ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,457, issued on March 31, was assigned to DISCO Corp. (Tokyo).
"Spindle unit and processing apparatus" was invented by Koji Watanabe (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A spindle unit includes a casing defining a spindle housing space, a spindle housed in the spindle housing space with a gap from an inner wall of the casing and has a first large-diameter part and a second large-diameter part separated from the first large-diameter part in the axial direction, a motor coupled to a base end part of the spindle, a high-pressure air source, and a valve between the air source and an air supply path. When the valve is opened to introduce...