ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,836, issued on Dec. 23, was assigned to SprintRay Inc. (Los Angeles).
"Air curtain for photopolymer 3D printer" was invented by Mohamad Janbain (Oberhausen, Germany), Alexandr Shkolnik (Los Angeles) and Kirin Xu (Aliso Viejo, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Apparatuses and methods for making at three-dimensional object from a solidifiable material are shown and described. A pattern generator comprising at least one lens transmits light to a photopolymer that solidifies by curing, cross-section by cross-section, in the shape of received patterns of light. The photopolymer curing reactions are exothermic and generate heat within ...