Compositions – Light transmission modifying compositions – Displaying color change
Reexamination Certificate
2004-03-04
2010-10-12
Kugel, T. J. (Department: 1796)
Compositions
Light transmission modifying compositions
Displaying color change
C252S582000
Reexamination Certificate
active
07811480
ABSTRACT:
Describes a photochromic article, e.g., an ophthalmic photochromic plastic article, such as a lens, in which the article includes (1) a rigid substrate, e.g., polymeric substrate, such as a thermoset or thermoplastic substrate, (2) a photochromic polymeric coating appended to at least one surface of the substrate, the photochromic polymeric coating containing a photochromic amount of at least one photochromic material, e.g., spirooxazine, naphthopyran and/or fulgide, and (3) a film comprising a maleimide derivative coherently appended to the photochromic coating. Describes also the aforedescribed photochromic article having an abrasion-resistant coating affixed to the maleimide derivative-containing film, e.g., an abrasion-resistant coating comprising an organo silane; and describes further a photochromic article having an antireflective coating affixed to the abrasion-resistant coating.
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Altman Deborah M
Kugel T. J.
Transitions Optical Inc.
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