Inventor · disambiguated record
Paul R. Stevenson
Also filed as: STEVENSON PAUL R
25 granted patents·13 pending applications·333 citations·filing 2000–2021
95Inventor score
Top patents by PatentIndex Score
38 records- 0199US7951211B2Quaternary ammonium salt detergents for use in fuelsLUBRIZOL CORP·Filed 2006·Granted May 31, 2011·95 cites·5 claims
- 0299US7947093B2Quaternary ammonium salt detergents for use in fuelsLUBRIZOL CORP·Filed 2010·Granted May 24, 2011·57 cites·5 claims
- 0397US7906470B2Quaternary ammonium salt of a Mannich compoundLUBRIZOL CORP·Filed 2006·Granted Mar 15, 2011·38 cites·10 claims
- 0496US8083814B2Quaternary ammonium salt of a mannich compoundSTEVENSON PAUL R·Filed 2011·Granted Dec 27, 2011·39 cites·15 claims
- 0595US8961623B2Quaternary ammonium amide and/or ester saltsSTEVENSON PAUL R·Filed 2010·Granted Feb 24, 2015·26 cites·14 claims
- 0694US8153570B2Quaternary ammonium salt detergents for use in lubricating compositionsBARTON WILLIAM·Filed 2011·Granted Apr 10, 2012·26 cites·5 claims
- 0792US8476207B2Quaternary ammonium salt detergents for use in lubricating compositionsBARTON WILLIAM R S·Filed 2012·Granted Jul 2, 2013·8 cites·5 claims
- 0890US10023819B2Quaternary ammonium amide and/or ester saltsLUBRIZOL CORP·Filed 2015·Granted Jul 17, 2018·3 cites·11 claims
- 0988US9279093B2Lubricating composition containing an aromatic compoundLUBRIZOL CORP·Filed 2015·Granted Mar 8, 2016·2 cites·14 claims
- 1086US10913910B2Quaternary ammonium amide and/or ester saltsLUBRIZOL CORP·Filed 2019·Granted Feb 9, 2021·1 cites·7 claims
- 1184US10479950B2Quaternary ammonium amide and/or ester saltsLUBRIZOL CORP·Filed 2017·Granted Nov 19, 2019·1 cites·15 claims
- 1284US9150813B2Lubricating composition containing an aromatic compoundGIESELMAN MATTHEW D·Filed 2010·Granted Oct 6, 2015·3 cites·8 claims
- 1381US6554331B2Outside door handle for a motor vehicleDAIMLER CHRYSLER CORP·Filed 2000·Granted Apr 29, 2003·34 cites·9 claims
- 1478US11820957B2Low molecular weight amide/ester containing quaternary ammonium saltsLUBRIZOL CORP·Filed 2021·Granted Nov 21, 2023·0 cites·5 claims
- 1574US11781085B2Low molecular weight imide containing quaternary ammonium saltsLUBRIZOL CORP·Filed 2021·Granted Oct 10, 2023·0 cites·4 claims
- 1672US10669496B2Diesel detergent without a low molecular weight penaltyLUBRIZOL CORP·Filed 2018·Granted Jun 2, 2020·0 cites·8 claims
- 1772US2019345406A1Low molecular weight amide/ester containing quaternary ammonium saltsLUBRIZOL CORP·Filed 2019·Application pending·0 cites
- 1871US11174444B2Diesel detergent without a low molecular weight penaltyLUBRIZOL CORP·Filed 2020·Granted Nov 16, 2021·0 cites·7 claims
- 1969US10160850B2Quaternary ammonium salt of a polyalkene-substituted amine compoundLUBRIZOL CORP·Filed 2014·Granted Dec 25, 2018·0 cites·14 claims
- 2067US10202559B2Diesel detergent without a low molecular weight penaltyLUBRIZOL CORP·Filed 2013·Granted Feb 12, 2019·0 cites·9 claims
- 2167US10005978B2Diesel detergent without a low molecular weight penaltyLUBRIZOL CORP·Filed 2013·Granted Jun 26, 2018·0 cites·11 claims
- 2267US9777240B2Lubricating composition containing an aromatic compoundLUBRIZOL CORP·Filed 2016·Granted Oct 3, 2017·0 cites·11 claims
- 2359US11124720B2Fuel additivesLUBRIZOL CORP·Filed 2018·Granted Sep 21, 2021·0 cites·13 claims
- 2459US2017121628A1Low molecular weight amide/ester containing quaternary ammonium saltsLUBRIZOL CORP·Filed 2015·Application pending·0 cites
- 2555US2017114296A1Low molecular weight imide containing quaternary ammonium saltsLUBRIZOL CORP·Filed 2015·Application pending·0 cites
- 2655US2011219674A1Additives to Reduce Metal Pick-Up in FuelsLUBRIZOL CORP·Filed 2009·Application pending·0 cites
- 2753US2008113890A1Quaternary Ammonium Salt of a Polyalkene-Substituted Amine CompoundLUBRIZOL CORP·Filed 2006·Application pending·0 cites
- 2848US12104133B2Fuel additives and formulations for improving performance of gasoline direct injection enginesLUBRIZOL CORP·Filed 2021·Granted Oct 1, 2024·0 cites·10 claims
- 2948US11254646B2Ultra-low molecular weight imide containing quaternary ammonium salts having short hydrocarbon tailsLUBRIZOL CORP·Filed 2016·Granted Feb 22, 2022·0 cites·19 claims
- 3048US8821596B2Nitrogen-free deposit control fuel additives and one step process for the making thereofSTEVENSON PAUL R·Filed 2010·Granted Sep 2, 2014·0 cites·10 claims
- 3146US2018355267A1Ultra-low molecular weight amide/ester containing quaternary ammonium salts having short hydrocarbon tailsLUBRIZOL CORP·Filed 2016·Application pending·0 cites
- 3244US2012317874A1Nitrogen Free Deposit Control Fuel AdditivesSTEVENSON PAUL R·Filed 2011·Application pending·0 cites
- 3343US2017101594A1Coupled quaternary ammonium saltsLUBRIZOL CORP·Filed 2015·Application pending·0 cites
- 3443US2017096611A1Branched amine containing quaternary ammonium saltsLUBRIZOL CORP·Filed 2015·Application pending·0 cites
- 3542US2017096610A1High molecular weight amide/ester containing quaternary ammonium saltsLUBRIZOL CORP·Filed 2015·Application pending·0 cites
- 3642US2017107441A1Epoxide quaternized quaternary ammonium saltsLUBRIZOL CORP·Filed 2015·Application pending·0 cites
- 3740US2017107438A1High molecular weight imide containing quaternary ammonium saltsLUBRIZOL CORP·Filed 2015·Application pending·0 cites
- 3837US2004026936A1Motor vehicle door component having fiber flockingFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →