Patents by Inventor Frederick E. Johnson

Frederick E. Johnson 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).

  • Modified polybenzimidazole (PBI) membranes for enhanced polymer electrochemical cells
    Patent number: 6987163
    Abstract: The invention relates to a modified polybenzimidazole (PBI), membranes that are fabricated from these polymers, and their use in electrochemical applications. These membranes have high ionic conductivity and are suitable for solid polymer electrolytes in electrochemical applications, especially for high temperature polymer electrolyte membrane (PEM) fuel cells.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: January 17, 2006
    Assignee: Research Foundation of the State University of New York
    Inventors: Israel Cabasso, Youxin Yuan, Frederick E. Johnson
  • Modified polybenzimidazole (PBI) membranes for enhanced polymer electrochemical cells
    Publication number: 20040028976
    Abstract: The invention relates to a modified polybenzimidazole (PBI), membranes that are fabricated from these polymers, and their use in electrochemical applications. These membranes have high ionic conductivity and are suitable for solid polymer electrolytes in electrochemical applications, especially for high temperature polymer electrolyte membrane (PEM) fuel cells.
    Type: Application
    Filed: August 7, 2002
    Publication date: February 12, 2004
    Inventors: Israel Cabasso, Youxin Yuan, Frederick E. Johnson