Patent · US Expired

Lubricating oil composition

US6500786B1 · kind B1 · utility

15Cited by

17References

19Claims

0Family size

Assignee

Infineum International Limited · GB

Inventors

Rolfe J. Hartley · Cranbury, US
Malcolm Waddoups · Westfield, US

Key dates

Filing date	Nov 26, 2001
Grant date	Dec 31, 2002
Priority date	—
Expiry date	Nov 26, 2021

Classification

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

Abstract

Lubricating oil compositions exhibititing improved low temperature valve train wear performance with a lowered phosphorus content, which contain a reduced amount of a metal hydrocarbyl dithiophosphate, a molybdenum compound, a metal-free friction modifier and a phosphorus-free antioxidant.

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