ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,357, issued on Sept. 30, was assigned to NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO ('S-Gravenhage, Netherlands).
"Printing of energetic materials" was invented by Michiel Hannes Straathof (Delft, Netherlands), Kjeld Jacobus Cornelis Van Bommel (Geldrop, Netherlands) and Christoffel Adrianus Van Driel (Delft, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention is directed to a method for the preparation of an energetic material product such as a propellant or explosive charge or grain. The method includes additive manufacturing with co-extrusion of at least two materials to form a multi-layered ...