Patents by Inventor Raymond R. Perkins

Raymond R. Perkins 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).

  • Layered devices having surface curvature
    Patent number: 4989226
    Abstract: A method of treating a substrate having first and second sides with corresponding oppositely facing first and second surfaces, to produce curvature in the first surface. The method includes the steps of removing material, according to a predetermined pattern, from the second side of the substrate, and applying a stress-producing film of material to at least one surface of the substrate to thereby cause the substrate to bend to produce the desired curvature in the first surface.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: January 29, 1991
    Assignee: Brigham Young University
    Inventors: Richard C. Woodbury, Raymond R. Perkins, James M. Thorne, Larry V. Knight