ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,883, issued on June 30, was assigned to JFE STEEL Corp. (Tokyo).
"Method for forming groove on metal strip surface and method for manufacturing grain-oriented electrical steel sheet" was invented by Shigehiro Takajo (Tokyo), Takeshi Omura (Tokyo) and Nobuko Nakagawa (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A grain-oriented electrical steel sheet with extremely excellent magnetic properties by removing an etching resist coating well to form narrow grooves on a metal strip surface even with low-output laser, while reducing thermal effects on the metal strip caused by laser irradiation, and a method for forming grooves on a metal strip sur...