ALEXANDRIA, Va., March 5 -- United States Patent no. 12,240,056, issued on March 4, was assigned to TRUMPF LASER GMBH (Schramberg, Germany).

"Ultrashort pulse laser butt welding" was invented by Dominik Bauer (Rottweil, Germany), Helge Hock (Schramberg, Germany), Michael Scharun (Schramberg, Germany) and Manuel Schindler (Empfingen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides methods, devices, and systems for the butt welding of two, e.g., planar, workpieces composed of glass, e.g., quartz glass, by a pulsed laser beam, e.g., an ultrashort pulse ("USP") laser beam, which is directed into the workpiece material parallel to the joining surface of the two workpieces an...