US Patent Issued to SUMITOMO METAL MINING on Sept. 1 for "Anti-counterfeit ink composition, anti-counterfeit ink, and anti-counterfeit printed product" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,165, issued on Sept. 1, was assigned to SUMITOMO METAL MINING Co. LTD. (Tokyo).

"Anti-counterfeit ink composition, anti-counterfeit ink, and anti-counterfeit printed product" was invented by Hirofumi Tsunematsu (Kagoshima, Japan) and Takeshi Chonan (Kagoshima, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides an anti-counterfeit ink composition including organic-inorganic hybrid infrared absorbing particles, and either a dispersant or a surfactant, or both, wherein the organic-inorganic hybrid infrared absorbing particles include infrared absorbing particles and a coating resin that covers at least a part of a surfa...