Patents Represented by Attorney, Agent or Law Firm John M. Loreyzen
  • Method of producing gypsum/fiber board
    Patent number: 6508895
    Abstract: A gypsum/fiber board having improved impact resistance is produced by mixing predetermined amounts of fibers, calcined gypsum and water to form a mixture of wetted, loose fibers; laying out a reinforcing mesh over the upper surface of a forming belt; depositing said mixture on said mesh to form a layer of said mixture, said; and compressing said mesh together with said layer of mixture to embed said mesh in the lower surface of said layer to form a board composed of bonded fibers and gypsum with said mesh embedded in the surface thereof.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: January 21, 2003
    Assignee: United States Gypsum Co
    Inventors: Michael R. Lynn, Frederick T. Jones, Gregory J. Cormier