ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,030, issued on May 20, was assigned to NGK INSULATORS Ltd. (Nagoya, Japan).
"Method of manufacturing ground product and cup grinding stone" was invented by Kazumasa Kitamura (Ichinomiya, Japan), Hirofumi Hosokawa (Nagoya, Japan) and Nobuchika Noguchi (Ichinomiya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Through the following steps (a) and (b), the side surface of a grinding object is ground to manufacture a ground product having a smaller diameter than that of the grinding object. In the step (a), a cup type grinding stone is disposed such that the central axis is parallel offset from a state where the central axis is orthogonal to the c...