Patents Assigned to VISCO VISION INC.
  • Polymerizable composition for coloring contact lenses
    Patent number: 9482881
    Abstract: The disclosure is related to a polymerizable composition for coloring contact lens, comprising a composite colorant and at least one hydrophilic monomer. The composite colorant is produced by a reaction of a colorant precursor and a (methyl)methacryloxy group-containing silane coupling agent. The colorant precursor is produced by a reaction of a metal oxide and a siloxane compound under alkaline solution.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: November 1, 2016
    Assignees: BenQ Materials Corporation, VISCO VISION INC.
    Inventors: Fan-Dan Jan, Tsung-Jung Cheng