Patents by Inventor David D. Pertle

David D. Pertle 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).

  • Cutting tool fabrication process
    Patent number: 4681600
    Abstract: A method is provided for making improved molded abrasive tools by applying centifugal force and/or vibratory action to the abrasive particles during the molding operation. The abrasive is thereby forced and/or sifted preferentially into a closely packed surface layer with close conformity to the mold surface.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: July 21, 1987
    Assignee: Extrude Hone Corporation
    Inventors: Lawrence J. Rhoades, William D. Jenkins, David D. Pertle