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A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
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| Number | Title | Issue Date |
| 8182954 | Full cells evaporative cooling and combined evaporative and sensible cooling Water passageways (67; 78, 85; 78a, 85a) that provide water through reactant gas flow field plates (74, 81) to cool the fuel cells (38) may be grooves (76, 77; 83, 84) or may comprise a plane of porous hydrophilic mat... | 05/22/2012 |
| 8142950 | Hydrogen passivation shut down system for a fuel cell power plant The invention is a hydrogen passivation shut down system for a fuel cell power plant (10, 200). During shut down of the plant (10, 200), hydrogen fuel is permitted to transfer between an anode flow path (24, 24′) and a cathode flow path (38... | 03/27/2012 |
| 8137857 | Liquid electrolyte fuel cell having an anode substrate layer thicker than the cathode substrate layer A fuel cell (8a) having a matrix (11) for containing phosphoric acid (or other liquid) electrolyte with an anode catalyst (12) on one side and a cathode catalyst (13) on the other side includes an anode substrate (16a... | 03/20/2012 |
| 8129071 | Hydrophilic layer for use in a fuel cell A device that is useful for managing moisture content within a fuel cell assembly (24) includes a hydrophilic layer (46) between a solid reactant distribution plate layer and a hydrophobic layer (38) adjacent to a catalyst layer (34). In ... | 03/06/2012 |
| 8124293 | Asymmetric dovetail interconnect for solid oxide fuel cell An interconnect for a solid oxide fuel cell includes a conductive structure having first portions defining a first contact zone, second portions defining a second contact zone which is spaced from the first contact zone, and intermediate portions extending between t... | 02/28/2012 |
| 8124290 | Operating fuel cell during down time on cryogenic hydrogen boil-off A fuel cell power plant (9) includes a stack (10) of fuel cells, each including anodes (11), cathodes (12), coolant channels (13) and either (a) a coolant accumulator (60) and a pump (61) or (b) a condenser and cooler... | 02/28/2012 |
| 8124287 | Controlling an amount of liquid within a fuel cell A method of controlling an amount of liquid in a fuel cell includes increasing the oxygen utilization within the fuel cell to increase heat. The heat reduces the amount of liquid in the fuel cell. A disclosed example method includes decreasing a supply of air to the... | 02/28/2012 |
| 8084161 | Combined accumulator and demineralizer functionality for a fuel cell A fuel cell power plant assembly includes an accumulator having a housing. In one example, at least one demineralizer portion is positioned to interact with fluid within the accumulator housing. This allows for warm fluid within the accumulator housing to provide he... | 12/27/2011 |
| 8076039 | Small volume, fuel cell inlet fuel gas distributor having low pressure drop In a fuel cell stack, an inlet fuel distributor (15, 31, 31a, 31b) comprises a plurality of fuel distributing passageways (17-23, 40-47, 64) of substantially equal length and equal flow cross section to uniformly dist... | 12/13/2011 |
| 8076037 | Hydrogen sensor cell for detecting contaminants A fuel cell stack includes at least one fuel cell having a fuel inlet for directing a hydrogen fuel to the fuel cell to generate electric current; a sensor cell having an anode, a cathode and a membrane between the anode and the cathode, the anode being communicated... | 12/13/2011 |
| 8062801 | Avoiding coolant slump into reactant fields during PEM fuel cell shutdown A fuel cell power plant (100) having a stack of fuel cells (102), each having an anode (104), a fuel reactant gas flow field plate (118), a cathode (106), an oxidant reactant gas flow field plate (120), and an electrolyte ( | 11/22/2011 |
| 8053138 | Stabilized fuel cell flow field A fuel cell (10) includes a cathode catalyst (26) for receiving a first reactant and an anode catalyst (24) for receiving an expected amount of a second reactant. The cathode catalyst (26) and the anode catalyst (24) respectively c... | 11/08/2011 |
