Cold start control systems and methods
US-12583437-B2 · Mar 24, 2026 · US
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Hattar Rafat F patents
Hattar Rafat F is listed as an inventor on 43 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Hattar Rafat F |
| Total patents | 43 |
| First publication | Feb 5, 2015 |
| Latest publication | Mar 24, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Cold start control systems and methods
US-2025388205-A1 · Dec 25, 2025 · US
Vehicle with gasoline particulate filter soot regeneration strategy with criteria emission reduction for low NOX emissions
US-12392300-B1 · Aug 19, 2025 · US
Systems and methods for collection and analysis of vehicular data
US-12291220-B2 · May 6, 2025 · US
Apparatus and method for controlling intake air temperature
US-2025137413-A1 · May 1, 2025 · US
Systems and methods for catalyst health diagnosing and fuel system control improvement
US-2025092814-A1 · Mar 20, 2025 · US
Systems and methods for catalyst health diagnosing and fuel system control improvement
US-12247504-B1 · Mar 11, 2025 · US
Method and system for evaluating a NOx sensor
US-12085035-B2 · Sep 10, 2024 · US
Systems and methods for collection and analysis of vehiclular data
US-2024278793-A1 · Aug 22, 2024 · US
METHOD AND SYSTEM FOR EVALUATING A NOx SENSOR
US-2024159197-A1 · May 16, 2024 · US
Recent patents
Latest publications not already listed above.
Engine emission control systems for deceleration fuel cutoff events and cold starts
US-11913401-B1 · Feb 27, 2024 · US
Vehicle systems and methods for aftertreatment preheating
US-11885250-B1 · Jan 30, 2024 · US
Systems and methods for recirculation of engine exhaust gas within an exhaust system having a buffer tank
US-11788455-B1 · Oct 17, 2023 · US
Systems and methods for recirculation of engine exhaust gas within an exhaust system
US-11725601-B1 · Aug 15, 2023 · US
Systems and methods of engine exhaust air injection before and after catalytic converters
US-11629625-B1 · Apr 18, 2023 · US
Engine systems with exhaust air injection after three-way catalytic converters for non stoichiometric rich operation
US-11519317-B1 · Dec 6, 2022 · US
Method and system for regenerating a gasoline particulate filter in a vehicle propulsion system
US-10683820-B2 · Jun 16, 2020 · US
Intake manifold and cylinder airflow estimation systems and methods
US-10655550-B2 · May 19, 2020 · US
Nox formation prediction for improved catalytic converter control
US-2020116093-A1 · Apr 16, 2020 · US
Method for controlling a regeneration of a particle filter of an internal combustion engine
US-10577998-B2 · Mar 3, 2020 · US
Remedial action for invalid particulate filter soot
US-2019376460-A1 · Dec 12, 2019 · US
Active regeneration method for a gasoline particulate filter of an internal combustion engine
US-10415453-B2 · Sep 17, 2019 · US
Method and system for regenerating a gasoline particulate filter in a vehicle propulsion system
US-2019234329-A1 · Aug 1, 2019 · US
Active regeneration method for a gasoline particulate filter of an internal combustion engine
US-2019063295-A1 · Feb 28, 2019 · US
Method of diagnosing a high pressure fuel delivery system
US-2019040812-A1 · Feb 7, 2019 · US
Gasoline particulate filter regeneration strategy
US-10167796-B2 · Jan 1, 2019 · US
Systems and methods for performing prognosis of fuel delivery
US-10167803-B2 · Jan 1, 2019 · US
Method and system for fuel control in a vehicle propulsion system
US-10161348-B1 · Dec 25, 2018 · US
Method and system for rationalizing a delta pressure sensor for a gasoline particulate filter in a vehicle propulsion system
US-10156175-B1 · Dec 18, 2018 · US
Method of exhaust temperature prediction
US-2018347435-A1 · Dec 6, 2018 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Gm Global Tech Operations Llc | 37 |
| Gm Global Tech Operations Inc | 5 |
| Hattar Rafat F | 3 |
| Hutmacher Jeffrey M | 2 |
| Donar Paul D | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| Y02T10/40 | 20 |
| F01N2900/08 | 13 |
| F02D2200/0802 | 12 |
| F01N9/002 | 11 |
| F01N11/00 | 10 |