ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,527, issued on Sept. 9, was assigned to DISCO Corp. (Tokyo).
"Grinding method for circular plate-shaped workpiece" was invented by Yoshikazu Suzuki (Tokyo) and Daisuke Tanemura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a grinding method that is applied when a workpiece having a first surface and a second surface is to be ground from the second surface. The grinding method includes a first grinding step of causing first grindstones to come into contact with the workpiece to grind the workpiece and thereby form on the workpiece a circular plate-shaped first thin plate portion and an annular first thick plate portion surr...