ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,618, issued on Nov. 18, was assigned to NIPPON STEEL Corp. (Tokyo).
"Non-oriented electrical steel sheet and manufacturing method therefor" was invented by Yoshiaki Natori (Tokyo), Hiroyoshi Yashiki (Tokyo), Minako Fukuchi (Tokyo) and Kazutoshi Takeda (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "This non-oriented electrical steel sheet has a predetermined chemical composition, and in which the tensile strength is 580 MPa or more, the average grain size of a recrystallization part of base iron is 50 micro metre or less, and in inclusions having an equivalent circle diameter of 1 micro metre or more and an S content of 5 mass % or more contai...