Patents by Inventor S. Narayanan

S. Narayanan 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).

  • Membrane-electrode assemblies for direct methanol fuel cells
    Publication number: 20070072055
    Abstract: A catalyst ink for use in a fuel cell includes water, particles of a fluorocarbon polymer with a particle size of about 1 to about 12 microns, and a catalytic material. The ink may be applied to a substrate to form an electrode, or bonded with other electrode layers to form a membrane electrode assembly (MEA).
    Type: Application
    Filed: November 16, 2006
    Publication date: March 29, 2007
    Inventors: S. Narayanan, Thomas Valdez
  • Process and apparatus for the production of olefins from both heavy and light hydrocarbons
    Patent number: 4906442
    Abstract: The invention is a pyrolysis furnace for cracking heavy oils to olefins. The furnace includes a convection zone and a radiation zone. In parallel streams, the heavy stream and a stream diluent are heated in the convection zone to the point of partial thermal cracking while in the other stream a lighter oil and steam are cracked to produce olefins. The hot, olefinic light stream is then mixed with the heated heavy stream and further cracked in the radiation zone.
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: March 6, 1990
    Assignee: Stone & Webster Engineering Corporation
    Inventors: Axel R. Johnson, S. Narayanan, Herman N. Woebcke
  • Process for the production of aromatics benzene, toluene, xylene (BTX) from heavy hydrocarbons
    Patent number: 4765883
    Abstract: A process for producing improved yields of aromatics (benzene, toluene, xylene) by initially partially thermally cracking heavy hydrocarbon and thermally cracking ethane to high conversion and then completely cracking the partially cracked heavy hydrocarbon with the completely cracked ethane.
    Type: Grant
    Filed: October 20, 1982
    Date of Patent: August 23, 1988
    Assignee: Stone & Webster Engineering Corporation
    Inventors: Axel R. Johnson, S. Narayanan, Herman H. Woebcke