Patents by Inventor Subbarao Surumpudi

Subbarao Surumpudi 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).

  • Polymer electrolyte membranes for use in fuel cells
    Patent number: 6444343
    Abstract: A polymer electrolyte membrane composed of polystyrene sulfonic acid (PSSA) crosslinked within a poly(vinylidene fluoride) (PVDF) matrix is provided. This membrane exhibits low methanol crossover which translates to higher fuel and fuel cell efficiencies. A fuel cell comprising a PSSA-PVDF membrane is also provided. Further, methods of decreasing the fuel crossover rate, enhancing fuel cell efficiency, and enhancing electrical performance of a fuel cell are provided.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: September 3, 2002
    Assignee: University of Southern California
    Inventors: G. K. Surya Prakash, George A. Olah, Marshall C. Smart, Sekharipuram R. Narayanan, Qungie J. Wang, Subbarao Surumpudi, Gerald Halpert