US Patent Issued to NIPPON PAINT SURF CHEMICALS on Dec. 16 for "Aqueous surface treatment agent and surface-treated metal" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,700, issued on Dec. 16, was assigned to NIPPON PAINT SURF CHEMICALS Co. LTD. (Tokyo).

"Aqueous surface treatment agent and surface-treated metal" was invented by Akira Utsunomiya (Tokyo), Shota Sasaki (Tokyo), Yuko Wada (Tokyo) and Ayako Obora (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides an aqueous surface treatment agent which is used for surface treatment of a metal and contains a trivalent chromium compound (A), a water-soluble or water-dispersible acrylic resin (B), a polyfunctional epoxy compound (C) and a phosphoric acid compound (D), wherein: the water-soluble or water-dispersible acrylic resin (B) has ...