Patents Assigned to Paragon Optical, Inc.
  • Patent number: 4769431
    Abstract: A copolymer composition, especially suited for fabricating optical lenses comprising a copolymer of copolymerized comonomers which include in weight percent about one to about twenty percent by weight of an acryloxyalkylsilanol; about one to about fifteen percent of a polyacryloxyalkylpolysiloxane; about thirty to about seventy five percent of an siloxy substituted ester of acrylic or methacrylic acid; from about one to about 35 percent of an alkyl or cycloalkyl acrylate or methacrylate having from one to twenty carbon atoms; from about one to about twenty percent of a polyol diacrylate; and from about one to about twenty percent of a wetting monomer.Contact lenses and contact lens buttons are formed of such copolymer of copolymerized comonomers by conventional techniques, by injection molding, and by compression molding.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: September 6, 1988
    Assignee: Paragon Optical Inc.
    Inventor: Donald J. Ratkowski
  • Patent number: 4661573
    Abstract: New copolymer composition, methods for processing the copolymers into optical devices and articles resulting therefrom, especially intraocular and contact lenses having outstanding extended wear and daily wear properties. The composition comprises, in weight percent: from 3% to 35% polyfluoroalkyl acrylate; from 45% to 65% acryloxyalkylpolysiloxane; 1% to 15% acryloxyalkylsilanol; 2% to 20% polyacryloxyalkylpolysiloxane; 2% to 15% polyol polyacrylate and 2% to 15% polymerizable ethylenically unsaturated monomeric wetting agent such as acrylic acid. The composition may also contain 0 to 15% acrylic acid ester of a monohydric alcohol having no more than 20 carbon atoms and from 0.05% to about 2.0% of a free radical initiator.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: April 28, 1987
    Assignee: Paragon Optical Inc.
    Inventors: Donald J. Ratkowski, William J. Burke
  • Patent number: 4582884
    Abstract: A copolymer composition, especially suited for fabricating optical lenses comprising a copolymer of copolymerized comonomers which include about one to about 25 percent by weight of an acryloxyalkylsilanol; about 0.5 to about 15 percent by weight of a polyacryloxyalkylpolysiloxane; about 5 to about 60 percent by weight of an siloxy substituted ester of acrylic or methacrylic acid; and from about 35 to about 90 percent by weight of an acrylic or methacrylic ester of an alkanol having from one to twenty carbon atoms.Contact lenses and contact lens buttons are formed of such copolymer of copolymerized comonomers by conventional techniques, by injection molding, and by compression molding.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: April 15, 1986
    Assignee: Paragon Optical, Inc.
    Inventor: Donald J. Ratkowski
  • Patent number: 4535138
    Abstract: A copolymer composition, especially adapted for use in fabricating a contact lens comprises a copolymer of comonomers which include about 1-95 parts by weight of hydroxy silane esters of acrylic or methacrylic acid having a silanol functionality of 10-20% and about 99-5 parts by weight of a C.sub.1 -C.sub.20 alkyl ester of acrylic or methacrylic acid. Contact lenses and contact lens buttons are formed of such copolymer by conventional techniques and also by injection molding and by compression molding.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: August 13, 1985
    Assignee: Paragon Optical, Inc.
    Inventors: Donald J. Ratkowski, Ping-Chang Lue
  • Patent number: 4419505
    Abstract: A copolymer composition, specially adapted for use in fabricating a contact lens comprises a copolymer of comonomers which include about 1-95 parts by weight of hydroxy silane esters of acrylic or methacrylic acid and about 99-5 parts by weight of a C.sub.1 -C.sub.20 alkanol ester of acrylic or methacrylic acid.Contact lenses and contact lens blanks are formed of such copolymer by conventional techniques and also by injection molding.
    Type: Grant
    Filed: July 14, 1982
    Date of Patent: December 6, 1983
    Assignee: Paragon Optical, Inc.
    Inventors: Donald J. Ratkowski, Ping-Chang Lue