Patents by Inventor Frederic Jay Kahn

Frederic Jay Kahn 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).

  • Doped liquid crystal display device
    Patent number: 4059340
    Abstract: The use of dopants enhances optical contrast and range of writing speeds in liquid crystal display devices. Such dopants are characterized by greater solubility in the isotropic phase than in the liquid-crystalline phase of a liquid crystal material.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: November 22, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Frederic Jay Kahn, Gary Newton Taylor