| 7976997 | Robust heating of fuel cells during subfreezing start The electrical output connections (155, 158) of a fuel cell stack (151) are short circuited (200; 211, 212) during start up from freezing temperatures. Before the stack is short circuited, fuel is provided in excess of stoichiometric amount for ... | 07/12/2011 |
| 7972740 | Fuel cell coolant bubble control 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 incl... | 07/05/2011 |
| 7955746 | Storage of fuel cell energy during startup and shutdown or other power transitions During fuel cell startup and shutdown or other power reduction transitions of a fuel cell power plant, the excess electric energy generated by consumption of reactants is extracted by a storage control (200) in response to a controller (185) as current... | 06/07/2011 |
| 7931996 | Fuel cell with randomly-dispersed carbon fibers in a backing layer A fuel cell (40) includes first and second catalysts (12′), (14′) secured to opposed surfaces of an electrolyte (16′); a first flow field (26′) secured in fluid communication with the first catalyst (12′) defining ... | 04/26/2011 |
| 7875397 | Permeable inlet fuel gas distributor for fuel cells An inlet fuel distributor (10-10d) has a permeable baffle (39, 54, 54a, 60) between a fuel supply pipe (11, 83) and a fuel inlet manifold (12, 53, 53a, 63) causing fuel to be uniformly distributed... | 01/25/2011 |
| 7871957 | Catalyst support of mixed cerium zirconium titanium oxide, including use and method of making A durable catalyst support/catalyst is capable of extended water gas shift operation under conditions of high temperature, pressure, and sulfur levels. The support is a homogeneous, nanocrystalline, mixed metal oxide of at least three metals, the first being cerium,... | 01/18/2011 |
| 7871732 | Single reactant gas flow field plate PEM fuel cell A fuel cell stack (32) includes a plurality of fuel cells in which each fuel cell is formed between a pair of conductive, porous, substantially hydrophilic plates (17) having oxidant reactant gas flow field channels (12-15) on a first sur... | 01/18/2011 |
| 7855020 | Hydrogen passivation shut down system for a fuel cell power plant The invention is a hydrogen passivation shut down system for a fuel cell power plant (10). An anode flow path (24) is in fluid communication with an anode catalyst (14) for directing hydrogen fuel to flow adjacent to the anode catalyst (14 | 12/21/2010 |
| RE41821 | Control of multiple power plants at a site to provide a distributed resource in a utility grid A site management system (11) is provided for a power system (8) at site in a utility distribution grid (10). The power system (8) includes multiple fuel cell power plants, e.g., fuel cells, (18) and one or more loads (14),... | 10/12/2010 |
| 7807302 | Preventing fuel starvation of a fuel cell stack The direction of flow of purged fuel reactant gas (20) is sensed (38, 39, 44, 53, 54) to ensure it flows outwardly from a fuel cell stack (9) towards the ambient (21). If the purged fuel reactant. gas is not flowing outwardly, a signal ( | 10/05/2010 |
| 7799476 | 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... | 09/21/2010 |
| 7790303 | Storage of fuel cell energy during startup and shutdown or other power transitions During fuel cell startup and shutdown or other power reduction transitions of a fuel cell power plant, the excess electric energy generated by consumption of reactants is extracted by a storage control (200) in response to a controller (185) as current... | 09/07/2010 |
| 7771663 | Catalytic combustors keeping contained medium warm in response to hydrostatic valve Water in a fuel cell accumulator is kept above freezing by a hydrogen/oxygen catalytic combustor fed hydrogen through a mechanical thermostatic valve in thermal communication with the container and connected to a hydrogen supply. The system includes an ejector hydro... | 08/10/2010 |
| 7763390 | Fuel cell assembly having long life characteristics An example fuel cell assembly includes a separator plate. Non-porous and hydrophobic flow field layers are associated with the separator plate. An electrolyte retaining matrix comprises silicon carbide powder and has a mean particle size of about 3 microns and a thi... | 07/27/2010 |
