Patents by Inventor George Hepworth

George Hepworth 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).

  • EROSION CONTROL BAG
    Patent number: 3957098
    Abstract: An erosion control bag of dark-colored fabric for underwater use and light-colored for other use is disclosed having a porosity of 10 to 35 cubic feet per minute so that air and water may escape from the bag as water and a filler are pumped into the bag. The bag has a self-sealing opening so that it can be filled while positioned in situ below water level.
    Type: Grant
    Filed: June 26, 1972
    Date of Patent: May 18, 1976
    Inventors: George Hepworth, Joseph F. Kelly