ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,360, issued on March 11, was assigned to Brock USA LLC (Boulder, Colo.).
"Infill for artificial turf system" was invented by Daniel C. Sawyer (Boulder, Colo.), Stephen Keyser (Longmont, Colo.), Steven L. Sawyer (Huntington Beach, Calif.) and Richard R. Runkles (Windsor, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An artificial turf system includes a turf assembly having a turf backing and stands of artificial grass blades extending from the turf backing to form an artificial turf layer. Infill material is placed in between the blades of artificial grass and on top of the turf backing. The infill material has a composition of sand in an amo...