Patent · US Active

Lubricating oil composition

US7867955B2 · kind B2 · utility

2Cited by

10References

10Claims

0Family size

Assignee

Infineum International Limited · GB

Inventors

Michael Conroy · Cupertino, US
Michele Thornhill · Woodstock, GB

Key dates

Filing date	Feb 8, 2006
Grant date	Jan 11, 2011
Priority date	—
Expiry date	Dec 25, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2040/255
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method of reducing the occurrence of ring-sticking in an internal combustion engine in which the crankcase of such an engine is lubricated with a multigrade crankcase lubricating oil composition containing 1 to 15 mass %, based on the mass of the oil composition, of a non-hydrogenated olefin polymer having a number average molecular weight in the range of 100 to 5,000.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.