Patents by Inventor Lisa A. Folk

Lisa A. Folk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Contact lenses and materials and methods of making same
    Patent number: 5519069
    Abstract: An interpenetrating network copolymer, method of producing same, and method of producing optical lens blanks and finished lenses therefrom. The method broadly involves the preparation of first and second mixtures of polymerizable vinyl monomers and interrupting the polymerization of the first mixture at a relative viscosity of from about 1.05 to about 10 by admixing the partially polymerized first mixture with the second mixture to create a casting solution and thereafter, when desired, polymerizing molded casting solution in heat to create a solid lens material.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 21, 1996
    Assignee: Pilkington Barnes Hind, Inc.
    Inventors: William J. Burke, Lisa A. Folk, Donald J. Ratkowski
  • Contact lenses and materials and methods of making same
    Patent number: 5505884
    Abstract: An interpenetrating network copolymer, method of producing same, and method of producing optical lens blanks and finished lenses therefrom. The method broadly involves the preparation of first and second mixtures of polymerizable vinyl monomers and interrupting the polymerization of the first mixture at a relative viscosity of from about 1.05 to about 10 by admixing the partially polymerized first mixture with the second mixture to create a casting solution and thereafter, when desired, polymerizing molded casting solution in heat to create a solid lens material.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: April 9, 1996
    Assignee: Pilkington Barnes Hind Inc.
    Inventors: William J. Burke, Lisa A. Folk, Donald J. Ratkowski
  • Method of mold contact lenses
    Patent number: 5087392
    Abstract: An interpenetrating network copolymer, method of producing same, and method of producing optical lens blanks and finished lenses therefrom. The method broadly involves the preparation of first and second mixtures of polymerizable vinyl monomers and interrupting the polymerization of the first mixture at a relative viscosity of from about 1.05 to about 10 by admixing the partially polymerized first mixture with the second mixture to create a casting solution and thereafter, when desired, polymerizing molded casting solution in heat to create a solid lens material.
    Type: Grant
    Filed: March 7, 1990
    Date of Patent: February 11, 1992
    Assignee: Sola USA, Inc.
    Inventors: William J. Burke, Lisa A. Folk, Donald J. Ratkowski