Inventor · disambiguated record
Roy James Primus
Also filed as: PRIMUS ROY · PRIMUS ROY J · PRIMUS ROY JAMES
58 granted patents·8 pending applications·546 citations·filing 1978–2023
98Inventor score
Files withGEN ELECTRIC34TRANSP IP HOLDINGS LLC13DAUM WOLFGANG4CUMMINS ENGINE CO INC2KLINGBEIL ADAM EDGAR2
Top patents by PatentIndex Score
66 records- 0197US10337347B2Method and systems for an energy recovery and energy converting unit for an engineGEN ELECTRIC·Filed 2016·Granted Jul 2, 2019·7 cites·3 claims
- 0297US7137253B2Method and apparatus for actively turbocharging an engineGEN ELECTRIC·Filed 2004·Granted Nov 21, 2006·71 cites·29 claims
- 0397US4324213ALubrication fluid filtering and cooling assemblyCUMMINS ENGINE CO INC·Filed 1980·Granted Apr 13, 1982·120 cites·17 claims
- 0495US11549429B2Engine mixing structuresTRANSP IP HOLDINGS LLC·Filed 2020·Granted Jan 10, 2023·5 cites·25 claims
- 0594US10119460B2Integrated turboshaft engineGEN ELECTRIC·Filed 2014·Granted Nov 6, 2018·18 cites·5 claims
- 0694US9903284B1Dual-fuel engine system and method having the sameGEN ELECTRIC·Filed 2016·Granted Feb 27, 2018·9 cites·20 claims
- 0794US7487631B2System and method for supplying reductants to an emission treatment systemGEN ELECTRIC·Filed 2005·Granted Feb 10, 2009·27 cites·34 claims
- 0893US11008932B2Engine mixing structuresGEN ELECTRIC·Filed 2018·Granted May 18, 2021·6 cites·22 claims
- 0992US7296555B2System and method for operating a turbo-charged engineGEN ELECTRIC·Filed 2005·Granted Nov 20, 2007·25 cites·35 claims
- 1089US8903632B2Methods and systems for exhaust gas recirculation cooler regenerationPETERS ERIC DAVID·Filed 2012·Granted Dec 2, 2014·9 cites·18 claims
- 1189US4244330AEngine cylinder liner having a mid stopCUMMINS ENGINE CO INC·Filed 1978·Granted Jan 13, 1981·50 cites·10 claims
- 1287US12337817B2Hybrid propulsion system and method of controlling sameTRANSP IP HOLDINGS LLC·Filed 2021·Granted Jun 24, 2025·1 cites·20 claims
- 1387US9863342B2System and method for controlling an engine air-fuel ratioGEN ELECTRIC·Filed 2015·Granted Jan 9, 2018·4 cites·20 claims
- 1487US8857156B2Engine utilizing a plurality of control valves, and a related method thereofPRIMUS ROY JAMES·Filed 2012·Granted Oct 14, 2014·12 cites·28 claims
- 1586US8794212B2Engine and method of operating engineKLINGBEIL ADAM EDGAR·Filed 2011·Granted Aug 5, 2014·7 cites·29 claims
- 1686US8103429B2System and method for operating a compression-ignition engineSIVASUBRAMANIAM MANTHRAM·Filed 2006·Granted Jan 24, 2012·19 cites·15 claims
- 1785US10900373B2Method and systems for an energy recovery and energy converting unit for an engineTRANSP IP HOLDINGS LLC·Filed 2019·Granted Jan 26, 2021·2 cites·13 claims
- 1885US7925431B2System and method for removing particulate matter from a diesel particulate filterGEN ELECTRIC·Filed 2007·Granted Apr 12, 2011·11 cites·31 claims
- 1984US7431012B1Diesel combustion system with re-entrant piston bowlGEN ELECTRIC·Filed 2007·Granted Oct 7, 2008·19 cites·18 claims
- 2083US8375714B2System and method for operating a turbocharged engineGEN ELECTRIC·Filed 2005·Granted Feb 19, 2013·14 cites·39 claims
- 2183US7992389B2Method and apparatus for actively turbocharging an engineGEN ELECTRIC·Filed 2006·Granted Aug 9, 2011·13 cites·11 claims
- 2282US11192458B2Hybrid propulsion system and method of controlling sameGEN ELECTRIC·Filed 2018·Granted Dec 7, 2021·3 cites·22 claims
- 2382US8903631B2Methods and systems for exhaust gas recirculation cooler regenerationKLINGBEIL ADAM·Filed 2011·Granted Dec 2, 2014·6 cites·21 claims
- 2481US9964056B2System and method for controlling exhaust emissions and specific fuel consumption of an engineGEN ELECTRIC·Filed 2015·Granted May 8, 2018·2 cites·9 claims
- 2580US9140179B2System and method for controlling exhaust emissions and specific fuel consumption of an engineGEN ELECTRIC·Filed 2012·Granted Sep 22, 2015·5 cites·27 claims
