Patents by Inventor Charles Benham

Charles Benham 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 AND APPARATUS FOR REGENERATING AN IRON-BASED FISCHER-TROPSCH CATALYST
    Publication number: 20080038159
    Abstract: Solvent extraction is used to remove wax and contaminants from an iron-based Fischer-Tropsch catalyst in a natural circulation continuous-flow system. The wax-free catalyst is then subjected to controlled oxidation to convert the iron to its initial oxidized state, Fe203. Reactivation of the oxide catalyst precursor is carried out by addition of synthesis gas.
    Type: Application
    Filed: October 18, 2007
    Publication date: February 14, 2008
    Applicant: RENTECH, INC.
    Inventors: Belma Demirel, Mark Bohn, Charles Benham, James Siebarth, Mark Ibsen
  • Method and apparatus for regenerating an iron-based Fischer-Tropsch catalyst
    Publication number: 20050196332
    Abstract: Solvent extraction is used to remove wax and contaminants from an iron-based Fischer-Tropsch catalyst in a natural circulation continuous-flow system. The wax-free catalyst is then subjected to controlled oxidation to convert the iron to its initial oxidized state, Fe2O3. Reactivation of the oxide catalyst precursor is carried out by addition of synthesis gas.
    Type: Application
    Filed: December 7, 2004
    Publication date: September 8, 2005
    Inventors: Belma Demirel, Mark Bohn, Charles Benham, James Siebarth, Mark Ibsen