ALEXANDRIA, Va., June 19 -- United States Patent no. 12,330,361, issued on June 17, was assigned to FANUC Corp. (Yamanashi, Japan).

"Maintenance method for injection molding machine, injection molding unit, and maintenance jig for injection molding machine" was invented by Kyousuke Nakamura (Yamanashi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "To reliably and safely suppress co-rotation of a screw drive unit when performing a tightening and loosening operation for a threaded fastener which fixes a screw to the screw drive unit. Provided is an injection molding machine 2 in which a threaded fastener 30 is tightened into a first threaded portion 23a of a screw drive unit 21, thereby fixing a screw 1...