Patents by Inventor Geoffrey J. Hardwick

Geoffrey J. Hardwick 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).

  • Gas-fired water heaters
    Patent number: 4530347
    Abstract: A compact gas-fired water heater in which a reservoir of bulk water is bath heated, indirectly by a gas burner-fired immersion tube and directly heated by mutual contact between the hot flue gases from the immersion tube outlet and feed water droplets as they pass each other in a contra-flow through apertures in a plurality of plates.
    Type: Grant
    Filed: August 17, 1984
    Date of Patent: July 23, 1985
    Assignee: British Gas Corporation
    Inventors: Michael J. Baker, Geoffrey J. Hardwick