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| Number | Title | Issue Date |
| 7879472 | Micro fuel cell A fuel cell, fuel cell array and methods of forming the same are disclosed. The fuel cell can be made by forming a first aperture defined by a first aperture surface through a first electrode layer and forming a second aperture defined by a second aperture surface t... | 02/01/2011 |
| 7670699 | Fuel cell A simple, inexpensive and highly efficient fuel cell has boundary structures made of a photo-sensitive material in combination with selective patterning. Printed circuit board (PCB) fabrication techniques combine boundary structures with two and three dimensional el... | 03/02/2010 |
| 7629065 | Fuel cell system with a first and second electrically conductive casing In a fuel cell system, an electrically conductive first case unit and an electrically conductive second case unit are fixed by screws such that insulating members are interposed between the first case unit and the second case unit. A load applying mechanism is provi... | 12/08/2009 |
| 7393603 | Methods for fuel cell system optimization A method of operating a fuel cell system which includes operating a fuel cell system at one or more operational modes, wherein said fuel cell system is configured to operate at a plurality of operational modes comprising: maximum power output, maximum system efficie... | 07/01/2008 |
| 7358001 | Process for operating a regenerative fuel cell In the regenerative fuel cell, a positive chamber is separated from a negative chamber by a cation exchange membrane. The positive chamber comprises a positive electrode and a bromine-containing electrolyte. The negative chamber comprises a negative electrode and a ... | 04/15/2008 |
| 7341800 | Fuel cell A simple, inexpensive and highly efficient fuel cell has boundary structures made of a photo-sensitive material in combination with selective patterning. Printed circuit board (PCB) fabrication techniques combine boundary structures with two and three dimensional el... | 03/11/2008 |
| 7326480 | Fuel cell power system and method of controlling a fuel cell power system A fuel cell power system includes a fuel cell which has an optimal voltage; an energy storage device having a nominal voltage substantially similar to the optimal voltage of the fuel cell; and an electrical switch that, in operation, selectively electrically couples... | 02/05/2008 |
| 7320838 | Electrolyte creepage barrier for liquid electrolyte fuel cells A dielectric assembly for electrically insulating a manifold or other component from a liquid electrolyte fuel cell stack wherein the dielectric assembly includes a substantially impermeable dielectric member over which electrolyte is able to flow and a barrier adja... | 01/22/2008 |
| 7306871 | Hybrid power generating system combining a fuel cell and a gas turbine A system for co-generation of electricity combining a hydrocarbon catalytic reformer, an SOFC assembly and a generator driven by a gas turbine. The fuel cell assembly recycles a high percentage of anode exhaust gas into the reformer. Oxygen for reforming is derived ... | 12/11/2007 |
| 7291410 | Orientation independent liquid fuel reservoir A fuel reservoir for a liquid fuel cell particularly useful for portable electronic devices or for a reformer, includes (a) a container defining a volume for holding a liquid fuel; (b) a wicking structure positioned within the volume and into which at least one port... | 11/06/2007 |
| 7279016 | Fuel cell bipolar separator plate and current collector assembly and method of manufacture A fuel cell bipolar separator plate of variable length is formed from a sheet having a fixed width. The sheet is passed through a tool a predetermined distance and a pattern of ribs is formed on a central portion of the sheet with the tool to define a segment along ... | 10/09/2007 |
| 7276304 | Fuel cell system including a unit for electrical isolation of a fuel cell stack from a manifold assembly and method therefor A fuel cell system with improved electrical isolation having a fuel cell stack with a positive potential end and a negative potential, a manifold for use in coupling gases to and from a face of the fuel cell stack, an electrical isolating assembly for electrically i... | 10/02/2007 |
| 7258943 | Fuel cell A fuel cell of the invention has unified a processing circuit processing a cell voltage output signal of a fuel cell stack and a connector connecting an circuit unit with terminals provided extending from separators of the fuel cell, thereby having abolished connect... | 08/21/2007 |
