Patents Assigned to Embelton-Grail, Inc.
  • Roof tile and tile composition of matter
    Patent number: 4514947
    Abstract: A roof tile made of a composition of matter comprising cement, silica sand, iron oxide pigment, acrylic polymer resin, an antifoaming agent and water, and formed into a shape having a top surface, a bottom surface, a top end, a butt end, and with a longitudinal side edge having a longitudinal flange, and another longitudinal side edge having a longitudinal concavity, with a plurality of ribs formed in the bottom surface, and reinforcing wire embedded in said ribs and the bottom perimeter of the tile.
    Type: Grant
    Filed: May 18, 1983
    Date of Patent: May 7, 1985
    Assignee: Embelton-Grail, Inc.
    Inventor: Donald J. Grail