Patents by Inventor Gary D. Clark

Gary D. Clark 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).

  • Inline cartridge filter
    Patent number: 5925243
    Abstract: An inline cartridge filter for treating coolant liquid used to cool industrial application such as cooling towers and chillers, combustion engine includes an annular filter media disposed around a cylindrical biological control element which includes a biocide for controlling the growth of bacteria and a pH control agent for controlling the growth of algae in the coolant liquid. The filter media and biological control element form a disposable filter element which is mounted in a housing.
    Type: Grant
    Filed: February 11, 1997
    Date of Patent: July 20, 1999
    Assignee: Dana Corporation
    Inventors: Gary D. Clark, Johnny H. Wong, Christopher L. Loafman, Michael D. Adams