Patents Represented by Attorney Esther A. Hopkins

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  • Dichroic light polarizers stained with metal chelates
    Patent number: 4133775
    Abstract: Novel dichroic light polarizers and methods for preparing them are disclosed. These polarizers are stained with metal chelates having a repeating structural formula selected from ##STR1## WHEREIN Me represents a metal of the first, second or third transition metal series, Q and T are bridging groups and n is a whole number between 2-10, inclusive.
    Type: Grant
    Filed: February 4, 1977
    Date of Patent: January 9, 1979
    Assignee: Polaroid Corporation
    Inventor: Stanley M. Bloom