- 2680US7360522B2System and method for operating a turbo-charged engineGEN ELECTRIC·Filed 2006·Granted Apr 22, 2008·15 cites·25 claims
- 2778US10183683B2Vehicle control systemGEN ELECTRIC·Filed 2017·Granted Jan 22, 2019·2 cites·20 claims
- 2876US9266542B2System and method for optimized fuel efficiency and emission output of a diesel powered systemDAUM WOLFGANG·Filed 2007·Granted Feb 23, 2016·10 cites·22 claims
- 2975US11781443B2Method and systems for an energy recovery and energy converting unit for an engineTRANSP IP HOLDINGS LLC·Filed 2022·Granted Oct 10, 2023·0 cites·14 claims
- 3075US10947917B2Methods and system for skip-firing of an engineTRANSP IP HOLDINGS LLC·Filed 2018·Granted Mar 16, 2021·1 cites·17 claims
- 3175US8527183B2System and method for controlling the fuel injection event in an internal combustion engineGALLAGHER SHAWN M·Filed 2009·Granted Sep 3, 2013·12 cites·13 claims
- 3275US7721532B2Method and system for regeneration of a catalystGEN ELECTRIC·Filed 2005·Granted May 25, 2010·6 cites·33 claims
- 3373US7630823B2System and method for controlling the fuel injection event in an internal combustion engineGEN ELECTRIC·Filed 2007·Granted Dec 8, 2009·8 cites·19 claims
- 3472US11346238B2Method and systems for an energy recovery and energy converting unit for an engineTRANSP IP HOLDINGS LLC·Filed 2020·Granted May 31, 2022·0 cites·6 claims
- 3572US11199155B2Piston crown for a combustion system and an associated method thereofTRANSP IP HOLDINGS LLC·Filed 2020·Granted Dec 14, 2021·0 cites·20 claims
- 3671US10837401B2Piston crown for a combustion system and an associated method thereofGEN ELECTRIC·Filed 2019·Granted Nov 17, 2020·1 cites·23 claims
- 3770US12152530B2Turbine-compressor assembly and methodTRANSP IP HOLDINGS LLC·Filed 2023·Granted Nov 26, 2024·0 cites·20 claims
- 3870US10774771B2Engine control system for reducing particulate matterGEN ELECTRIC·Filed 2016·Granted Sep 15, 2020·1 cites·19 claims
- 3969US9695723B2Combustion system including a piston crown and fuel injectorGEN ELECTRIC·Filed 2014·Granted Jul 4, 2017·2 cites·5 claims
- 4068US10570835B2Substitution rate control system for an engine and an associated method thereofTRANSP IP HOLDINGS LLC·Filed 2014·Granted Feb 25, 2020·2 cites·26 claims
- 4166US11536221B2Piston crown for a combustion system and an associated method thereofTRANSP IP HOLDINGS LLC·Filed 2021·Granted Dec 27, 2022·0 cites·20 claims
- 4266US8494696B2System, method, and computer software code for improved fuel efficiency emission output, and mission performance of a powered systemDAUM WOLFGANG·Filed 2012·Granted Jul 23, 2013·3 cites·23 claims
- 4364US10190509B2System and method for controlling a dual fuel engineGEN ELECTRIC·Filed 2013·Granted Jan 29, 2019·1 cites·29 claims
- 4462US11643963B2Methods and systems for electric turbocharger controlTRANSP IP HOLDINGS LLC·Filed 2021·Granted May 9, 2023·0 cites·15 claims
- 4561US11077871B2Vehicle control systemGE GLOBAL SOURCING LLC·Filed 2018·Granted Aug 3, 2021·0 cites·20 claims
- 4661US7885754B2Fuel injection system and method of operating the same for an engineGEN ELECTRIC·Filed 2007·Granted Feb 8, 2011·4 cites·25 claims
- 4760US8240138B2System and method for reducing particulate matter emission in diesel exhaust gasLU SHUGUANG·Filed 2007·Granted Aug 14, 2012·8 cites·1 claims
- 4858US10294846B2Systems for vehicle particulate filter regenerationGEN ELECTRIC·Filed 2017·Granted May 21, 2019·0 cites·24 claims
- 4958US7879295B2Conversion system for reducing NOx emissionsGEN ELECTRIC·Filed 2005·Granted Feb 1, 2011·1 cites·22 claims
- 5057US11338829B2Oil carryover reduction systemTRANSP IP HOLDINGS LLC·Filed 2020·Granted May 24, 2022·0 cites·20 claims
Showing the top 50 of 66 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →