Patents by Inventor Frederick William Thomas

Frederick William Thomas 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).

  • Lining of landfill sites
    Patent number: 6241423
    Abstract: A landfill site is lined by attaching an impermeable line (90) to a support structure for the purpose of containing waste material and preventing substances from draining or being leached from the waste into the subsoil. The support structure comprises a plurality of substantially rectangular panels (10) with rolled edges (14, 15, 16, 17) and their corners removed. The panels are supported and located adjacent to the wall of the landfill site in a planar array by a plurality of bolts (30) which are connected to the wall of the landfill site and pass through the opening (32) constituted by the absent comers of the panels.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: June 5, 2001
    Assignee: Woodman IP Holdings Limited
    Inventor: Frederick William Thomas