Patents by Inventor Alfred A. Gordon

Alfred A. Gordon 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).

  • Transparency fabrication method
    Patent number: 4052494
    Abstract: A method and apparatus utilized in forming a hemispherical shape from a cast thermoplastic acrylic resin sheet or the like, dyeing the inside surface of the hemisphere to provide a uniform color density or a color density variation increasing from light to dark from the horizon to the zenith point of the hemisphere, heating the hemisphere to its forming temperature, causing it to revert to a flat sheet, and reverse forming the hemisphere to have the dyed surface on the outside.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: October 4, 1977
    Assignee: Northrop Corporation
    Inventors: Peter P. Garrigan, Alfred A. Gordon, Walter W. Watson