Patents by Inventor David Mark Stuart

David Mark Stuart 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).

  • Air separation
    Patent number: 5989315
    Abstract: Air is supplied along a pipeline to an apparatus for separating an oxygen-enriched gas stream from the air by vacuum swing adsorption. The oxygen-enriched gas stream is supplied to a burner which fires into a furnace. A hot gas stream leaves the furnace through an outlet. Steam is raised from the hot gas in a waste heat boiler. Steam so raised flows through one or more of the eductors to draw through a pipeline the vacuum necessary for the operation of the vacuum swing adsorption apparatus.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: November 23, 1999
    Assignee: The BOC Group plc
    Inventors: David Mark Stuart, John Robert Coates
  • Gas separation
    Patent number: 5985006
    Abstract: A vacuum swing adsorption apparatus for separating a gas mixture includes a pipeline along which the vacuum is able to be drawn. The apparatus is provided with a plurality of eductors each connected to the pipeline 6 and in parallel with the other eductor respective stop valves. The stop valves are arranged and operable so as to select the number of eductors in communication with the pipeline. Thus the degree of vacuum to which the apparatus is subjected may be varied.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: November 16, 1999
    Assignee: The BOC Group plc
    Inventors: David Mark Stuart, John Robert Coates