ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,722, issued on Jan. 27, was assigned to POSCO Co. Ltd (Pohang-si, South Korea).
"Plated steel sheet for hot press forming" was invented by Hyeon-seok Hwang (Gwangyang-si Jeollanam-do, South Korea) and Kkochnim Oh (Buk-gu Gwangju, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A plated steel sheet for hot press forming with improved hydrogen delayed fracture properties is disclosed. The disclosed plated steel sheet includes a base steel sheet, and a plating layer formed on a surface of the base steel sheet and including, by weight, Si: 5.0 to 15.0%, Zn: 10.0 to 30.0%, Fe: 4.0 to 12.0%, and the remainder including Al and unavoidable impuri...