ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,551,950, issued on Feb. 17, was assigned to KORLOY INC. (Seoul, South Korea).
"Hard coating film for cutting tool" was invented by Jin-han Gwon (Cheongju-si, South Korea), Seung-su Ahn (Cheongju-si, South Korea) and Je-hun Park (Cheongju-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a cutting tool composed of a hard base material, such as cemented carbide, cermet, ceramic, and cubic boron nitride, and a hard coating film formed on the hard base material. A hard coating film for a cutting tool according to the present invention is formed in a multi-layered structure on a base material of a cutting tool, w...