Patents Examined by Melvyn I. Marcus
  • Silicone-containing contact lens material and contact lenses made thereof
    Patent number: 4625007
    Abstract: Multifunctional organopolysiloxane resin systems are provided whose starting materials comprise a reactive vinyl containing silane, a disubstituted silane and a trisubstituted silane hydrolyzed together to form a resin system. The preferred material of the resin system has a viscosity of from 7 to 70 centistokes at 25.degree. C. The preferred material is in the form of a contact lens and also contains an ester and a hydrophilic agent.
    Type: Grant
    Filed: January 18, 1985
    Date of Patent: November 25, 1986
    Assignee: Polymer Technology Corporation
    Inventors: Edward J. Ellis, Jeanne Y. Ellis