Patents Assigned to Optical Research Inc.
  • Composition for rigid gas permeable contact lenses
    Patent number: 5162469
    Abstract: A copolymer for making contact lenses comprises, by weight, from about 5 to about 85 percent of a polymerizable fluoromonomer, and from about 5 to about 75 percent of a polymerizable hydrolyzable silicone monomer. A polymerizable hydrophilic monomer can also be included. Additionally, an initiator and a crosslinker are usually preferably employed, but the initiator is not needed when polymerization is aided by radiation from a radioactive source such as cobalt-60.
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: November 10, 1992
    Assignee: Optical Research Inc.
    Inventor: Richard Y. S. Chen