ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,201, issued on Feb. 24, was assigned to Dentsply Sirona Inc. (York, Pa.).
"Blank for milling or grinding a dental article" was invented by Stefan Fecher (Johannesberg, Germany), Lothar Volkl (Goldbach, Germany), Markus Vollmann (Geinhausen, Germany) and Andreas Gebhardt (Langenselbold, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A blank for milling or grinding a dental article, the blank having a plate-shaped body adapted to be received in a blank holder of a CAM system, which plate-shaped body comprises one or more ceramic or glass ceramic blank portions and two or more through holes, wherein each through hole is contiguous with at least...