Patents by Inventor Stephen LeViness

Stephen LeViness 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).

  • Patent number: 7314503
    Abstract: A process for the removal of inert gases, such as nitrogen and carbon dioxide, from methane-containing gases, such as natural gas, including a first stage removal which lowers the total combined inert content to about less than 30% and a second stage removal utilizing a pressure swing adsorption process comprising one or more adsorbent beds comprising contracted titanosilicate-1 adsorbent, wherein the purified methane-containing gas contains less than about 6% total combined inerts.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: January 1, 2008
    Assignee: Syntroleum Corporation
    Inventors: J. Mark Landrum, Branch J. Russell, Kenneth Agee, Stephen LeViness
  • Publication number: 20070212271
    Abstract: A system and method for removing sulfur contaminants from an air stream prior to feeding the air stream to an autothermal reformer. The system includes an air inlet, a first desulfurization reactor, and the autothermal reformer. The air inlet is adapted to allow atmospheric air to enter therethrough to form the air stream. The first desulfurization reactor includes a first fixed bed. The first fixed bed includes one or more metal oxides adapted to remove sulfur dioxide from the air stream to create a desulfurized air stream. The sulfur dioxide is removed from the air stream as the air stream moves through the first desulfurization reactor. The autothermal reformer is adapted to receive the desulfurized air stream and a desulfurized natural gas/steam stream and convert the received desulfurized air stream and the received desulfurized natural gas/steam stream into a synthesis gas stream substantially free of sulfur contaminants.
    Type: Application
    Filed: February 16, 2007
    Publication date: September 13, 2007
    Inventors: Paul Kennedy, Stephen LeViness, Kenneth Agee, Kym Arcuri
  • Publication number: 20050154069
    Abstract: A Fischer-Tropsch process in the presence of nitrogen is provided wherein the Fischer-Tropsch catalyst retains at least 50% of its original activity and about the original C5+ selectivity. A process for pre-conditioning a Fischer-Tropsch catalyst such that no more than 50% of the original catalyst activity is lost while the resultant catalyst retains about its original C5+ selectivity.
    Type: Application
    Filed: January 13, 2004
    Publication date: July 14, 2005
    Applicant: Syntroleum Corporation
    Inventors: Juan Inga, Paul Kennedy, Stephen Leviness
  • Publication number: 20050139072
    Abstract: A process for the removal of inert gases, such as nitrogen and carbon dioxide, from methane-containing gases, such as natural gas, including a first stage removal which lowers the total combined inert content to about less than 30% and a second stage removal utilizing a pressure swing adsorption process comprising one or more adsorbent beds comprising contracted titanosilicate-1 adsorbent, wherein the purified methane-containing gas contains less than about 6% total combined inerts.
    Type: Application
    Filed: December 3, 2004
    Publication date: June 30, 2005
    Inventors: J. Landrum, Branch Russell, Kenneth Agee, Stephen LeViness