ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,739, issued on Oct. 27, was assigned to MOLDINO Tool Engineering Ltd. (Tokyo).

"Cutting insert and cutting-edge-replaceable cutting tool" was invented by Kenji Nagafuchi (Narita, Japan) and Yoshiyuki Kobayashi (Narita, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "In this cutting insert, two cutting edges respectively including arc-shaped cutting edge parts extending in an arc shape in a plan view and linear cutting edge parts are provided in an intersection ridge line part between a rake face and a flank face. The cutting edges include a convex curved part moving away from a seating face and then moving close to the seating face as at least ...