ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,277, issued on April 22, was assigned to Infineum International Ltd. (Abingdon, Great Britain).
"Lubricant compositions containing styrenic block copolymer" was invented by Yi Zhao (Edison, N.J.), Ronald M. Lewis (Glenmore, Pa.), Ewan K. Galbraith (Brooklyn, N.Y.) and Dominic Collis (Abingdon, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "This invention relates to a lubricating oil composition, or concentrate therefor, comprising or resulting from the admixing of: (i) base oil, (ii) one or more styrenic block copolymers having a radial structure where one or more blocks derived from conjugated diene monomers are distal to the radial ce...