ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,978, issued on May 20, was assigned to Effusiontech IP Pty Ltd (Victoria, Australia).
"Method of 3D printing" was invented by Steven Camilleri (Bayview, Australia), Sylvain Laversanne (Coburg, Australia) and Andrew Duguid (Dandenong, Australia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of 3D printing an item, wherein a spray material comprising a powder entrained in an oxygen comprising carrier gas is emitted from a spray nozzle 8. The nozzle 8 comprises a constricted throat 11 that has a thermal conductivity of at least 10 W/mk and a hardness of at least 10 Rockwell C (HRC). The temperature of the throat does not exceed 250deg C., and ...