ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,777, issued on July 14, was assigned to Heraeus Covantics North America LLC (Chandler, Ariz.).
"Multilayer sintered ceramic body" was invented by Luke Walker (Chandler, Ariz.), Matthew Joseph Donelon (Chandler, Ariz.), Saurabh Waghmare (Chandler, Ariz.) and Lillan Thompson (Chandler, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a multilayer sintered ceramic body comprising at least one first layer comprising poly crystalline YAG, wherein the at least one first layer comprising poly crystalline YAG comprises pores wherein the pores have a maximum size of from 0.1 to 5 micro metre, at least one second layer comprising alumi...