Patent · US Expired

Lubricating oil composition

US4228020A · kind A · utility

12Cited by
2References
4Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMay 4, 1979
Grant dateOct 14, 1980
Priority date—
Expiry dateMay 4, 1999

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC10N2040/25
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

Friction of internal combustion engines is reduced by using a crankcase motor oil containing the combination of graphite and a di-lower alkyl hydrocarbyl phosphonate, e.g. dimethyloctadecylphosphonate.

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