Patents by Inventor Helena Kloubek

Helena Kloubek 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).

  • Casting composition of aromatic polyvinyl monomer, polythiol and epoxy strain reducer
    Patent number: 6391983
    Abstract: A crosslinkable polymeric casting composition comprises an aromatic polyvinyl monomer such as divinyl benzene, a polythiol such as pentaerythritol tetrakis-(3-mercaptopropionate), an epoxide strain-reducing agent such as hexanediol diglycidyl ether, and, optionally, a polymerizable comonomer such as polyethylene glycol dimethacrylate.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: May 21, 2002
    Assignee: Sola International Holdings, Ltd.
    Inventors: Ian Roger Bateman, Huan Kiak Toh, David Robert Diggins, Helena Kloubek
  • Laminate wafers
    Patent number: 6256152
    Abstract: A laminate optical article including a first outer layer; a second outer layer; and an inner layer positioned between said first and second outer layers, the inner layer providing a desirable optical property to the laminate optical article.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: July 3, 2001
    Assignee: Sola International Holdings Ltd.
    Inventors: Peter Wallace Coldrey, Matthew John Cuthbertson, Helena Kloubek, Paul John Coates
  • Method of preparing photochromic article
    Patent number: 5882556
    Abstract: A process for preparing a cross-linked polymeric article, which process includes: providing a cross-linkable polymeric casting composition; and a photochromic composition; subjecting the cross-linkable polymeric casting composition to partial cure, such that the polymer reaches or exceeds its point of gelation; contacting the partially cured gelled polymer with the photochromic composition; and curing the gelled polymer.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: March 16, 1999
    Assignee: Sola International Holdings Ltd.
    Inventors: Colin Maurice Perrott, Kenneth John Pidgeon, Helena Kloubek, Ian Michael Threlfall