ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,554, issued on Oct. 21, was assigned to DISCO Corp. (Tokyo).
"Laser processing apparatus" was invented by Jonghyun Ryu (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a laser processing apparatus that processes a workpiece by irradiation with a laser beam. The laser processing apparatus includes a holding unit including a holding surface that holds the workpiece and a laser irradiation unit that irradiates the workpiece held by the holding unit with the laser beam. The laser irradiation unit includes a laser oscillator, a collecting lens that focuses the laser beam emitted from the laser oscillator, and a foreign matter adhes...