Patents Assigned to U.S. Greentech, LLC
  • Patent number: 6884509
    Abstract: An aggregate turf filler for use with the turf of athletic fields and landscaped areas which comprise crushed silica sand particles (SiO2) which are substantially round in shape and are sized to be between 12 and 40 mesh. An acrylic based sealer covering the outer surface of each of the silica sand particles. Finally, providing that the silica sand particles have a smooth outer surface, possess an angle of repose of less than 30°, repel water, resist compacting, present no damaging sharp edges when incorporated with the turf and are environmentally safe.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: April 26, 2005
    Assignee: U.S. Greentech, LLC
    Inventors: Carl L. Huff, Randolph S. Reddick