ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,626, issued on Nov. 18, was assigned to LINCOTEK TRENTO S.P.A. (Pergine Valsugana, Italy).
"Plasma spray apparatus and method" was invented by Nelso Antolotti (Pergine Valsugana, Italy) and Girolamo Coppelletti (Ramiola di Madesano, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "Plasma spray apparatus for coating substrates, including at least a working chamber including a plasma torch and at least a substrate support, in which an inert gas or a mixture of inert gases is contained at a pressure which is close to the normal pressure, and at least a gas circuit, in communication with said working chamber, including recirculating means of the ine...