Patents by Inventor Richard C. Wiley

Richard C. Wiley 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).

  • Polymer dispersed liquid crystal display with birefringence of the liquid crystal at least 0.23
    Patent number: 5206747
    Abstract: A liquid crystal apparatus (30) comprising a containment medium (56), a birefringent liquid crystal material (38) and a pleochroic dye (54) contained in the liquid crystal material The difference between the ordinary and extraordinary indices of refraction of the liquid crystal material is between about 0.23 and 0.30. The liquid crystal material is dispersed in plural volumes in the containment medium. A pleochroic dye may be present in the liquid crystal material in a concentration of about 0.5% to 3.0%. The apparatus has enhanced backscattering in the field-off state and enhanced light transmission in the field-on state.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: April 27, 1993
    Assignee: Taliq Corporation
    Inventors: Richard C. Wiley, Paul S. Drzaic