Patent · US Active

Lubricating oil compositions

US8188021B2 · kind B2 · utility

2Cited by

3References

18Claims

0Family size

Assignee

Infineum International Limited · GB

Inventors

Chin-Chiun Chu · New Brunswick, US
Rolfe J. Hartley · Cranbury, US
Stuart Briggs · Edison, US
Jacob Emert · Brooklyn, US
Jai G. Bansal · Hackettstown, US

Key dates

Filing date	Feb 5, 2009
Grant date	May 29, 2012
Priority date	—
Expiry date	Feb 5, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2040/253
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A lubricating oil composition formulated with a viscosity index (VI) improver composition including a combination of an ethylene α-olefin copolymer having no greater than 66 mass % of units derived from ethylene, and a linear diblock copolymer including at least one block derived primarily from a vinyl aromatic hydrocarbon monomer, and at least one block derived primarily from diene monomer.

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