Inventor · disambiguated record
Rolfe J. Hartley
Also filed as: HARTLEY ROLFE · HARTLEY ROLFE J
33 granted patents·7 pending applications·1,977 citations·filing 1988–2019
98Inventor score
Files withETHYL PETROLEUM ADDITIVES INC8INFINEUM INT LTD8ETHYL CORP6EXXON CHEMICAL PATENTS INC4CHU CHIN2
Top patents by PatentIndex Score
40 records- 0199US6723685B2Lubricating oil compositionINFINEUM INT LTD·Filed 2002·Granted Apr 20, 2004·219 cites·20 claims
- 0299US4857214AOil-soluble phosphorus antiwear additives for lubricantsETHYL PETROLEUM ADDITIVES INC·Filed 1988·Granted Aug 15, 1989·268 cites·35 claims
- 0398US5652201ALubricating oil compositions and concentrates and the use thereofETHYL PETROLEUM ADDITIVES INC·Filed 1995·Granted Jul 29, 1997·239 cites·22 claims
- 0497US7485603B2Soot dispersants and lubricating oil compositions containing sameINFINEUM INT LTD·Filed 2005·Granted Feb 3, 2009·99 cites·48 claims
- 0596US6300291B1Lubricating oil compositionINFINEUM USA LP·Filed 1999·Granted Oct 9, 2001·228 cites·18 claims
- 0695US5358650AGear oil compositionsETHYL CORP·Filed 1993·Granted Oct 25, 1994·63 cites·5 claims
- 0794US5571445AGear oil compositionsETHYL CORP·Filed 1994·Granted Nov 5, 1996·54 cites·20 claims
- 0893US6500786B1Lubricating oil compositionINFINEUM INT LTD·Filed 2001·Granted Dec 31, 2002·47 cites·19 claims
- 0993US5344579AFriction modifier compositions and their useETHYL PETROLEUM ADDITIVES INC·Filed 1993·Granted Sep 6, 1994·65 cites·27 claims
- 1093US5089156AAshless or low-ash synthetic base compositions and additives thereforETHYL PETROLEUM ADDITIVES INC·Filed 1990·Granted Feb 18, 1992·73 cites·20 claims
- 1192US6096691AGear oil additive concentrates and lubricants containing themETHYL CORP·Filed 1993·Granted Aug 1, 2000·60 cites·23 claims
- 1291US6074993ALubricating oil composition containing two molybdenum additivesINFINEUMA USA L P·Filed 1999·Granted Jun 13, 2000·105 cites·15 claims
- 1391US5372735AAutomatic transmission fluids and additives thereforETHYL PETROLEUM ADDITIVES INC·Filed 1994·Granted Dec 13, 1994·52 cites·20 claims
- 1490US5441656AAutomatic transmission fluids and additives thereforETHYL PETROLEUM ADDITIVES INC·Filed 1994·Granted Aug 15, 1995·49 cites·27 claims
- 1589US6333298B1Molybdenum-free low volatility lubricating oil compositionINFINEUM INT LTD·Filed 1999·Granted Dec 25, 2001·59 cites·9 claims
- 1687US6852679B2Lubricating oil compositionINFINEUM INT LTD·Filed 2002·Granted Feb 8, 2005·27 cites·11 claims
- 1787US6642188B1Lubricating oil composition for outboard enginesINFINEUM INT LTD·Filed 2002·Granted Nov 4, 2003·28 cites·14 claims
- 1884US8530397B2Additive compositionsBERA TUSHAR KANTI·Filed 2007·Granted Sep 10, 2013·10 cites·20 claims
- 1984US7022653B2Friction modifiers for engine oil compositionINFINEUM INT LTD·Filed 2003·Granted Apr 4, 2006·23 cites·10 claims
- 2080US5360562AAshless or low-ash synthetic base compositions and additives thereforETHYL PETROLEUM ADDITIVES INC·Filed 1993·Granted Nov 1, 1994·29 cites·16 claims
- 2179US5962378ASynergistic combinations for use in functional fluid compositionsEXXON CHEMICAL PATENTS INC·Filed 1998·Granted Oct 5, 1999·34 cites·6 claims
- 2278US5880075ASynthetic biodegradable lubricants and functional fluidsEXXON CHEMICAL PATENTS INC·Filed 1997·Granted Mar 9, 1999·28 cites·9 claims
- 2375US8188021B2Lubricating oil compositionsCHU CHIN·Filed 2009·Granted May 29, 2012·3 cites·18 claims
- 2474US10487287B2Optimized composition for engine deposits and sealsCHEMIZOL ADDITIVES PRIVATE LTD·Filed 2016·Granted Nov 26, 2019·1 cites·25 claims
- 2567US5500140AOil-soluble phosphorus- and nitrogen-containing additivesETHYL CORP·Filed 1995·Granted Mar 19, 1996·23 cites·35 claims
- 2667US5387346AAutomatic transmission fluids and additives thereforETHYL PETROLEUM ADDITIVES INC·Filed 1993·Granted Feb 7, 1995·20 cites·20 claims
- 2766US6525004B1Combustion improving additive for small engine lubricating oilsINFINEUM INTERNAT INC·Filed 2001·Granted Feb 25, 2003·9 cites·14 claims
- 2865US6358896B1Friction modifiers for engine oil compositionINFINEUM INT LTD·Filed 2000·Granted Mar 19, 2002·7 cites·10 claims
- 2964US5573696AOil-soluble phosphorus- and nitrogen-containing additivesETHYL CORP·Filed 1996·Granted Nov 12, 1996·21 cites·22 claims
- 3059US6054420ASynthetic biodegradable lubricants and functional fluidsEXXON CHEMICAL PATENTS INC·Filed 1999·Granted Apr 25, 2000·14 cites·14 claims
- 3157US5612295ALubricant additive compositionsETHYL CORP·Filed 1996·Granted Mar 18, 1997·15 cites·22 claims
- 3256US10865358B2Soot dispersantJINZHOU DPF TH CHEMICALS CO LTD·Filed 2019·Granted Dec 15, 2020·0 cites·19 claims
- 3354US2010256030A1Lubricating Oil CompositionHARTLEY ROLFE J·Filed 2009·Application pending·0 cites
- 3449US2007105731A1Lubricating oil compositionsCHU CHIN·Filed 2005·Application pending·0 cites
- 3546US2006030498A1Lubricating oil additive concentratesHARTLEY ROLFE J·Filed 2004·Application pending·0 cites
- 3643US2002137636A1Lubricating oil compositionFiled 2001·Application pending·0 cites
- 3743US2004121918A1Lubricating oil composition for marine enginesFiled 2003·Application pending·0 cites
- 3836US2004147415A1Lubricant compositionFiled 2003·Application pending·0 cites
- 3935US6498129B1Two-cycle lubricating oil containing polyisobutylene amineEXXON CHEMICAL PATENTS INC·Filed 1998·Granted Dec 24, 2002·5 cites·12 claims
- 4031US2004087452A1Lubricating oil compositionFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →