Patents by Inventor Kenneth T. Barnhart

Kenneth T. Barnhart 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 making photochromic lenses
    Patent number: 4622184
    Abstract: The instant invention is concerned with the production of essentially transparent glass/plastic composite articles. The articles consist of glass particles having water-free surfaces and dimensions of about 0.5-100 microns dispersed within a plastic matrix, the glass particles constituting up to 50% by weight of the articles and having a refractive index appropriate to or compatible with the plastic matrix.
    Type: Grant
    Filed: December 27, 1985
    Date of Patent: November 11, 1986
    Assignee: Corning Glass Works
    Inventors: Kenneth T. Barnhart, Carlo M. Golino, Candace J. Quinn
  • Composite photochromic lenses
    Patent number: 4581288
    Abstract: The instant invention is concerned with the production of essentially transparent glass/plastic composite articles. The articles consist of glass particles having water-free surfaces and dimensions of about 0.5-100 microns dispersed within a plastic matrix, the glass particles constituting up to 50% by weight of the articles and having a refractive index appropriate to or compatible with the plastic matrix.
    Type: Grant
    Filed: January 23, 1985
    Date of Patent: April 8, 1986
    Assignee: Corning Glass Works
    Inventors: Kenneth T. Barnhart, Carlo M. Golino, Candace J. Quinn