ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,766,550, issued on Oct. 20, was assigned to JFE STEEL Corp. (Chiyoda-ku, Japan).
"Surface-treated galvanized steel sheet" was invented by Yukichika Hashizume (Tokyo) and Takeshi Matsuda (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a surface-treated galvanized steel sheet that has excellent delayed fracture resistance and that can be manufactured at low cost. The surface-treated galvanized steel sheet includes a steel sheet having a tensile strength of 1180 MPa or more, a galvanized layer, and a coating, where the coating contains an additive in an amount of 10 mass % or more and 50 mass % or less in terms of solid content. The addit...