Inventor · disambiguated record
Patrick G. Szymkowicz
Also filed as: SZYMKOWICZ PATRICK G
19 granted patents·3 pending applications·300 citations·filing 2002–2023
94Inventor score
Files withGM GLOBAL TECH OPERATIONS INC9GEN MOTORS CORP3GM GLOBAL TECH OPERATIONS LLC3KNAFL ALEXANDER3BALESTRINO SANDRO R1
Top patents by PatentIndex Score
22 records- 0197US6915629B2After-treatment system and method for reducing emissions in diesel engine exhaustGEN MOTORS CORP·Filed 2002·Granted Jul 12, 2005·107 cites·29 claims
- 0296US7231906B1Simultaneous EGR correction and individual cylinder combustion phase balancingGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Jun 19, 2007·46 cites·19 claims
- 0392US6907725B2Method for reducing engine exhaust emissionsGEN MOTORS CORP·Filed 2003·Granted Jun 21, 2005·53 cites·10 claims
- 0489US7594493B2Method for controlling fuel injection in a compression ignition engineGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Sep 29, 2009·15 cites·15 claims
- 0586US11802502B1Hydrocarbon adsorption and desorption control in vehicle exhaust systems using H2O trapsGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Granted Oct 31, 2023·1 cites·20 claims
- 0686US7231905B1Internal combustion engine exhaust gas recirculation controlGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Jun 19, 2007·19 cites·21 claims
- 0781US9551248B2Method and apparatus to recover exhaust gas recirculation coolersGM GLOBAL TECH OPERATIONS LLC·Filed 2013·Granted Jan 24, 2017·5 cites·20 claims
- 0879US8615983B2Heat exchanger method and apparatus for engine exhaust gas recirculation systemKNAFL ALEXANDER·Filed 2010·Granted Dec 31, 2013·5 cites·6 claims
- 0976US8820301B2Modulating hydrodynamic flow characteristics to alleviate automotive heat exchanger contaminationKNAFL ALEXANDER·Filed 2010·Granted Sep 2, 2014·4 cites·13 claims
- 1074US8146555B2Direct-injection spark-ignition systemSOLOMON ARUN S·Filed 2008·Granted Apr 3, 2012·11 cites·19 claims
- 1174US7418336B2Method for internal combustion engine control using pressure ratiosGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Aug 26, 2008·6 cites·20 claims
- 1271US9109518B2Method and apparatus for monitoring performance of EGR heat exchangerBALESTRINO SANDRO R·Filed 2012·Granted Aug 18, 2015·4 cites·3 claims
- 1367US8484790B2Exhaust Gas Recirculation cooler cleaner having active material actuatorKNAFL ALEXANDER·Filed 2009·Granted Jul 16, 2013·1 cites·16 claims
- 1467US6981367B2Hydrogen and oxygen generation from a water vapor containing exhaustGEN MOTORS CORP·Filed 2003·Granted Jan 3, 2006·16 cites·31 claims
- 1563US7921828B2Modulating flow through an exhaust gas recirculation cooler to maintain gas flow velocities conducive to reducing deposit build-upsGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Apr 12, 2011·4 cites·18 claims
- 1661US12338762B2Exhaust gas treatment system for controlling hydrocarbon adsorption/desorption in hydrocarbon trapGM GLOBAL TECH OPERATIONS LLC·Filed 2023·Granted Jun 24, 2025·0 cites·14 claims
- 1760US7669584B2Method and apparatus for determining piston position in an engineGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Mar 2, 2010·3 cites·16 claims
- 1854US9145853B2Exhaust gas recirculation cooler and systemGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted Sep 29, 2015·0 cites·20 claims
- 1950US9097214B2Exhaust gas recirculation system having active material actuated by-passBROWNE ALAN L·Filed 2011·Granted Aug 4, 2015·0 cites·4 claims
- 2045US2014020361A1Exhaust gas recirculation cooler with a heated filterGM GLOBAL TECH OPERATIONS INC·Filed 2013·Application pending·0 cites
- 2139US2011271937A1Heat exchanger method and apparatus for engine exhaust gasesGM GLOBAL TECH OPERATIONS INC·Filed 2010·Application pending·0 cites
- 2238US2004265201A1NOx removal systemFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →