Inventor · disambiguated record
Cynthia Chaffin Webb
Also filed as: WEBB CYNTHIA C · WEBB CYNTHIA CHAFFIN
53 granted patents·5 pending applications·733 citations·filing 1995–2024
98Inventor score
Top patents by PatentIndex Score
58 records- 0198US6615580B1Integrated system for controlling diesel engine emissionsSOUTHWEST RES INST·Filed 2001·Granted Sep 9, 2003·99 cites·9 claims
- 0297US11499463B2Methods for evaluating diesel exhaust fluid qualityPACCAR INC·Filed 2020·Granted Nov 15, 2022·8 cites·20 claims
- 0397US11473470B2Methods for operation of an emissions aftertreatment system for NOx control during regeneration of diesel particulate filterPACCAR INC·Filed 2021·Granted Oct 18, 2022·8 cites·19 claims
- 0497US7195006B2Exhaust gas recirculation system with control of EGR gas temperatureSOUTHWEST RES INST·Filed 2005·Granted Mar 27, 2007·43 cites·21 claims
- 0596US11181026B1Methods for operation of an emissions aftertreatment system for NOx control during regeneration of diesel particulate filterPACCAR INC·Filed 2020·Granted Nov 23, 2021·22 cites·18 claims
- 0696US6718757B2Integrated method for controlling diesel engine emissions in CRT-LNT systemSOUTHWEST RES INST·Filed 2003·Granted Apr 13, 2004·77 cites·16 claims
- 0794US11536183B1Exhaust aftertreatment subsystemPACCAR INC·Filed 2021·Granted Dec 27, 2022·3 cites·17 claims
- 0894US6742328B2Systems and methods for controlling diesel engine emissionsSOUTHWEST RES INST·Filed 2002·Granted Jun 1, 2004·69 cites·27 claims
- 0994US5771683AActive porous medium aftertreatment control systemSOUTHWEST RES INST·Filed 1995·Granted Jun 30, 1998·101 cites·14 claims
- 1093US11326493B2Ammonia storage capacity of SCR catalyst unitPACCAR INC·Filed 2020·Granted May 10, 2022·7 cites·19 claims
- 1191US7032376B1Diesel fuel burner for diesel emissions control systemSOUTHWEST RES INST·Filed 2003·Granted Apr 25, 2006·67 cites·27 claims
- 1287US11608766B2Ammonia storage capacity of SCR catalyst unitPACCAR INC·Filed 2022·Granted Mar 21, 2023·1 cites·19 claims
- 1387US11313301B2Control of exhaust energy in internal combustion enginesPACCAR INC·Filed 2020·Granted Apr 26, 2022·3 cites·17 claims
- 1486US11946400B2System and method for monitoring an oxidation catalystPACCAR INC·Filed 2021·Granted Apr 2, 2024·1 cites·14 claims
- 1586US8720185B2Use of Braking energy to augment exhaust heat for improved operation of exhaust aftertreatment devicesWEBB CYNTHIA C·Filed 2012·Granted May 13, 2014·8 cites·9 claims
- 1685US12320287B2Heater control in heavy-duty motor vehicle enginesPACCAR INC·Filed 2024·Granted Jun 3, 2025·0 cites·19 claims
- 1784US7748976B2Use of recirculated exhaust gas in a burner-based exhaust generation system for reduced fuel consumption and for coolingSOUTHWEST RES INST·Filed 2006·Granted Jul 6, 2010·18 cites·8 claims
- 1883US11879367B2NOx sensor diagnostics in heavy-duty motor vehicle enginesPACCAR INC·Filed 2020·Granted Jan 23, 2024·1 cites·15 claims
- 1983US11725560B2Heater control in heavy-duty motor vehicle enginesPACCAR INC·Filed 2020·Granted Aug 15, 2023·1 cites·18 claims
- 2082US12116919B2Control of selective catalytic reduction in heavy-duty motor vehicle enginesPACCAR INC·Filed 2023·Granted Oct 15, 2024·0 cites·18 claims
- 2182US7347086B2System and method for burner-based accelerated aging of emissions control device, with engine cycle having cold start and warm up modesSOUTHWEST RES INST·Filed 2006·Granted Mar 25, 2008·13 cites·15 claims
- 2282US7277801B2Method for testing catalytic converter durabilitySOUTHWEST RES INST·Filed 2006·Granted Oct 2, 2007·13 cites·24 claims
- 2382US7140874B2Method and apparatus for testing catalytic converter durabilitySOUTHWEST RES INST·Filed 2002·Granted Nov 28, 2006·29 cites·49 claims
- 2481US12196120B2Exhaust after-treatment in heavy-duty motor vehiclesPACCAR INC·Filed 2023·Granted Jan 14, 2025·0 cites·17 claims
