Inventor · disambiguated record
Z. Gerald Liu
Also filed as: LIU Z GERALD
47 granted patents·6 pending applications·2,572 citations·filing 2000–2024
98Inventor score
Files withCUMMINS EMISSION SOLUTIONS INC22FLEETGUARD INC11CUMMINS FILTRATION IP INC5NELSON IND INC4LIU Z GERALD3
Top patents by PatentIndex Score
53 records- 0199US6449947B1Low pressure injection and turbulent mixing in selective catalytic reduction systemFLEETGUARD INC·Filed 2001·Granted Sep 17, 2002·276 cites·20 claims
- 0298US7258719B2Filter and forming systemFLEETGUARD INC·Filed 2005·Granted Aug 21, 2007·102 cites·7 claims
- 0398US7052532B1High temperature nanofilter, system and method3M INNOVATIVE PROPERTIES CO·Filed 2002·Granted May 30, 2006·213 cites·25 claims
- 0498US6641637B2Additional flow filterNELSON IND INC·Filed 2002·Granted Nov 4, 2003·164 cites·7 claims
- 0598US6601385B2Impactor for selective catalytic reduction systemFLEETGUARD INC·Filed 2001·Granted Aug 5, 2003·132 cites·11 claims
- 0698US6511599B2Multi-element cylindrical filter with equalized flowNELSON IND INC·Filed 2000·Granted Jan 28, 2003·250 cites·20 claims
- 0798US6416561B1Open flow filter with safety elementNELSON IND INC·Filed 2000·Granted Jul 9, 2002·269 cites·41 claims
- 0897US6375700B1Direct flow filterNELSON IND INC·Filed 2000·Granted Apr 23, 2002·207 cites·25 claims
- 0996US10632430B1Systems and methods for mixing exhaust gases and reductant in an aftertreatment systemCUMMINS EMISSION SOLUTIONS INC·Filed 2019·Granted Apr 28, 2020·24 cites·20 claims
- 1096US6712869B2Exhaust aftertreatment device with flow diffuserFLEETGUARD INC·Filed 2002·Granted Mar 30, 2004·112 cites·5 claims
- 1196US6582490B2Pre-form for exhaust aftertreatment control filterFLEETGUARD INC·Filed 2001·Granted Jun 24, 2003·108 cites·27 claims
- 1295US8240137B2Reductant injection and decomposition systemLIU Z GERALD·Filed 2009·Granted Aug 14, 2012·56 cites·21 claims
- 1395US6722123B2Exhaust aftertreatment device, including chemical mixing and acoustic effectsFLEETGUARD INC·Filed 2002·Granted Apr 20, 2004·139 cites·16 claims
- 1494US7235124B2High temperature nanofilter, system and methodCUMMINS FILTRATION IP INC·Filed 2006·Granted Jun 26, 2007·22 cites·20 claims
- 1594US6576045B2Multi-stage diesel particulate collector system with combined processes of inertial impaction, virtual impaction, and filtrationFLEETGUARD INC·Filed 2001·Granted Jun 10, 2003·67 cites·27 claims
- 1693US11761365B2Exhaust gas and reductant mixer for an aftertreatment systemCUMMINS INC·Filed 2020·Granted Sep 19, 2023·10 cites·37 claims
- 1793US9644516B1Mounting plate for mounting injectors and directing reductant flow in exhaust conduitsCUMMINS EMISSION SOLUTIONS INC·Filed 2015·Granted May 9, 2017·24 cites·26 claims
- 1891US8756913B2Exhaust gas sensor moduleLIU Z GERALD·Filed 2011·Granted Jun 24, 2014·27 cites·11 claims
- 1991US7323105B1High capacity direct flow filter with maintained channel widthFLEETGUARD INC·Filed 2004·Granted Jan 29, 2008·65 cites·5 claims
- 2091US6946012B1Filter and forming systemFLEETGUARD INC·Filed 2003·Granted Sep 20, 2005·84 cites·7 claims
- 2190US11136910B2Systems and methods for mixing exhaust gases and reductant in an aftertreatment systemCUMMINS EMISSION SOLUTIONS INC·Filed 2018·Granted Oct 5, 2021·4 cites·20 claims
- 2290US8695330B2Reductant decomposition systemDAVIDSON DEBBIE·Filed 2010·Granted Apr 15, 2014·37 cites·21 claims
- 2390US6544310B2Exhaust aftertreatment filter with particulate distribution patternFLEETGUARD INC·Filed 2001·Granted Apr 8, 2003·95 cites·5 claims
- 2488US7211226B2Catalyst and filter combinationFLEETGUARD INC·Filed 2002·Granted May 1, 2007·43 cites·4 claims
- 2584US8071037B2Catalytic devices for converting urea to ammoniaHARINATH ARVIND V·Filed 2008·Granted Dec 6, 2011·14 cites·18 claims
- 2682US7806956B2Tuning particulate filter performance through selective plugging and use of multiple particulate filters to reduce emissions and improve thermal robustnessCUMMINS FILTRATION IP INC·Filed 2007·Granted Oct 5, 2010·11 cites·48 claims
