Patents by Inventor Thomas Guttman

Thomas Guttman 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 indicating the relative roughness of a surface
    Patent number: 4072425
    Abstract: The relative roughness of a surface, finished with a plurality of uniform rallel grooves, is indicated in a method wherein (a) a focused beam of light is directed normal to the surface, (b) a light-sensitive device is disposed to one side of the beam to receive reflected light of the beam from the surface, (c) relative motion is provided between the beam and the surface, and (d) the energy of the reflected light received by the light-sensitive device is converted to a visual display whose amplitude is a function of the roughness of the surface.
    Type: Grant
    Filed: August 9, 1976
    Date of Patent: February 7, 1978
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Thomas Guttman