Patent · US Expired

Lubricating oil compositions

US6649576B2 · kind B2 · utility

6Cited by
8References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 5, 2002
Grant dateNov 18, 2003
Priority date—
Expiry dateJun 5, 2022

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC10N2070/02
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

A crankcase lubricant containing a Group III basestock in a major amount and a Group V basestock in the form of an ester in a minor amount. The lubricant also comprises a dispersant, a metal detergent, one or more other additives, and a viscosity modifier.

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