- 2581US12085001B2Heater control in heavy-duty motor vehicle enginesPACCAR INC·Filed 2023·Granted Sep 10, 2024·0 cites·18 claims
- 2681US8679852B2Particulate matter generator for use with an emissions control device aging systemWEBB CYNTHIA C·Filed 2011·Granted Mar 25, 2014·4 cites·10 claims
- 2778US12173631B2System and method for monitoring an oxidation catalystPACCAR INC·Filed 2024·Granted Dec 24, 2024·0 cites·11 claims
- 2878US11661878B2Control of selective catalytic reduction in heavy-duty motor vehicle enginesPACCAR INC·Filed 2022·Granted May 30, 2023·0 cites·20 claims
- 2977US12359598B2NOx sensor diagnostics in heavy-duty motor vehicle enginesPACCAR INC·Filed 2023·Granted Jul 15, 2025·0 cites·19 claims
- 3076US7550126B2NOx augmentation in exhaust gas simulation systemSOUTHWEST RES INST·Filed 2007·Granted Jun 23, 2009·7 cites·17 claims
- 3174US11927126B2Methods for evaluating diesel exhaust fluid qualityPACCAR INC·Filed 2022·Granted Mar 12, 2024·0 cites·15 claims
- 3274US11761396B2Control of exhaust energy in internal combustion enginesPACCAR INC·Filed 2022·Granted Sep 19, 2023·0 cites·16 claims
- 3374US7741127B2Method for producing diesel exhaust with particulate material for testing diesel engine aftertreatment devicesSOUTHWEST RES INST·Filed 2007·Granted Jun 22, 2010·8 cites·15 claims
- 3474US7625201B2Method and apparatus for testing catalytic converter durabilitySOUTHWEST RES INST·Filed 2006·Granted Dec 1, 2009·8 cites·14 claims
- 3573US11879375B2Exhaust after-treatment in heavy-duty motor vehiclesPACCAR INC·Filed 2022·Granted Jan 23, 2024·0 cites·9 claims
- 3672US11352927B2Control of selective catalytic reduction in heavy-duty motor vehicle enginesPACCAR INC·Filed 2020·Granted Jun 7, 2022·0 cites·20 claims
- 3772US6983645B2Method for accelerated aging of catalytic converters incorporating engine cold start simulationSOUTHWEST RES INST·Filed 2003·Granted Jan 10, 2006·17 cites·139 claims
- 3870US7578179B2Exhaust gas simulation system with dual path temperature control for control of exhaust temperatureSOUTHWEST RES INST·Filed 2007·Granted Aug 25, 2009·6 cites·8 claims
- 3969US11655744B2Predictive ammonia release controlPACCAR INC·Filed 2022·Granted May 23, 2023·0 cites·20 claims
- 4068US11434800B2Predictive ammonia release controlPACCAR INC·Filed 2021·Granted Sep 6, 2022·0 cites·20 claims
- 4168US6016711AMobile vehicle emissions sampling systemSOUTHWEST RES INST·Filed 1997·Granted Jan 25, 2000·40 cites·22 claims
- 4265US8425224B2Mass air flow compensation for burner-based exhaust gas generation systemWEBB CYNTHIA C·Filed 2006·Granted Apr 23, 2013·6 cites·8 claims
- 4364US11319849B2Technologies for producing exhaust gas with controlled hydrocarbon speciationSOUTHWEST RES INST·Filed 2020·Granted May 3, 2022·0 cites·18 claims
- 4462US7299137B2Method for drive cycle simulation using non-engine based test systemSOUTHWEST RES INST·Filed 2004·Granted Nov 20, 2007·12 cites·16 claims
- 4560US10753246B2Technologies for producing exhaust gas with controlled hydrocarbon speciationSOUTHWEST RES INST·Filed 2017·Granted Aug 25, 2020·0 cites·9 claims
- 4660US7212926B2Testing using a non-engine based test system and exhaust product comprising alternative fuel exhaustSOUTHWEST RES INST·Filed 2004·Granted May 1, 2007·11 cites·20 claims
- 4756US7412335B2Component evaluations using non-engine based test systemSOUTHWEST RES INST·Filed 2004·Granted Aug 12, 2008·12 cites·23 claims
- 4854US7175422B2Method for accelerated aging of catalytic converters incorporating injection of volatilized lubricantSOUTHWEST RES INST·Filed 2003·Granted Feb 13, 2007·10 cites·27 claims
- 4952US11828677B2Cloud computing-based vehicle fleet benchmarkingPACCAR INC·Filed 2021·Granted Nov 28, 2023·0 cites·19 claims
- 5051US11808194B2Modular exhaust aftertreatment subsystemPACCAR INC·Filed 2022·Granted Nov 7, 2023·0 cites·17 claims
Showing the top 50 of 58 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →