Patents by Inventor Marcus Hilliard

Marcus Hilliard 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).

  • Acidic gas capture by diamines
    Patent number: 7938887
    Abstract: Compositions and methods related to the removal of acidic gas. In particular, the present disclosure relates to a composition and method for the removal of acidic gas from a gas mixture using a solvent comprising a diamine (e.g., piperazine) and carbon dioxide. One example of a method may involve a method for removing acidic gas comprising contacting a gas mixture having an acidic gas with a solvent, wherein the solvent comprises piperazine in an amount of from about 4 to about 20 moles/kg of water, and carbon dioxide in an amount of from about 0.3 to about 0.9 moles per mole of piperazine.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: May 10, 2011
    Assignee: Board of Regents, The University of Texas System
    Inventors: Gary Rochelle, Marcus Hilliard
  • Acidic Gas Capture by Diamines
    Publication number: 20090211446
    Abstract: Compositions and methods related to the removal of acidic gas. In particular, the present disclosure relates to a composition and method for the removal of acidic gas from a gas mixture using a solvent comprising a diamine (e.g., piperazine) and carbon dioxide. One example of a method may involve a method for removing acidic gas comprising contacting a gas mixture having an acidic gas with a solvent, wherein the solvent comprises piperazine in an amount of from about 4 to about 20 moles/kg of water, and carbon dioxide in an amount of from about 0.3 to about 0.
    Type: Application
    Filed: January 7, 2009
    Publication date: August 27, 2009
    Inventors: Gary Rochelle, Marcus Hilliard