Patents by Inventor Keith B. Herrin

Keith B. Herrin 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).

  • Methods for the production of tinted contact lenses
    Patent number: 6852254
    Abstract: The invention provides a method for producing tinted contact lenses in which diffusion of monomer into the colorant is aided by heating of the molds. The invention provides a method, and lenses produced by that method, that reduces the residual, unbound polymer on the lens surface and lens surface roughness.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: February 8, 2005
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Terry L. Spaulding, Keith B. Herrin
  • Methods for the production of tinted contact lenses
    Publication number: 20040000732
    Abstract: The invention provides a method for producing tinted contact lenses in which diffusion of monomer into the colorant is aided by heating of the molds. The invention provides a method, and lenses produced by that method, that reduces the residual, unbound polymer on the lens surface and lens surface roughness.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 1, 2004
    Inventors: Terry L. Spaulding, Keith B. Herrin