Patents by Inventor Mark Frederick Wickham

Mark Frederick Wickham 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).

  • Heat exchanger
    Patent number: 6302191
    Abstract: A heat exchange unit for hot gas heat recovery has a heat exchange array situated within a heat exchange duct defined between a cylindrical outer casing and an axially slidable inner sleeve. The sleeve, together with a plug valve at the upper end of the unit, forms a variable position sleeve valve arrangement which simultaneously controls the flow of hot gas through the heat exchange duct and the bypass duct.
    Type: Grant
    Filed: April 10, 2000
    Date of Patent: October 16, 2001
    Assignee: Alstom UK Limited
    Inventors: Mark Frederick Wickham, Richard Jamieson