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| Number | Title | Issue Date |
| 7442453 | Decontamination procedure for a fuel cell power plant A decontamination procedure for a fuel cell power plant (10) includes operating the plant to produce electrical power for an operating period, and then terminating operation of the plant (10) for a decontamination period, and then, whenever optimal ele... | 10/28/2008 |
| 7282290 | Freeze tolerant fuel cell power plant with a direct contact heat exchanger A power plant (10) includes at least one fuel cell (12), a coolant loop (18) including a freeze tolerant accumulator (22) for storing and separating a water immiscible fluid and water coolant, a direct contact heat exchanger (56) f... | 10/16/2007 |
| 7282285 | Method and apparatus for the operation of a cell stack assembly during subfreezing temperatures A cell stack assembly (102) coolant system comprises a coolant exhaust conduit (110) in fluid communication with a coolant exhaust manifold (108) and a coolant pump (112). A coolant inlet conduit (120) enables transportation of the... | 10/16/2007 |
| RE39710 | System for providing assured power to a critical load A power system (8) is provided for economically supplying uninterrupted electrical power to one or more critical loads (14). One or more fuel cell power plants (18) provide one substantially continuous source of power, and a utility grid (10 | 07/03/2007 |
| 7201992 | Fuel cell with passive water balance A fuel cell includes a membrane electrode assembly (46) having a first reactant flow field (80) secured adjacent a first or second surface (48, 50) of the assembly (46) for directing flow of a first reactant adjacent the first or second s... | 04/10/2007 |
| 7195742 | Preferential oxidation reactor and process An apparatus for preferential oxidation of carbon monoxide in a reformate flow includes a reactor defining a flow path for a reformate flow; at least one catalyst bed disposed along the flow path; and a distributor for distributing oxygen from an oxygen source to th... | 03/27/2007 |
| 7179557 | Direct antifreeze cooled fuel cell power plant with passive water management The plant (60) includes at least one fuel cell (10, 62) having a wetproofed anode support (20) and a cathode support (24) for directing reactant streams adjacent catalysts (14, 16). A porous anode cooler plate (26) has its f... | 02/20/2007 |
| 7172647 | Coolant mixture separator assembly for use in a polymer electrolyte membrane (PEM) fuel cell power plant A liquid-gas separator assembly is used in separating gas bubbles from a liquid coolant. The assembly includes a cylindrical housing containing a central tube which is surrounded by an annular chamber. The annular chamber is defined by the outer surface of the centr... | 02/06/2007 |
| RE39348 | Method of using a water transport plate A water transport plate is provided with optimized physical characteristics to greatly improve fuel cell operation. In a preferred method of manufacturing, graphite powder, reinforcing fibers, cellulosic fibers, and a thermosetting resin are mixed with a liquid to f... | 10/17/2006 |
| 7118819 | Coolant mixture separator assembly for use in a polymer electrolyte membrane (PEM) fuel cell power plant A liquid-gas separator assembly is used in separating gas bubbles from a liquid coolant which liquid coolant is used in a polymer electrolyte membrane (PEM) fuel cell power plant. The assembly includes a cylindrical housing containing a central tube which is surroun... | 10/10/2006 |
| 7108929 | Fuel and air flow control in a multi-stack fuel cell power plant A fuel cell power plant includes a plurality of fuel cell stacks which are operatively associated with each other so that both the air stream and fuel stream for the stacks are shared by each of the stacks in the power plant. The air and fuel streams are fed into an... | 09/19/2006 |
| 7056609 | System and method for starting a fuel cell stack assembly at sub-freezing temperature A method for operating a fuel cell stack assembly having a plurality of fuel cells arranged in a stack to define opposed end fuel cells, wherein the plurality of fuel cells include intermediate fuel cells between the opposed end fuel cells, including feeding fuel an... | 06/06/2006 |
| 7041403 | Fixed IDC operation of fuel cell power plant A method for operating a fuel cell power plant to supply power to an internal load and an external load, includes the steps of evaluating power needs of the internal and external loads to determine a fixed IDC value sufficient to supply the needs; providing auxiliar... | 05/09/2006 |
| 6969411 | Compact light weight autothermal reformer assembly A fuel gas-steam reformer assembly, preferably an autothermal reformer assembly, for use in a fuel cell power plant, includes a catalyst bed which is formed from a cylindrical monolithic open cell foam body. The foam body is preferably formed from a high temperature... | 11/29/2005 |
| 6958195 | Steam generator for a PEM fuel cell power plant A burner assembly includes a catalyzed burner for combusting an anode exhaust stream from a polymer electrolyte membrane (PEM) fuel cell power plant. The catalysts coated onto the burner can be platinum, rhodium, or mixtures thereof. The burner includes open cells w... | 10/25/2005 |
| 6773684 | Compact fuel gas reformer assemblage A fuel gas reformer assemblage for use in a fuel cell power plant is formed from a composite plate assembly which includes spaced-apart divider plates with columns of individual gas passages. The reformer assemblage is constructed from a series of repeating sub-asse... | 08/10/2004 |
| D492650 | Fuel cell enclosure | 07/06/2004 |
| 6726836 | Method for desulfurizing gasoline or diesel fuel for use in a fuel cell power plant A fuel processing method is operable to remove substantially all of the sulfur present in an undiluted hydrocarbon fuel stock supply which is used to power a fuel cell power plant in a mobile environment, such as an automobile, bus, truck, boat, or the like; or in a... | 04/27/2004 |
