Patents Assigned to University of Pittsburagh - of the Commonwealth System of Higher Education
  • Contact lenses colored with crystalline colloidal array technology
    Patent number: 7059719
    Abstract: A colored contact lens whose color is produced by Bragg diffraction incorporates a crystalline colloidal ordered array of particles to impart vivid sparkling color to the whole lens or a portion of the lens. In some embodiments, for example, only portions of the lens that would be located on the iris of the eye may be colored.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: June 13, 2006
    Assignee: University of Pittsburagh - of the Commonwealth System of Higher Education
    Inventor: Sanford Asher