ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,052, issued on April 15, was assigned to JFE STEEL Corp. (Tokyo).
"Pressed component manufacturing method" was invented by Kento Fujii (Tokyo), Toyohisa Shinmiya (Tokyo) and Yuji Yamasaki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pressing technology for reducing tensile residual stress generated on a sheared edge face of a metal sheet after press forming in order to prevent occurrence of a delayed fracture on the sheared edge face. A pressed component manufacturing method for manufacturing a pressed component by press-forming a metal sheet having a sheared edge face includes a first press forming step in which it is estimated that tensi...