Patents by Inventor John S. Williamson

John S. Williamson 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).

  • Stretch-resistant pipe liner
    Patent number: 6732763
    Abstract: This invention provides stretch-resistant liners for lining pipes, pipes lined with stretch-resistant liners, and methods for lining pipes with stretch-resistant liners. The liners are made from a layer of stretch-resistant woven material, which may be a scrim, sandwiched between two layers of non-woven resin-impregnated material to form a laminate structure which is rolled into a tube to provide a liner having concentric sleeves.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: May 11, 2004
    Assignee: Lantor, Inc.
    Inventors: John S. Williamson, Jin Choi
  • Stretch-resistant pipe liner
    Publication number: 20030217777
    Abstract: This invention provides stretch-resistant liners for lining pipes, pipes lined with stretch-resistant liners, and methods for lining pipes with stretch-resistant liners. The liners are made from a layer of stretch-resistant woven material, which may be a scrim, sandwiched between two layers of non-woven resin-impregnated material to form a laminate structure which is rolled into a tube to provide a liner having concentric sleeves.
    Type: Application
    Filed: May 24, 2002
    Publication date: November 27, 2003
    Applicant: Lantor, Inc.
    Inventors: John S. Williamson, Jin Choi