ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,770, issued on Dec. 30, was assigned to Stratasys Inc. (Minnetonka, Minn.).
"3D printing system" was invented by Francis Kenyon Whetsell (Ventura, Calif.) and Miguel Cuevas Sandoval (Camarillo, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A 3D printing system may include a tank in which a bottom of the tank is formed by a radiation-transparent flexible membrane, a spill tray with an outer wall configured to contain liquid resin that inadvertently leaks out from the bottom of the tank, and a light source configured to project radiation towards the bottom of the tank. The spill tray may contain an inner opening that allows the radiation from ...