Patents Assigned to J. R. Richards, Inc.
  • Polarized lens and method of making the same
    Patent number: 4838673
    Abstract: A sunglass lens has two mounds of ground mineral glass laminated together with a polarization film to form a single lens having inner and outer surfaces. The inner surface is provided with an anti-reflectant coating and the outer surface is provided with a bigradient coating. A process for making the lens is also disclosed in which bigradient material is vaporized in a vacuum coating machine.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: June 13, 1989
    Assignee: J. R. Richards, Inc.
    Inventors: Charles Richards, Kazuhiro Kobayashi