ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,321, issued on Nov. 3, was assigned to POSCO Co. LTD (Pohang-si, South Korea).
"High strength steel sheet having excellent workability, and method for manufacturing same" was invented by Jae-Hoon Lee (Gwangyang-si, South Korea) and Ki-Taek Jung (Gwangyang-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a steel sheet that may be used for automobile parts and the like, and to a steel sheet having an excellent balance of strength and ductility, an excellent balance of strength and hole expansion ratio, and an excellent yield ratio evaluation index, and a method for manufacturing the same. The steel sheet includes: by wt %, C: ...