Patents by Inventor Patrick William Liston

Patrick William Liston 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).

  • Precast stormwater inlet filter and trap
    Patent number: 9598850
    Abstract: A filter for a storm water inlet having a surface opening for receiving storm water runoff comprising liquids and solids and discharging said runoff into an interior compartment below having a substantially vertical interior wall or walls defining a cross-sectional area. The filter comprises one or more precast pervious concrete filter elements, the element or elements being formed such that the filter substantially fills the entire cross-sectional area of the interior compartment. Also, a storm water inlet including such a filter, and a method of adding such a filter to a storm water inlet.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: March 21, 2017
    Assignee: Forterra Pipe & Precast, LLC
    Inventor: Patrick William Liston
  • PRECAST STORMWATER INLET FILTER AND TRAP
    Publication number: 20140263004
    Abstract: A filter for a storm water inlet having a surface opening for receiving storm water runoff comprising liquids and solids and discharging said runoff into an interior compartment below having a substantially vertical interior wall or walls defining a cross-sectional area. The filter comprises one or more precast pervious concrete filter elements, the element or elements being formed such that the filter substantially fills the entire cross-sectional area of the interior compartment. Also, a storm water inlet including such a filter, and a method of adding such a filter to a storm water inlet.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: Hanson Pipe & Precast LLC
    Inventor: Patrick William Liston