Inventor
ROBY STEPHEN H
US14 patents
⚠️ This page may combine multiple inventors who share the name “ROBY STEPHEN H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LUBRIZOL CORP
6 patentsUS5705458AJan 6, 1998
Additive compositions for lubricants and functional fluids
LUBRIZOL CORP277 citations98
US5693598ADec 2, 1997
Low-viscosity lubricating oil and functional fluid compositions
LUBRIZOL CORP133 citations97
US5726132AMar 10, 1998
Oil composition for improving fuel economy in internal combustion engines
LUBRIZOL CORP33 citations92
US5712230AJan 27, 1998
Additive compositions having reduced sulfur contents for lubricants and functional fluids
LUBRIZOL CORP25 citations92
US5674820AOct 7, 1997
Additive compositions for lubricants and functional fluids
LUBRIZOL CORP36 citations92
US6001783ADec 14, 1999
Mixed polysulfides and lubricants and functional fluids containing the same
LUBRIZOL CORP7 citations73
CHEVRON ORONITE CO
3 patentsUS7465696B2Dec 16, 2008
Lubricating base oil compositions and methods for improving fuel economy in an internal combustion engine using same
CHEVRON ORONITE CO9 citations82
US7926453B2Apr 19, 2011
Engine oil compositions
CHEVRON ORONITE CO5 citations71
US7454947B2Nov 25, 2008
Method of determining diesel engine valve train wear using a carbon black particle mixture
CHEVRON ORONITE CO3 citations62