US Patent Issued to NIPPON STEEL on May 12 for "Burring processing method, burring processing mold, burring processing device, and burring processed product" (Japanese Inventors)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,270, issued on May 12, was assigned to NIPPON STEEL Corp. (Tokyo).

"Burring processing method, burring processing mold, burring processing device, and burring processed product" was invented by Kenichiro Otsuka (Tokyo), Masafumi Azuma (Tokyo), Koichi Hamada (Tokyo), Ryo Tabata (Tokyo), Ryo Urushibata (Tokyo) and Yuuki Kitahara (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a burring processing method, which is a method for forming a buffing processed portion including a raised portion and a curved portion in a metal component having a pilot hole formed therein, the method being characterized by including: a preforming step of enlar...