ALEXANDRIA, Va., June 12 -- United States Patent no. 12,296,530, issued on May 13, was assigned to SprintRay Inc. (Los Angeles).

"Apparatus and method for three-dimensional printing" was invented by Jing Zhang (Los Angeles).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention is generally a 3D printer configured for printing 3D objects using a high-viscosity photosensitive material. The 3D printer may include a fluid retaining assembly which comprises a rotating tank. A printing platform is situated in a manner such that a bottom surface of the printing platform makes contact with the printing solution in the tank. To facilitate printing using the high-viscosity printing material, a scraper assembly m...