Inventor · disambiguated record
Stephen H. Roby
Also filed as: ROBY STEPHEN · ROBY STEPHEN H · ROBY STEPHEN HAROLD
16 granted patents·8 pending applications·566 citations·filing 1996–2015
94Inventor score
Top patents by PatentIndex Score
24 records- 0198US5705458AAdditive compositions for lubricants and functional fluidsLUBRIZOL CORP·Filed 1996·Granted Jan 6, 1998·277 cites·41 claims
- 0295US5693598ALow-viscosity lubricating oil and functional fluid compositionsLUBRIZOL CORP·Filed 1996·Granted Dec 2, 1997·133 cites·29 claims
- 0391US8992769B2Process, method, and system for removing heavy metals from fluidsCHEVRON USA INC·Filed 2013·Granted Mar 31, 2015·16 cites·28 claims
- 0490US7926453B2Engine oil compositionsCHEVRON ORONITE CO·Filed 2010·Granted Apr 19, 2011·5 cites·21 claims
- 0588US7465696B2Lubricating base oil compositions and methods for improving fuel economy in an internal combustion engine using sameCHEVRON ORONITE CO·Filed 2005·Granted Dec 16, 2008·9 cites·48 claims
- 0682US7678747B2Engine oil compositionsCherron Oronite Company LLC·Filed 2009·Granted Mar 16, 2010·4 cites·22 claims
- 0782US5674820AAdditive compositions for lubricants and functional fluidsLUBRIZOL CORP·Filed 1996·Granted Oct 7, 1997·36 cites·48 claims
- 0880US9006501B2Low pour point renewable fuel blendBRAFMAN REBECCA·Filed 2011·Granted Apr 14, 2015·9 cites·7 claims
- 0980US7931703B2Methods for improving low-temperature properties of biodiesel fuelCHEVRON USA INC·Filed 2008·Granted Apr 26, 2011·4 cites·22 claims
- 1079US5726132AOil composition for improving fuel economy in internal combustion enginesLUBRIZOL CORP·Filed 1997·Granted Mar 10, 1998·33 cites·52 claims
- 1177US8057558B2Enhanced biodiesel fuel having improved low-temperature properties and methods of making sameZHOU GUANGCI·Filed 2008·Granted Nov 15, 2011·4 cites·11 claims
- 1272US7454947B2Method of determining diesel engine valve train wear using a carbon black particle mixtureCHEVRON ORONITE CO·Filed 2005·Granted Nov 25, 2008·3 cites·11 claims
- 1371US5712230AAdditive compositions having reduced sulfur contents for lubricants and functional fluidsLUBRIZOL CORP·Filed 1997·Granted Jan 27, 1998·25 cites·47 claims
- 1464US8142524B2Biodiesel-derived combustion improverROBY STEPHEN H·Filed 2008·Granted Mar 27, 2012·1 cites·22 claims
- 1553US8147567B2Enhanced biodiesel fuel having improved low-temperature properties and methods of making sameZHOU GUANGCI·Filed 2011·Granted Apr 3, 2012·0 cites·5 claims
- 1646US2004242433A1Low-phosphorus lubricating oil composition for extended drain intervalsCHEVRON ORONITE CO·Filed 2004·Application pending·0 cites
- 1745US2005070450A1Engine oil compositionsFiled 2003·Application pending·0 cites
- 1843US2004087451A1Low-phosphorus lubricating oil composition for extended drain intervalsFiled 2002·Application pending·0 cites
- 1942US6001783AMixed polysulfides and lubricants and functional fluids containing the sameLUBRIZOL CORP·Filed 1997·Granted Dec 14, 1999·7 cites·29 claims
- 2041US2015203420A1Removal of metals from liquid pyrolysis oilZHOU GUANGCI·Filed 2014·Application pending·0 cites
- 2141US2005070449A1Engine oil compositionsFiled 2003·Application pending·0 cites
- 2239US2014058147A1Process For Production Of Distillate FuelZHOU GUANGCI·Filed 2012·Application pending·0 cites
- 2339US2014058148A1Process For Production Of Distillate FuelZHOU GUANGCI·Filed 2012·Application pending·0 cites
- 2433US2015337087A1Removal of metals from liquid pyrolysis oilZHOU GUANGCI·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →