ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,504, issued on Dec. 16, was assigned to 3D Systems Inc. (Rock Hill, S.C.).

"Build materials for 3D printing" was invented by Pingyong Xu (Valencia, Calif.), John Fong (Temple City, Calif.) and John Stockwell (Sylmar, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Polymerizable liquids are described herein which, in some embodiments, can produce 3D printed articles of high resolution and desirable mechanical properties. In one aspect, a polymerizable liquid comprises an acrylate component, a polymeric additive, and a monomeric curing agent, wherein the acrylate component and monomeric curing agent are copolymerizable upon exposure to light. In...