Patents by Inventor Irby H. Leach

Irby H. Leach has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of molding aqueous settable slurries containing shredded open-cell polystyrene particles
    Patent number: 4100242
    Abstract: Closed cell foamed polystyrene beads are shredded to form small size, open-celled foam particles. The particles are mixed with a slurry of a granulate and a liquid whereby the slurry enters the open cells to increase the density of the particles. After an even distribution of the particles throughout the slurry is obtained the mixture is dried to form granulate objects, such as boards, having an even distribution of foamed polystyrene particles therein to reduce the density of the object.
    Type: Grant
    Filed: August 10, 1972
    Date of Patent: July 11, 1978
    Inventor: Irby H. Leach