ALEXANDRIA, Va., April 7 -- United States Patent no. 12,594,622, issued on April 7, was assigned to Wolfspeed Inc. (Durham, N.C.).
"Laser-assisted method for parting crystalline material" was invented by Matthew Donofrio (Raleigh, N.C.), John Edmond (Durham, N.C.), Harshad Golakia (Morrisville, N.C.) and Eric Mayer (Raleigh, N.C.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A crystalline material processing method includes forming subsurface laser damage at a first average depth position to form cracks in the substrate interior propagating outward from at least one subsurface laser damage pattern, followed by imaging the substrate top surface, analyzing the image to identify a condition indicative of prese...