- 2781US10792626B1Systems and methods for mixing exhaust gases and reductant in an aftertreatment systemCUMMINS EMISSION SOLUTIONS INC·Filed 2020·Granted Oct 6, 2020·1 cites·20 claims
- 2879US9849424B2Reductant decomposition systemCUMMINS FILTRATION IP INC·Filed 2014·Granted Dec 26, 2017·7 cites·16 claims
- 2977US11982219B2Systems and methods for mixing exhaust gases and reductant in an aftertreatment systemCUMMINS EMISSION SOLUTIONS INC·Filed 2022·Granted May 14, 2024·0 cites·29 claims
- 3077US11753975B2Method and apparatus to enhance fractional efficiency of diesel and gasoline particulate filtersCUMMINS EMISSION SOLUTIONS INC·Filed 2022·Granted Sep 12, 2023·0 cites·10 claims
- 3177US7966899B2Source dilution sampling system for emissions analysisCUMMINS FILTRATION IP INC·Filed 2009·Granted Jun 28, 2011·6 cites·6 claims
- 3276US2024418114A1Treated scr catalysts with enhanced sulfur resistanceCUMMINS EMISSION SOLUTIONS INC·Filed 2024·Application pending·0 cites
- 3372US11905867B2Systems and methods for controlling exhaust gas aftertreatment sensor systemsCUMMINS EMISSION SOLUTIONS INC·Filed 2022·Granted Feb 20, 2024·0 cites·9 claims
- 3471US11795848B2Systems and methods for controlling exhaust gas aftertreatment sensor systemsCUMMINS EMISSION SOLUTIONS INC·Filed 2022·Granted Oct 24, 2023·0 cites·19 claims
- 3571US11542847B2Systems and methods for mixing exhaust gases and reductant in an aftertreatment systemCUMMINS EMISSION SOLUTIONS INC·Filed 2021·Granted Jan 3, 2023·0 cites·20 claims
- 3667US11578634B2Optical sensing of NOx and ammonia in aftertreatment systemsCUMMINS EMISSION SOLUTIONS INC·Filed 2022·Granted Feb 14, 2023·0 cites·13 claims
- 3765US11519310B2Method and apparatus to enhance fractional efficiency of diesel and gasoline particulate filtersCUMMINS EMISSION SOLUTIONS INC·Filed 2019·Granted Dec 6, 2022·0 cites·24 claims
- 3865US11346264B2Systems and methods for controlling exhaust gas aftertreatment sensor systemsCUMMINS EMISSION SOLUTIONS INC·Filed 2020·Granted May 31, 2022·0 cites·7 claims
- 3965US8245498B2Apparatus and method to control engine crankcase emissionsLIU Z GERALD·Filed 2008·Granted Aug 21, 2012·3 cites·18 claims
- 4064US12104517B2Treated SCR catalysts with enhanced sulfur resistanceCUMMINS EMISSION SOLUTIONS INC·Filed 2020·Granted Oct 1, 2024·0 cites·5 claims
- 4163US10060845B2Systems and methods for reducing secondary emissions from catalyst componentsCUMMINS INC·Filed 2017·Granted Aug 28, 2018·0 cites·20 claims
- 4262US2021348536A1OPTICAL SENSING OF NOx AND AMMONIA IN AFTERTREATMENT SYSTEMSCUMMINS EMISSION SOLUTIONS INC·Filed 2019·Application pending·0 cites
- 4357US12281605B2Exhaust gas aftertreatment systemCUMMINS EMISSION SOLUTIONS INC·Filed 2022·Granted Apr 22, 2025·0 cites·16 claims
- 4457US12264612B2Mixers for use in aftertreatment systemsCUMMINS EMISSION SOLUTIONS INC·Filed 2021·Granted Apr 1, 2025·0 cites·20 claims
- 4556US11946404B2Diesel fuel dosing module for regeneration of diesel particulate filters with continuous purgingCUMMINS FILTRATION IP INC·Filed 2019·Granted Apr 2, 2024·0 cites·18 claims
- 4655US9623377B2Systems and methods for reducing secondary emissions from catalyst componentsYEZERETS ALEKSEY·Filed 2012·Granted Apr 18, 2017·0 cites·12 claims
- 4752US2025237160A1Mixer for exhaust aftertreatment systemCUMMINS EMISSION SOLUTIONS INC·Filed 2024·Application pending·0 cites
- 4851US11193853B2Remanufacturable sensing assemblies and methods of remanufactureCUMMINS EMISSION SOLUTIONS INC·Filed 2020·Granted Dec 7, 2021·0 cites·20 claims
- 4949US11585253B2Converging liquid reductant injector nozzle in selective catalytic reduction systemsCUMMINS EMISSION SOLUTIONS INC·Filed 2016·Granted Feb 21, 2023·0 cites·8 claims
- 5046US2020300314A1Particulate collection systems and methodsCUMMINS EMISSION SOLUTIONS INC·Filed 2020·Application pending·0 cites
Showing the top 50 of 53 patent records by PatentIndex Score.
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