US Patent Issued to NIPPON STEEL on March 17 for "Grain oriented electrical steel sheet and producing method thereof" (Japanese Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,107, issued on March 17, was assigned to NIPPON STEEL Corp. (Tokyo).

"Grain oriented electrical steel sheet and producing method thereof" was invented by Takashi Kataoka (Tokyo), Yoshiyuki Ushigami (Tokyo), Shuichi Nakamura (Tokyo), Hiroyasu Fujii (Tokyo) and Yoichi Zaizen (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A grain oriented electrical steel sheet includes: by mass %, 0.010% or less of C; 2.50 to 4.00% of Si; 0.0010 to 0.0100% of acid soluble Al; 0.012% or less of N; 1.00% or less of Mn; 0.02% or less of S; and a balance comprising Fe and impurities, and has a tension-insulation coating at steel sheet surface and a SiO2 intermedia...