Patents by Inventor Margaret Wu, legal representative

Margaret Wu, legal representative 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).

  • Method of purifying hydrocarbons and regeneration of adsorbents used therein
    Patent number: 8262773
    Abstract: An improved method is provided for removing contaminants from a hydrocarbon stream, such as a stream of raw natural gas. The contaminated hydrocarbon stream is passed through a first adsorbent bed containing molecular sieves to adsorb contaminants on the molecular sieves, thereby removing at least some of the contaminants from the hydrocarbon stream. The contaminated hydrocarbon stream may optionally be passed through a second adsorbent bed containing a desiccant material other than molecular sieves. The molecular sieves are regenerated using a wet regeneration process in which both the water content and temperature of the regeneration fluid stream are staged.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: September 11, 2012
    Assignee: ExxonMobil Upstream Research Company
    Inventors: P. Scott Northrop, Francis S. Wu, Margaret Wu, legal representative, Narasimhan Sundaram