC·Filed 2022·Granted Apr 18, 2023·0 cites·16 claims
- 2940US2018347435A1Method of exhaust temperature predictionGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Application pending·0 cites
- 3040US2015039208A1System and method for controlling air flow through an engine based on a fuel injection duration limitGM GLOBAL TECH OPERATIONS INC·Filed 2013·Application pending·0 cites
- 3139US2020116093A1Nox formation prediction for improved catalytic converter controlGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Application pending·0 cites
- 3238US10655550B2Intake manifold and cylinder airflow estimation systems and methodsGM GLOBAL TECH OPERATIONS LLC·Filed 2015·Granted May 19, 2020·0 cites·12 claims
- 3338US2019040812A1Method of diagnosing a high pressure fuel delivery systemGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Application pending·0 cites
- 3438US2019376460A1Remedial action for invalid particulate filter sootGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Application pending·0 cites
- 3536US2019010882A1Method for regenerating a particle filter for an internal combustion engineGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →