Patents by Inventor Sheldon D.H. Lee

Sheldon D.H. Lee 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).

  • Device for sampling and enriching impurities in hydrogen comprising hydrogen-permeable membrane
    Patent number: 9555366
    Abstract: Provided herein are methods and devices to enrich trace quantities of impurities in gaseous mixtures, such as hydrogen fuel. The methods and devices rely on concentration of impurities so as to allow the detection of the impurities using commonly-available detection methods.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: January 31, 2017
    Assignee: UChicago Argonne, LLC
    Inventors: Shabbir Ahmed, Dionissios D. Papadias, Sheldon D. H. Lee, Romesh Kumar
  • DEVICE AND METHOD TO SAMPLE AND ENRICH IMPURITIES IN HYDROGEN
    Publication number: 20140360372
    Abstract: Provided herein are methods and devices to enrich trace quantities of impurities in gaseous mixtures, such as hydrogen fuel. The methods and devices rely on concentration of impurities so as to allow the detection of the impurities using commonly-available detection methods.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 11, 2014
    Inventors: Shabbir Ahmed, Dionissios D. Papadias, Sheldon D.H. Lee, Romesh Kumar