Patents by Inventor N. Thornton Lipscomb

N. Thornton Lipscomb 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).

  • Plastic lens and method for the production thereof
    Patent number: 6730244
    Abstract: A method for making a plastic lens and a plastic lens made thereby. The method comprises disposing a liquid monomer or a monomer mixture and a photosensitive initiator into a mold cavity and directing ultraviolet light to act on the lens forming material in the cavity to produce a lens therefrom.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: May 4, 2004
    Assignee: Q2100, Inc.
    Inventors: N. Thornton Lipscomb, Omar M. Buazza
  • Apparatus for the production of plastic lenses
    Patent number: 6494702
    Abstract: Apparatus for making a plastic lens. Apparatus includes a mold cavity and a cooling fluid distributor. The apparatus is adapted to produce a plastic lens from a liquid composition.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: December 17, 2002
    Assignee: Q2100, Inc.
    Inventors: Omar M. Buazza, N. Thornton Lipscomb, Stephen C. Luetke, John J. Robinson
  • Plastic lens composition and method for the production thereof
    Patent number: 6331058
    Abstract: A method for making a plastic lens and a plastic lens made thereby. The method comprises disposing a liquid poly(meth)acrylyl monomer, or a monomer mixture, an aromatic bis(allyl carbonate)-functional monomer and a photosensitive initiator into a mold cavity and directing ultraviolet light to act on the lens forming material in the cavity to produce a lens therefrom.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: December 18, 2001
    Assignee: Ophthalmic Research Group International, Inc.
    Inventors: N. Thornton Lipscomb, Omar M. Buazza
  • Plastic lens and plastic lens manufacturing system
    Patent number: 6206673
    Abstract: System for making a plastic lens. Mold members are spaced apart to define a mold cavity. Ultraviolet light is directed against at least one of the mold members to cure a composition and form a substantially clear eyeglass lens in less than one hour.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: March 27, 2001
    Assignee: Ophthalmic Research Group International, Inc.
    Inventors: N. Thornton Lipscomb, Omar M. Buazza
  • Plastic lens composition and method for the production thereof
    Patent number: 6201037
    Abstract: A method for making a plastic lens and a plastic lens made thereby. The method comprises disposing a liquid monomer or a monomer mixture and a photosensitive initiator into a mold cavity and directing ultraviolet light to act on the lens forming material in the cavity to produce a lens therefrom.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: March 13, 2001
    Assignee: Ophthalmic Research Group International, Inc.
    Inventors: N. Thornton Lipscomb, Omar M. Buazza
  • Method for the production of plastic lenses
    Patent number: 5516468
    Abstract: The method includes disposing a liquid monomer or a monomer mixture and a photosensitive initiator into a mold cavity defined by mold members and directing ultraviolet light to act on the lens forming material in the cavity to produce a lens therefrom. The mold members are cooled by air.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: May 14, 1996
    Assignee: Q2100, Inc.
    Inventors: N. Thornton Lipscomb, Omar M. Buazza, Stephen C. Luetke, John J. Robinson
  • Method for the production of plastic lenses
    Patent number: 5415816
    Abstract: Method, for making a plastic lens. The method includes disposing a liquid monomer or a monomer mixture and a photosensitive initiator into a mold cavity and directing ultraviolet light to act on the lens forming material in the cavity to produce a lens therefrom.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: May 16, 1995
    Assignee: Q2100, Inc.
    Inventors: Omar M. Buazza, N. Thornton Lipscomb, Stephen C. Luetke, John J. Robinson
  • Apparatus for the production of plastic lenses
    Patent number: 5364256
    Abstract: Apparatus for making a plastic lens. Mold members are spaced apart to define a mold cavity. Ultraviolet light is directed through a filter and against at least one of the mold members. The mold members are cooled by air.
    Type: Grant
    Filed: January 13, 1994
    Date of Patent: November 15, 1994
    Assignee: Ophthalmic Research Group International, Inc.
    Inventors: N. Thornton Lipscomb, Omar M. Buazza, Stephen C. Luetke, John J. Robinson
  • Plastic lens composition and method for the production thereof
    Patent number: 4879318
    Abstract: A method for making a plastic lens and a plastic lens made thereby. The method comprises disposing a liquid monomer or a monomer mixture and a photosensitive initiator into a mold cavity and directing ultraviolet light to act on the lens forming material in the cavity to produce a lens therefrom. The liquid monomer mixture may include one or more of diethylene glycol bis(allyl)-carbonate, bisphenol A diallyl carbonate, 1,6 hexanedioldimethacrylate, trimethylol propane triacrylate, tetraethylene glycol diacrylate, tripropylene glycol diacrylate, tetrahydrofurfurylmethacrylate, tetrahydrofurfuryl acrylate and styrene. The photosensitive initiator may be selected from the group of 2-hydroxy-2-methyl-1- phenyl-propan-1-one and 1-hydroxycyclohexyl phenyl ketone.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: November 7, 1989
    Assignee: Ophthalmic Research Group International, Inc.
    Inventors: N. Thornton Lipscomb, Omar M. Buazza