ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,143, issued on May 5.
"Vacuum coating apparatus for uniformly distributing metal vapor using uniform mixing buffer structure" was invented by Sanbing Ren (Shanghai), Fei Xiong (Shanghai), Junfei Fan (Shanghai), Yueming Zhou (Shanghai) and Shanqing Li (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed in the present invention is vacuum coating apparatus for uniformly distributing metal steam using a uniform mixing buffer structure, comprising a crucible, wherein an induction heater for heating molten metal in the crucible to form metal steam is arranged outside of the crucible. A top of the crucible is connected to a flow distribution t...