Patents by Inventor Jerold W. Ristau

Jerold W. Ristau 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).

  • Apparatus for cleaning a waste water treatment tank
    Patent number: 8499405
    Abstract: An apparatus is provided for cleaning algae and other debris from a water treatment tank including a mechanically driven component. The apparatus includes a breakaway scrubber assembly and a mounting bracket securing the breakaway scrubber assembly to the mechanically driven component.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: August 6, 2013
    Assignee: Ford W. Hall Company
    Inventors: Jerold W. Ristau, Ford W. Hall