ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,337, issued on Dec. 23, was assigned to Solventum Intellectual Properties Co. (Maplewood, Minn.).
"Process for producing a colored dental zirconia article" was invented by Michael Jahns (Gilching, Germany), Martin Goetzinger (Pflugdorf, Germany) and Sybille A. Schmittner (Inning, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a process of producing a dental zirconia article, the process comprising the step of sintering a porous dental zirconia article, the sintering comprising a heat-treatment segment A characterized by a heating rate of at least 3 K/sec up to a temperature of at least 1,200deg C., the porous dental ...