ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,427,621, issued on Sept. 30, was assigned to NORITAKE Co. Ltd. (Nagoya, Japan).
"Plane polishing machine" was invented by Makoto Sato (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A plane polishing machine polishing one surface of a workpiece flat, the plane polishing machine comprises a stick-on disk decentering jig of a circular plate shape mounted on a rotating polishing surface plate, a jig rotation drive device having a plurality of guide rollers coming into contact with the stick-on disk decentering jig, a rotational direction restriction device permitting rotation of the stick-on disk in a direction identical to a rotational dire...