Patents Represented by Attorney Peter Rogaldskyj

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  • Stabilized matrix for photochromic articles
    Patent number: 6083427
    Abstract: A stabilizing matrix for photochromic compounds is disclosed in which a functionalized hindered amine light stabilizer capable of reacting with an isocyanate group is linked to the polymer backbone by a covalent bond to form a grafted structure. The resulting matrix is characterized by having a stabilizing effect on the photochromic dye, in particular, spirooxazines. Preferred specific articles of the invention are photochromic organic lenses.
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: July 4, 2000
    Assignee: Corning Incorporated
    Inventor: David Henry