Patents by Inventor Timothy Higgs

Timothy Higgs 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).

  • Silicone hydrogels and methods of manufacture
    Patent number: 8729149
    Abstract: Embodiments of silicone hydrogels, ophthalmic lenses made therefrom, and methods of making the same are described. Fully hydrated silicone hydrogels have relatively high water content and oxygen permeability, along with relatively low modulus of elasticity. Embodiments of the silicone hydrogels in substantially dehydrated condition are adapted to lathe cutting at or above room temperature. Variations of the silicone hydrogels include silicon-containing monomers in an amount of 7.5% or greater by weight, a hydrophilic substituted N-vinyl acetamide monomer, and a hydrophilic non-acetamide monomer in an amount resulting in a hydrophilic substituted N-vinyl acetamide monomer to hydrophilic non-acetamide monomer weight to weight ratio of greater than 2.1 to 1.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: May 20, 2014
    Inventors: Timothy Higgs, Tristan Tapper, Richard Young
  • Silicone hydrogels and methods of manufacture
    Patent number: 8440738
    Abstract: Embodiments of silicone hydrogels, ophthalmic lenses made therefrom, and methods of making the same are described. Fully hydrated silicone hydrogels have relatively high water content and oxygen permeability, along with relatively low modulus of elasticity. Embodiments of the silicone hydrogels in substantially dehydrated condition are adapted to lathe cutting at or above room temperature. Variations of the silicone hydrogels include silicon-containing monomers in an amount greater than 25% by weight, a hydrophilic substituted N-vinyl acetamide monomer in an amount greater than 30% by weight, and a hydrophilic non-acetamide monomer in an amount resulting in a hydrophilic substituted N-vinyl acetamide monomer to hydrophilic non-acetamide monomer weight to weight ratio of greater than 2.1 to 1.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: May 14, 2013
    Inventors: Timothy Higgs, Tristan Tapper, Richard Young
  • Silicone Hydrogels and Methods of Manufacture
    Publication number: 20130046043
    Abstract: Embodiments of silicone hydrogels, ophthalmic lenses made therefrom, and methods of making the same are described. Fully hydrated silicone hydrogels have relatively high water content and oxygen permeability, along with relatively low modulus of elasticity. Embodiments of the silicone hydrogels in substantially dehydrated condition are adapted to lathe cutting at or above room temperature. Variations of the silicone hydrogels include silicon-containing monomers in an amount greater than 25% by weight, a hydrophilic substituted N-vinyl acetamide monomer in an amount greater than 30% by weight, and a hydrophilic non-acetamide monomer in an amount resulting in a hydrophilic substituted N-vinyl acetamide monomer to hydrophilic non-acetamide monomer weight to weight ratio of greater than 2.1 to 1.
    Type: Application
    Filed: January 27, 2012
    Publication date: February 21, 2013
    Applicant: CONTAMAC, LTD.
    Inventors: Timothy Higgs, Tristan Tapper, Richard Young