US Patent Issued to MARKFORGED on March 31 for "Three dimensional printing of composite reinforced structures" (Massachusetts Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,547, issued on March 31, was assigned to MARKFORGED INC (Waltham, Mass.).

"Three dimensional printing of composite reinforced structures" was invented by Gregory Thomas Mark (Newton, Mass.) and Antoni S. Gozdz (Stow, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Various embodiments related to three dimensional printers, and reinforced filaments, and their methods of use are described. In one embodiment, a void free reinforced filament is fed into a conduit nozzle. The reinforced filament includes a core, which may be continuous or semi-continuous, and a matrix material surrounding the core. The reinforced filament is heated to a temperature ...