| 7252898 | Fuel cells comprising laminar flow induced dynamic conducting interfaces, electronic devices comprising such cells, and methods employing same A fuel cell is described that includes (a) a first electrode; (b) a second electrode; and (c) a channel contiguous with at least a portion of the first and the second electrodes. When a first liquid is contacted with the first electrode, a second liquid is contacted... | 08/07/2007 |
| 7217303 | Pressure swing reforming for fuel cell systems The present invention provides an improvement in the process of producing hydrogen from hydrocarbon-containing streams. A cyclic reforming process, referred to as pressure swing reforming, provides an efficient means for producing a hydrogen containing synthesis gas... | 05/15/2007 |
| 7214442 | High specific power, direct methanol fuel cell stack The present invention is a fuel cell stack including at least one direct methanol fuel cell. A cathode manifold is used to convey ambient air to each fuel cell, and an anode manifold is used to convey liquid methanol fuel to each fuel cell. Tie-bolt penetrations and... | 05/08/2007 |
| 7166985 | Fuel cell power system having a plurality of rack fuel cell power modules A fuel cell power module is provided. The module comprises (a) power production unit, (b) a power conditioning and protection unit, and (c) a control unit, each unit being modules and integrated into a module for independent removal. Multiple modules are networked s... | 01/23/2007 |
| 7166381 | Air breathing direct methanol fuel cell pack Provided is an air breathing direct methanol fuel cell pack including membrane electrode assemblies (MEAs) forming a plurality of single cells having an electrolyte membrane, a plurality of anodes on a first plane of the electrolyte membrane and a plurality of catho... | 01/23/2007 |
| 7157164 | Fuel cell system and control method of the same A fuel cell system in which fuel gas and oxidizing gas are supplied to a fuel cell stack and power generation is performed by electrochemical reaction between the fuel gas and the oxidizing gas, and a control method thereof are provided. This fuel cell system includ... | 01/02/2007 |
| 7128994 | Polyelectrolyte type fuel cell and separator for polyelectrolyte type fuel cell In a polymer electrolyte fuel cell wherein a plurality of unit cells are arranged in a flat manner oriented in the same direction, and the prescribed adjacent unit cells are electrically connected in series so as to connect the plurality of unit cells in series, a f... | 10/31/2006 |
| 7117732 | Fuel gauge for fuel cartridges Fuel gauges for fuel supplies for fuel cells are disclosed. Each fuel gauge has a property that is readable by an electrical circuit. These properties are related to the remaining fuel in the fuel supplies. These properties include, but are not limited to, electrica... | 10/10/2006 |
| 7108937 | Reducing PEM fuel cell hard freeze cycles The reactant gas manifolds (12–15) of a PEM fuel cell are modified to provide insulated manifolds (14a) having inner and outer walls (30, 31) closed off by a peripheral wall (35) to provide a chamber (36) which may be fill... | 09/19/2006 |
| 7056608 | Current collector for use in a fuel cell A current collector for use in a fuel cell is described and wherein the fuel cell includes an ion exchange membrane having opposite anode and cathode sides, and a current collector is disposed in ohmic electrical contact with each of the anode and cathode sides, and... | 06/06/2006 |
| 6994932 | Liquid fuel reservoir for fuel cells The present invention concerns a fuel reservoir for a liquid fuel cell particularly useful for portable electronic devices in which the fuel reservoir can deliver the liquid fuel regardless of the orientation. The fuel reservoir comprises (a) a container defining a ... | 02/07/2006 |
| 6992460 | Fuel cell network power system A fuel cell power module is provided. The module comprises (a) power production unit, (b) a power conditioning and protection unit, and (c) a control unit, each unit being modules and integrated into a module for independent removal. Multiple modules are networked s... | 01/31/2006 |
| 6977002 | Fuel reforming apparatus and the method of starting it A reforming catalyst is composed of a plurality of catalyst layers arranged in series, and when started from a low temperature, preheated air is supplied in parallel to a point upstream of each catalyst layer, thereby the catalyst in each layer is self-heated simult... | 12/20/2005 |
