ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,670, issued on Feb. 3, was assigned to xolo GmbH (Berlin).

"Method and device for producing a three-dimensional object in an optically reactive starting material" was invented by Martin Regehly (Berlin).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for producing a three-dimensional object in an optically reactive starting material, comprising: providing an optically reactive starting material (4) in a working volume (5), wherein the optically reactive starting material (4) contains active molecules of a dual-color photoinitiator; and optically processing the starting material (4) to produce a three-dimensional object...