Patents Represented by Attorney Henry M. Chapin

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  • P-Benzoyloxybenzoate
    Patent number: 3971824
    Abstract: Liquid crystalline materials comprised of substituted phenyl p-benzoyloxybenzoates are useful in electro-optical elements. These materials have low crystal to mesophase transition temperatures and have a broad mesophase temperature range.
    Type: Grant
    Filed: June 11, 1975
    Date of Patent: July 27, 1976
    Assignee: Eastman Kodak Company
    Inventors: James P. Van Meter, Bruce H. Klanderman
  • Liquid crystal compositions, methods and devices
    Patent number: 3963638
    Abstract: Dynamic scattering of nematic liquid crystalline compositions is enhanced by the addition of minor amounts of soluble salts having an organic carboxylate or organic sulfonate anion. The addition of these salts results in a lowering of the operating voltages necessary to obtain dynamic scattering.
    Type: Grant
    Filed: January 8, 1974
    Date of Patent: June 15, 1976
    Assignee: Eastman Kodak Company
    Inventors: Hermann K. Bucher, Thomas R. Criswell