Patents by Inventor Loren E. Gearhart

Loren E. Gearhart 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).

  • Carbon dioxide purification
    Patent number: 8628601
    Abstract: A process for the recovery of carbon dioxide from a gas mixture that includes pretreating a gas mixture comprising carbon dioxide, water vapor, and one or more light gases in a pretreating system to form a cooled gas mixture, fractionating the cooled gas mixture to recover a bottoms fraction comprising carbon dioxide and an overheads fraction comprising carbon dioxide and the light gases, passing the overheads fraction over a membrane selective to carbon dioxide to separate a carbon dioxide permeate from a residue gas comprising the light gases, recycling the carbon dioxide permeate to the pretreating system, and recovering at least a portion of the bottoms fraction as a purified carbon dioxide product stream is described.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: January 14, 2014
    Assignee: Lummus Technology Inc.
    Inventors: Loren E Gearhart, Sanjiv N Patel, David R Koch
  • Carbon dioxide purification
    Patent number: 8337587
    Abstract: A process for the recovery of carbon dioxide from a gas mixture that includes pretreating a gas mixture comprising carbon dioxide, water vapor, and one or more light gases in a pretreating system to form a cooled gas mixture, fractionating the cooled gas mixture to recover a bottoms fraction comprising carbon dioxide and an overheads fraction comprising carbon dioxide and the light gases, passing the overheads fraction over a membrane selective to carbon dioxide to separate a carbon dioxide permeate from a residue gas comprising the light gases, recycling the carbon dioxide permeate to the pretreating system, and recovering at least a portion of the bottoms fraction as a purified carbon dioxide product stream is described.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: December 25, 2012
    Assignee: Lummus Technology Inc.
    Inventors: Loren E. Gearhart, Sanjiv N. Patel, David Koch
  • CARBON DIOXIDE PURIFICATION
    Publication number: 20090288556
    Abstract: A process for the recovery of carbon dioxide from a gas mixture that includes pretreating a gas mixture comprising carbon dioxide, water vapor, and one or more light gases in a pretreating system to form a cooled gas mixture, fractionating the cooled gas mixture to recover a bottoms fraction comprising carbon dioxide and an overheads fraction comprising carbon dioxide and the light gases, passing the overheads fraction over a membrane selective to carbon dioxide to separate a carbon dioxide permeate from a residue gas comprising the light gases, recycling the carbon dioxide permeate to the pretreating system, and recovering at least a portion of the bottoms fraction as a purified carbon dioxide product stream is described.
    Type: Application
    Filed: May 20, 2008
    Publication date: November 26, 2009
    Applicant: Lummus Technology Inc.
    Inventors: Loren E. Gearhart, Sanjiv N. Patel, David R. Koch