Patents by Inventor William Donald Charles Dorward

William Donald Charles Dorward 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).

  • Water purification apparatus and method of using the same
    Patent number: 7402239
    Abstract: A water purification apparatus, comprising a water pump, wherein the water pump inlet port receives water from an external source, a nonreturn valve in fluid communication with the water pump outlet port, and an ionizer chamber in fluid communication with the nonreturn valve output end, wherein the ionizer chamber doses a bacteriacide into water contained in the ionizer chamber. The apparatus also includes a filter, wherein the input end of the filter is in fluid communication with the output end of the ionizer chamber.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: July 22, 2008
    Assignee: Ionics Perpetual, Inc.
    Inventor: William Donald Charles Dorward