ALEXANDRIA, Va., June 12 -- United States Patent no. 12,296,039, issued on May 13, was assigned to L'OREAL (Paris).
"Composition with long-lasting concealing effects" was invented by Akito Hoshino (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a composition comprising: (a) at least one pigment; (b) at least one first copolymer of at least two monomers selected from (meth)acrylic acid, esters thereof, and salts thereof; (c) at least one second copolymer of styrene or Alpha-methylstyrene and of at least one monomer selected from (meth)acrylic acid, esters thereof, and salts thereof, wherein the weight ratio of the amount of the (c) second copolymer(s)/the amoun...