ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,792, issued on March 18, was assigned to JFE STEEL Corp. (Tokyo).
"Electrical steel sheet having insulating coating" was invented by Naoki Muramatsu (Tokyo), Nobuko Nakagawa (Tokyo) and Chiyoko Tada (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electrical steel sheet having excellent coating peel resistance that can be exhibited during a stamping process, so that sticking of the coating to a die is inhibited. The electrical steel sheet has an insulating coating disposed on at least one surface of the electrical steel sheet. The insulating coating (i) includes a composite comprising P and Al, (ii) has an aspect ratio in a range of 1 to 10...