Patent · US Active

Engine oils with low temperature pumpability

US11680222B2 · kind B2 · utility

0Cited by

4References

15Claims

0Family size

Assignee

Afton Chemical Corporation · US

Inventors

Kongsheng Yang · Glen Allen, US
Youhong WANG · Meekrap-oord, CN
Sheng Jiang · Hsinchu, TW

Key dates

Filing date	Oct 22, 2021
Grant date	Jun 20, 2023
Priority date	—
Expiry date	Oct 22, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2060/01
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A lubricating composition including a polymer blend of a modified styrene-maleic anhydride copolymer and poly(meth)acrylate copolymer effective to maintain a pumpable fluid at low temperatures.

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