Patents by Inventor Thomas Jarvi

Thomas Jarvi 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).

  • Fuel cell coolant bubble control
    Publication number: 20070154747
    Abstract: To mitigate bubble blockage in water passageways (78, 85), in or near reactant gas flow field plates (74, 81) of fuel cells (38), passageways are configured with (a) cross sections having intersecting polygons or other shapes, obtuse angles including triangles and trapezoids, or (b) hydrophobic surfaces (111), or (c) differing adjacent channels (127, 128), or (d) water permeable layers (93, 115, 116, 119) adjacent to water channels or hydrophobic/hydrophilic layers (114, 120), or (e) diverging channels (152).
    Type: Application
    Filed: December 13, 2006
    Publication date: July 5, 2007
    Inventors: Robert Darling, Evan Rege, Ryan Balliet, Jeremy Meyers, Craig Evans, Thomas Jarvi, Sitaram Ramaswamy
  • Fuel cell coolant bubble control
    Publication number: 20070154744
    Abstract: To mitigate bubble blockage in water passageways (78, 85), in or near reactant gas flow field plates (74, 81) of fuel cells (38), passageways are configured with (a) intersecting polygons, obtuse angles including triangles, trapezoids, or (b) hydrophobic surfaces (111), or (c) differing adjacent channels (127, 128), or (d) water permeable layers (93, 115, 116, 119) adjacent to water channels or hydrophobic/hydrophilic layers (114, 120).
    Type: Application
    Filed: December 30, 2005
    Publication date: July 5, 2007
    Inventors: Robert Darling, Evan Rege, Ryan Balliet, Jeremy Meyers, Craig Evans, Thomas Jarvi
  • Extended catalyzed layer for minimizing cross-over oxygen and consuming peroxide
    Publication number: 20050196661
    Abstract: A membrane electrode assembly includes an anode, a cathode, a membrane disposed between the anode and the cathode, and an extended catalyzed layer between the cathode and the membrane, the extended catalyzed layer being adapted to consume oxygen and decompose hydrogen peroxide to produce water.
    Type: Application
    Filed: March 4, 2004
    Publication date: September 8, 2005
    Inventors: Sergei Burlatsky, Jared Hertzberg, Ned Cipollini, Thomas Jarvi
  • Method for preparing membranes and membrane electrode assemblies with hydrogen peroxide decomposition catalyst
    Publication number: 20050095355
    Abstract: A method for making a membrane electrode assembly includes the steps of providing a membrane electrode assembly including an anode including a hydrogen oxidation catalyst; a cathode; a membrane disposed between the anode and the cathode; and depositing a peroxide decomposition catalyst in at least one position selected from the group consisting of the anode, the cathode, a layer between the anode and the membrane and a layer between the cathode and the membrane wherein the peroxide decomposition catalyst has selectivity when exposed to hydrogen peroxide toward reactions which form benign products from the hydrogen peroxide. The peroxide decomposition catalyst can also be positioned within the membrane. Also disclosed is a power-generating fuel cell system including such a membrane electrode assembly, and a process for operating such a fuel cell system.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 5, 2005
    Inventors: James Leistra, Ned Cipollini, Wayde Schmidt, Jared Hertzberg, Chi Paik, Thomas Jarvi, Timothy Patterson, Sonia Tulyani