US Patent Issued to DISCO on July 7 for "Method of manufacturing grinding wheel" (Japanese Inventors)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,673,398, issued on July 7, was assigned to DISCO Corp. (Tokyo).

"Method of manufacturing grinding wheel" was invented by Hirotoshi Hoshikawa (Tokyo), Xiaoming Qiu (Tokyo) and Masashi Aoki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of manufacturing a grinding wheel includes a surface unevenness forming step of applying ultrasonic vibrations from an ultrasonic vibration applying unit through water to an annular slot defined in a surface of an annular base along circumferential directions thereof, thereby forming surface unevennesses on either one or both of a side surface and a bottom surface of the annular slot, and, after the surface ...