ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,273, issued on May 27, was assigned to VICAT (Paris la Defense, France).
"Cement composition for 3D printing and method of use" was invented by Olivier Martinage (Lyons, France), Damien Rogat (Villette d'Anthon, France) and Laury Barnes-Davin (Voiron, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A novel cement composition for 3D printing including has 90% to 99.5% by weight of one or more cements selected from a Portland cement, an aluminous cement, a sulphoaluminous cement and a prompt natural cement; and has 0.5% to 10% by weight of a silicoaluminous filler having a specific surface area of at least 5 m2/g, as well as a method for impleme...