Patents by Inventor William R Slee

William R Slee 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).

  • System for the humidification of polymer electrolyte membrane fuel cells
    Patent number: 6808835
    Abstract: A system for the humidification of polymer electrolyte membrane fuel cells, the system comprising a first layer and a second layer; wherein the first layer comprises a porous material (11) substantially coincident with a first surface of a polymer electrolyte membrane fuel cell (10); wherein the second layer comprises a non-absorbent material (12) substantially coincident with the first layer; and wherein perforations in the second layer allow air to flow through the first and second layers to a cathode (17) of the polymer electrolyte fuel cell.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: October 26, 2004
    Assignee: Qinetiq Limited
    Inventors: Kevin J Green, Michael J Freeman, William R Slee
  • System for the humidification of polymer electrolyte membrane fuel cells
    Publication number: 20040028974
    Abstract: A system for the humidification of polymer electrolyte membrane fuel cells, the system comprising a first layer and a second layer; wherein the first layer comprises a porous material (11) substantially coincident with a first surface of a polymer electrolyte membrane fuel cell (10); wherein the second layer comprises a non-absorbent material (12) substantially coincident with the first layer; and wherein perforations in the second layer allow air to flow through the first and second layers to a cathode (17) of the polymer electrolyte fuel cell.
    Type: Application
    Filed: May 12, 2003
    Publication date: February 12, 2004
    Inventors: Kevin J Green, Michael J Freeman, William R Slee