ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,697,798, issued on Aug. 4, was assigned to Impossible Objects Inc. (Northbrook, Ill.).
"Three-dimensional printed composite articles" was invented by Robert Swartz (Highland Park, Ill.), Buckley Crist (Wilmette, Ill.), Eugene Gore (Des Plaines, Ill.) and Joseph M. Jacobson (Newton, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A 3D object according to the invention comprises substrate layers infiltrated by a hardened material. The 3D object is fabricated by a method comprising the following steps: Position powder on all or part of a substrate layer. Repeat this step for the remaining substrate layers. Stack the substrate layers. Transform the powd...