ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,505, issued on March 18, was assigned to JFE STEEL Corp. (Tokyo).
"Method for manufacturing motor core" was invented by Souichiro Yoshizaki (Tokyo), Kunihiro Senda (Tokyo), Yoshiaki Zaizen (Tokyo) and Yukino Miyamoto (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a motor core includes a step of manufacturing a motor core by performing melt-cutting on an electrical steel sheet using heat input from a surface, the electrical steel sheet having an average thermal conductivity in depth positions from the surface to one-third depth of a sheet thickness lower than a thermal conductivity in a middle position in a sheet th...