ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,938, issued on Jan. 13, was assigned to SPECTROPLAST AG (Schlieren, Switzerland).
"Apparatus for producing a three-dimensional object" was invented by Petar Stefanov (Zurich, Switzerland) and Manuel Schaffner (Zurich, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for producing a three-dimensional object comprises an energy source of electro-magnetic radiation and an open-top container having a closed bottom and sidewalls, the closed bottom being at least in part transparent for the electro-magnetic radiation. The open-top container is configured to contain solidifiable paste which solidifies in response to the electro-magne...