Patents by Inventor Lance Earl Larsen

Lance Earl Larsen 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).

  • Well cap method and apparatus
    Patent number: 7469742
    Abstract: A gas well cap seal assembly adapted to seal the casing bowl of a gas well and to pressurize the annulus region between the inner surface of the well bore and the outer surface of the well casing which is filled with wet cement. The pressurized annulus aids in the prevention of forming gas bubbles and gas leakage paths in the annulus region.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: December 30, 2008
    Inventor: Lance Earl Larsen