US Patent Issued to KAO on June 30 for "Hair treatment method" (Japanese Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,667,536, issued on June 30, was assigned to KAO Corp. (Tokyo).

"Hair treatment method" was invented by Masaki Fukuhara (Arakawa-ku, Japan) and Hiroko Okabe (Kokubunji, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for treating hair, comprising steps 1 and 2 below: (step 1) applying a hair dye composition to hair to dye the hair; and (step 2) applying a hair treatment agent to the hair subjected to hair dyeing in the step 1, the hair treatment agent comprising the following components (A), (B) and (C) and having a pH of 4 or less or 8 or more: (A) an epoxy-aminosilane copolymer which is a reaction product of the following compounds (a) to...