ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,459,059, issued on Nov. 4, was assigned to DISCO Corp. (Tokyo).
"Laser processing apparatus" was invented by Ryohei Yamamoto (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A laser processing apparatus includes a first reflected light detection unit having a first light receiving element that detects inspection light reflected by a crack in an inspection region located on one side of a focal point in a direction along an X-axis, a second reflected light detection unit having a second light receiving element that detects the inspection light reflected by the crack in the inspection region located on the other side of the focal point in the direction...