ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,079, issued on Aug. 26, was assigned to Heraeus Covantics North America LLC (Chandler, Ariz.).

"Sintered ceramic body of large dimension and method of making" was invented by Luke Walker (Chandler, Ariz.), Matthew Joseph Donelon (Chandler, Ariz.) and Lillian Thompson (Chandler, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of making a sintered ceramic body comprising the steps of disposing a ceramic powder (5) inside an inner volume of a spark plasma sintering tool (1), wherein the tool comprises: a die (2) comprising a sidewall comprising inner and outer walls, wherein the inner wall has a diameter defining the inner volume; upper a...