Patents by Inventor Alan G. Stokley

Alan G. Stokley 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).

  • Separation of gas mixtures including hydrogen
    Patent number: 5234472
    Abstract: A process for separation of a gas mixture containing three components, e.g. a mixture comprising hydrogen, carbon monoxide and carbon dioxide produced by steam reforming a hydrocarbon, by pressure swing adsorption is disclosed.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: August 10, 1993
    Assignee: The BOC Group plc
    Inventors: Ramachandran Krishnamurthy, Steven L. Lerner, Yagya Shukla, Alan G. Stokley
  • Separation of gas mixtures including hydrogen
    Patent number: 5112590
    Abstract: A process for separation of a gas mixture containing three components, e.g. a mixture comprising hydrogen, carbon monoxide and carbon dioxide produced by steam reforming a hydrocarbon, by pressure swing adsorption is disclosed.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: May 12, 1992
    Assignee: The BOC Group plc
    Inventors: Ramachandran Krishnamurthy, Steven L. Lerner, Yagya Shukla, Alan G. Stokley
  • Hydrogen and carbon dioxide coproduction apparatus
    Patent number: 5000925
    Abstract: Highly purified gaseous hydrogen and liquid carbon dioxide are produced from a steam reformer/shift converter by passing the effluent from the latter through a multibed hydrogen PSA unit followed by an uncoupled carbon dioxide PSA unit. The carbon dioxide PSA unit produces a hydrogen-rich stream which is recycled to the feed to the steam reformer, a carbon dioxide-rich recycle stream which is recycled to the carbon dioxide PSA unit feed and a carbon dioxide-rich product stream which is introduced under pressure to a liquifier. A waste stream from the liquifier is recycled to the carbon dioxide PSA unit feed. A portion of the carbon dioxide-rich product stream is withdrawn from the compressor at a stage such that its pressure is higher than that of the carbon dioxide PSA unit and returned thereto as a cocurrent purge preceding bed regeneration to obtain product.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: March 19, 1991
    Assignee: The BOC Group, Inc.
    Inventors: Ramachandran Krishnamurthy, Virginia A. Malik, Alan G. Stokley
  • Hydrogen and carbon dioxide coproduction
    Patent number: 4963339
    Abstract: Highly purified gaseous hydrogen and liquid carbon dioxide are produced from a steam reformer/shift converter by passing the effluent from the latter through a multibed hydrogen PSA unit followed by an uncoupled carbon dioxide PSA unit. The carbon dioxide PSA unit produces a hydrogen-rich stream which is recycled to the feed to the steam reformer, a carbon dioxide-rich recycle stream which is recycled to the carbon dioxide PSA unit feed and a carbon dioxide-rich product stream which is introduced under pressure to a liquifier. A waste stream from the liquifier is recylced to the carbon dioxide PSA unit feed. A portion of the carbon dioxide-rich product stream is withdrawn from the compressor at a stage such that its pressure is higher than that of the carbon dioxide PSA unit and returned thereto as a cocurrent purge preceding bed regeneration to obtain product.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: October 16, 1990
    Assignee: The BOC Group, Inc.
    Inventors: Ramachandran Krishnamurthy, Virginia A. Malik, Alan G. Stokley