| 6964825 | Compliant manifold gasket A fuel cell gasket assembly for use in conjunction with a fuel cell stack by placing the gasket assembly between the periphery of a face of the stack and a manifold. The periphery of the stack face includes periphery portions that expand differently during operation... | 11/15/2005 |
| 6942105 | In-line filtration for a particle-based electrochemical power system A system for filtering particles within a multiphase fluid that comprises a particulate phase is disclosed. The system comprises a first plurality of substantially parallel, substantially planar thin slabs separated by a predetermined distance to retain particles ha... | 09/13/2005 |
| 6913845 | Reducing fuel cell cathode potential during startup and shutdown Each cell of a fuel cell stack is provided, between the anode 37 and cathodes 38, with either (a) a permanent shunt (20) which may be a discrete resistor (42-44), a diode (95), a strip of compliant carbon cloth (65), or a sm... | 07/05/2005 |
| 6911274 | Fuel cell system A fuel cell system is described which comprises a power source and a fuel storage unit. A flowable fuel is contained with the fuel storage unit. A first flow path delivers fuel from the fuel storage unit to the power source. Some or all of this fuel is deposited int... | 06/28/2005 |
| 6890490 | Hydrogen absorbing tank apparatus A gas compressor and a bypass that bypasses the gas compressor are provided between a hydrogen absorbing tank and a hydrogen gas consumer device such as, for example, a fuel cell. When the hydrogen gas generating pressure is low during an initial period of the hydro... | 05/10/2005 |
| 6858337 | Reversible fuel cell power plant The invention is a reversible fuel cell power plant (10). A reactant switch-over assembly (48) is secured between a reducing fluid fuel source (30), an oxygen containing oxidant source (24), and first and second flow fields (20) ( | 02/22/2005 |
| 6828053 | In-situ resistive current and temperature distribution circuit for a fuel cell A sensor plate for measuring current and/or temperature distribution of an operating fuel cell. The sensor plate has a circuit board interposed between an anode flow field plate and a cathode flow field plate of the fuel cell. A flow field plate is segmented into a ... | 12/07/2004 |
| 6783883 | Gas-proof assembly composed of a bipolar plate and a membrane-electrode unit of polymer electrolyte membrane fuel cells According to known methods, gas chambers of fuel cells are sealed by applying pressure. A small space always remains between the electrode and the membrane. According to the inventive sealing method, the bipolar plate and the membrane-electrode unit are bonded with ... | 08/31/2004 |
| 6656621 | Fuel cell stack A fuel cell stack comprises a power-generating cell and a cooling cell which are stacked, an insulating means for electrically insulating the cooling medium supplied into the cooling cell from the power-generating cell, and a conducting means for electric... | 12/02/2003 |
| 6653003 | Fuel cell support and electrical interconnector Flat plate fuel cells, particularly air-depolarized cells, are stacked and electrically interconnected into a battery structure with a connector block and tray. The anode and cathode elements of each cell are provided with extending terminal conductor ele... | 11/25/2003 |
| 6613470 | Solid polymer electrolyte fuel cell stack A fuel gas inlet, a fuel gas outlet, an oxygen-containing gas inlet, an oxygen-containing gas outlet, and other components, which are disposed at upper and lower portions at both ends in the lateral direction, are provided in a first fuel cell stack. A pl... | 09/02/2003 |
| 6569549 | Method for increasing the operational efficiency of a fuel cell power plant A method is proposed for increasing the operational efficiency of a fuel cell power plant including a cell stack assembly comprised of a plurality of fuel cells in electrical communication with one another. The cell stack assembly includes a fuel inlet ma... | 05/27/2003 |
| 6541147 | Printed circuit board separator for an electrochemical fuel cell A proton exchange membrane (PEM)-type fuel cell is formed from layered undulate MEA structures and separator plates alternating with each other in the stack dimension so that each layered MEA structure is disposed between and attached to an associated pai... | 04/01/2003 |
| 6517962 | Fuel cell anode structures for voltage reversal tolerance In a solid polymer fuel cell series, various circumstances can result in a fuel cell being driven into voltage reversal by other cells in the series stack. For instance, cell voltage reversal can occur if that cell receives an inadequate supply of fuel (f... | 02/11/2003 |
