ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,790, issued on Jan. 27, was assigned to NIPPON STEEL Corp. (Tokyo).
"Hot dip galvannealed steel sheet" was invented by Taihei Kaneto (Tokyo), Takashi Oke (Tokyo), Nayuta Kawazu (Tokyo), Atsushi Komuro (Tokyo) and Tomohiro Miyashita (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hot dip galvannealed steel sheet comprising a base steel sheet and a plating layer. The base steel sheet has a predetermined chemical composition by mass %. An existence ratio ER of internal oxides identified under predetermined conditions by observation of a cross-section of the base steel sheet is 40 % or less and an interval I of internal oxides is 300 micro metre...