ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,104, issued on Nov. 11, was assigned to JFE STEEL Corp. (Tokyo).
"Method for forming grooves on metal strip surface and method for manufacturing grain-oriented electrical steel sheet" was invented by Shigehiro Takajo (Tokyo) and Takeshi Omura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for forming grooves on a surface of a metal strip, having applying a coating agent for etching resist coating formation to a roller; then, irradiating a laser on the roller while scanning the laser in an axial direction of the roller or in a direction inclined to the axial direction to remove a portion of the coating agent for etching resist coating...