| 7732073 | Fuel cell minimum fuel recycle with maximum fuel utilization Recycle fuel gas is provided (36) to an impeller (34, 34a) for application to the input (24) of the anode flow fields of a fuel cell stack (25). The impeller may be an ejector (34) having its primary input (33) connec... | 06/08/2010 |
| 7713648 | Fuel cell cover plate tie-down A pair of reactant cover plates, e.g., fluid manifolds or protective covers (11, 12), on opposite sides of a fuel cell stack (7) are drawn to the fuel cells (14) and pressure plates (8) by tensioning lines, e.g., cables (23) or str... | 05/11/2010 |
| 7678478 | Fuel cell assembly having long life characteristics A fuel cell assembly (20) has a plurality of characteristics that extend the useful life of the assembly. In one example, flow field layers are non-porous and hydrophobic such that they have an acid absorption rate of less than about 0.10 mg/khr-cm2 | 03/16/2010 |
| 7655183 | Durable pd-based alloy and hydrogen generation membrane thereof A durable Pd-based alloy is used for a H2-selective membrane in a hydrogen generator, as in the fuel processor of a fuel cell plant. The Pd-based alloy includes Cu as a binary element, and further includes “X”, where “X” comprises at least one met... | 02/02/2010 |
| 7645531 | Retaining water in a fuel cell stack for cooling and humidification during frozen startup A fuel cell power plant (19, 19a) has a plurality of fuel cells (70, 70a, 70c) arranged in a stack (20, 20c), each fuel cell having porous, at least partially hydrophilic water transport plates (75, 81) ... | 01/12/2010 |
| 7617062 | DC current calculation for fuel cell control A process for determining the DC current in a fuel cell power plant includes the steps of determining current value from a power electronics converter of a power conditioning system of the power plant; determining a correction factor based upon losses within the con... | 11/10/2009 |
| 7612011 | Ceria-based mixed-metal oxide structure, including method of making and use A homogeneous ceria-based mixed-metal oxide, useful as a catalyst support, a co-catalyst and/or a getter has a relatively large surface area per weight, typically exceeding 150 m2/g, a structure of nanocrystallites having diameters of less than 4 nm, and ... | 11/03/2009 |
| 7579100 | Fuel stack assembly A fuel cell stack assembly includes a plurality of substantially uniform fuel cell components arranged in a stack and including end components; and pressure/end plate current collectors positioned adjacent to the end components. ... | 08/25/2009 |
| 7579098 | Fuel cells evaporative reactant gas cooling and operational freeze prevention Fuel cells (38) have water passageways (67; 78, 85; 78a, 85a) that provide water through reactant gas flow field plates (74, 81) to cool the fuel cell. The water passageways may be vented to atmosphere (99), by a poro... | 08/25/2009 |
| 7575610 | Compact production of reformate and segregated H, Nand CO Substantially pure oxygen is provided to an up flow reformer (49a) from a separator (108) downwardly impelled water droplets (53) mix with the outflow (58) of a CPO (59), flowing upwardly through high temperature (68) and lo... | 08/18/2009 |
| D596594 | Panel | 07/21/2009 |
| 7556874 | Fuel cell temperature control by evaporative cooling To evaporatively cool fuel cells, the pressure in steam carrying channels on one side of a hydrophobic porous liquid/vapor barrier layer disposed between adjacent fuel cells is reduced to below the vapor pressure of liquid water passing through liquid water carrying... | 07/07/2009 |
| 7527886 | Start up of cascaded fuel cell stack A cascaded fuel cell stack (9a) includes a plurality of groups (10-12) of fuel cells (13) connected electrically in series by means of conductive separator plates (58, 59) and current collecting pressure plates (56, 57 | 05/05/2009 |
| 7507494 | Extended catalyzed layer for minimizing cross-over oxygen and consuming peroxide 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 hydrog... | 03/24/2009 |
