ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,673, issued on Feb. 3, was assigned to QUADRATIC 3D INC. (Charlestown, Mass.).
"Volumetric three-dimensional printing methods" was invented by Peter T. Kazlas (Sudbury, Mass.), Karen Twietmeyer (Belmont, Mass.) and Joshua C. Born (Cambridge, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for printing a three-dimensional object in a volume of a photopolymerizable liquid by photopolymerization, the method comprising: (a) providing a digital representation of a three-dimensional object that has been sliced into a plurality of sequential two-dimensional image slices along the z-direction; (b) processing each of the two-dimensional slices o...