Patents by Inventor Wilfred Houle

Wilfred Houle 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).

  • Injection mold design, method for in-mold coating of lenses, and coated lenses
    Patent number: 7922942
    Abstract: A method and apparatus for coating lenses within an injection molding machine having a concave optical insert with a perimeter edge that meets the receiver ring in an annular contact region. A channel is formed throughout the annular contact region. When molding a lens with the apparatus, and according to the method, a closed-loop coating containment lip is formed by the channel. After the lens has solidified and the mold is opened, a predetermined volume of coating solution is applied and the mold is re-clamped. A uniformly thin layer of coating is cured on to the convex lens surface by avoiding coating run off and preventing mold contamination.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: April 12, 2011
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Hao-Wen Chiu, Matthew Lockwood, Wilfred Houle
  • INJECTION MOLD DESIGN, METHOD FOR IN-MOLD COATING OF LENSES, AND COATED LENSES
    Publication number: 20100140819
    Abstract: A method and apparatus for coating lenses within an injection molding machine having a concave optical insert with a perimeter edge that meets the receiver ring in an annular contact region. A channel is formed throughout the annular contact region. When molding a lens with the apparatus, and according to the method, a closed-loop coating containment lip is formed by the channel. After the lens has solidified and the mold is opened, a predetermined volume of coating solution is applied and the mold is re-clamped. A uniformly thin layer of coating is cured on to the convex lens surface by avoiding coating run off and preventing mold contamination.
    Type: Application
    Filed: December 5, 2008
    Publication date: June 10, 2010
    Inventors: Hao-Wen Chiu, Matthew Lockwood, Wilfred Houle