US Patent Issued to Heraeus Covantics North America on Dec. 16 for "Yttria-zirconia sintered ceramics for plasma resistant materials" (Arizona Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,334, issued on Dec. 16, was assigned to Heraeus Covantics North America LLC (Chandler, Ariz.).

"Yttria-zirconia sintered ceramics for plasma resistant materials" was invented by Luke Walker (Chandler, Ariz.) and Matthew Joseph Donelon (Chandler, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a ceramic sintered body comprising yttrium oxide and zirconium oxide wherein the ceramic sintered body comprises not less than 75 mol % to not greater than 95 mol % yttrium oxide and not less than 5 mol % to not greater than 25 mol % zirconium oxide, wherein the ceramic sintered body comprises porosity in an amount of less than 2% by volume, w...