Patents by Inventor William G. Higman

William G. Higman 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).

  • Multi-layered conduit repair system
    Patent number: 9581279
    Abstract: A conduit repair liner includes at least two sheets of planar material that are connected to each other as pages of a book and coated with silica resin then closed against one another to form the conduit repair liner for wrapping around a carrier. The conduit repair liner includes a feature for removably affixing the conduit repair liner to the carrier during positioning within a failed conduit.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: February 28, 2017
    Inventor: William G. Higman
  • Apparatus for lateral line repair
    Patent number: 6701966
    Abstract: An improved apparatus for repairing a pipeline by the insertion of a resin-impregnated tubular liner is disclosed wherein the improvement resides in an end cap that is adhesively attached to one end of the liner, the end cap having a pull tab formed thereon and a rope attached thereto. Once the liner has been inverted into the pipeline being repaired and the resin-impregnated tubular liner has been disposed into intimate contact with the interior surface of the pipeline and allowed to cure, the end cap is easily stripped from the liner by pulling on the rope.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: March 9, 2004
    Assignee: Infrastructure Repair Systems, Inc.
    Inventor: William G. Higman