ALEXANDRIA, Va., June 6 -- United States Patent no. 12,280,586, issued on April 22, was assigned to JAPAN AVIATION ELECTRONICS INDUSTRY Ltd. (Tokyo).

"Gravure plate for wiring printing" was invented by Akitoshi Sakaue (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a gravure plate for wiring printing on which a recessed portion defining a wiring pattern is formed on a plate surface, a projecting portion for reducing a volume of the recessed portion is formed on a bottom surface of the recessed portion. A contour of the projecting portion in cross section parallel to the plate surface has a semicircular arc shape, which protrudes toward one side in one direction that is parallel to the plate surface,...