Patents by Inventor Apostolos A. Nikolopoulos

Apostolos A. Nikolopoulos 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 removing and recovering elemental sulfur from highly reducing gas streams containing sulfur gases
    Patent number: 6962683
    Abstract: A method is provided for removal of sulfur gases and recovery of elemental sulfur from sulfur gas containing supply streams, such as syngas or coal gas, by contacting the supply stream with a catalyst, that is either an activated carbon or an oxide based catalyst, and an oxidant, such as sulfur dioxide, in a reaction medium such as molten sulfur, to convert the sulfur gases in the supply stream to elemental sulfur, and recovering the elemental sulfur by separation from the reaction medium.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: November 8, 2005
    Assignee: Research Triangle Institute
    Inventors: Santosh K. Gangwal, Apostolos A. Nikolopoulos, Mary Anne Dorchak, Thomas P. Dorchak
  • Method of removing and recovering elemental sulfur from highly reducing gas streams containing sulfur gases
    Publication number: 20040013590
    Abstract: A method is provided for removal of sulfur gases and recovery of elemental sulfur from sulfur gas containing supply streams, such as syngas or coal gas, by contacting the supply stream with a catalyst, that is either an activated carbon or an oxide based catalyst, and an oxidant, such as sulfur dioxide, in a reaction medium such as molten sulfur, to convert the sulfur gases in the supply stream to elemental sulfur, and recovering the elemental sulfur by separation from the reaction medium.
    Type: Application
    Filed: July 15, 2002
    Publication date: January 22, 2004
    Applicant: Research Triangle Institute
    Inventors: Santosh K. Gangwal, Apostolos A. Nikolopoulos, Thomas P. Dorchak, Mary Anne Dorchak