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| Number | Title | Issue Date |
| 8153288 | Fuel cell and fuel cell stack A fuel cell is formed by stacking a membrane electrode assembly and separators alternately. Each of the separators includes first and second metal plates. A coolant flow field is formed between the first metal plate of the fuel cell and the second metal plate of the... | 04/10/2012 |
| 8048550 | Fluoroelastomer gasket compositions A gasket elastomer precursor of admixed fluoroelastomer particulate, curing agent, and metallic oxide reduction-agent optionally admixed with any of microspheres, inert particulate, PTFE particles. In one embodiment, the composition is applied to a substrate and cur... | 11/01/2011 |
| 7799454 | Method and device for stacking fuel cells A fuel cell stack is disclosed having a number of stacked fuel cells, each having in series an anode-facing end plate, an anode, an ion-exchanging layer, a cathode and a cathode-facing end plate. The stack includes at least one conductive and flexible intermediate l... | 09/21/2010 |
| RE41695 | Fuel cell system In a fuel cell system, leakage of a fuel and a by-product produced in oxidizing a fuel, and leakage thereof out of a fuel cell by evaporation are prevented. For this purpose, in a fuel cell system comprising an electrogenerating portion having a fuel electrode, an o... | 09/14/2010 |
| RE41577 | High power density fuel cell stack using micro structured components The invention is a multiple fuel cell layer structure with numerous fuel cell layers, each fuel cell has an anode, a cathode, a positive end and a negative end, wherein a first fuel cell layer is stacked on top of a second fuel cell layer such that the anode side of... | 08/24/2010 |
| 7776464 | Solid polymer electrolyte fuel cell and electrode structure for the fuel cell A solid polymer electrolyte fuel cell (2) is formed from an electrode structure (7) and first and second separators (8, 9). The electrode structure (7) has a solid polymer electrolyte membrane (10), first and second electrode layer... | 08/17/2010 |
| 7736787 | Ceramic membranes with integral seals and support, and electrochemical cells and electrochemical cell stacks including the same Ceramic membranes with integral seals and support, and related electrochemical cells and cell stacks. The membrane comprises a thin electrolyte layer supported on a porous electrode layer which in turn is supported on a thick ceramic support layer, preferably a cera... | 06/15/2010 |
| 7718299 | Fuel cell bipolar plate and fuel cell with improved fluid distribution employing such plates A bipolar plate for a fuel cell including a first through-hole positioned within one of its peripheral edges for circulating a reactive fluid, an anode compartment extending at one of its two main faces, and a cathode compartment extending at the opposite main face.... | 05/18/2010 |
| 7709131 | Fuel cell endplate comprising current collector plate and fuel cell incorporating same A fuel cell endplate to be combined with a membrane/electrode assembly comprising a high-polymer electrolytic membrane and electrodes sandwiching the membrane; which comprises a resin substrate, a collector plate and a gasket; the collector plate being in contact wi... | 05/04/2010 |
| 7704625 | Fuel cell Flow guides forming an inlet channel are formed on a surface of a metal separator of a fuel cell. The flow guides overlap a section of an outer seal provided on the other surface of the metal separator. When a load is applied to the flow guides and the overlapping s... | 04/27/2010 |
| 7687180 | Overmolded support plate for fuel cell A fuel cell component is provided including a support plate, a membrane electrode assembly, and a resilient member. The support plate defines a bore extending between a first surface and a second surface. The membrane electrode assembly engages the second surface of... | 03/30/2010 |
| 7678488 | Integrated and modular BSP/MEA/manifold plates for fuel cells The present invention concerns improvements in fuel cell fabrication. It concerns an improved, integrated and modular BSP/MEA/Manifolds, which facilitates single cell (module) leak and performance testing prior to assembly in a fuel cell stack as well as facilitatin... | 03/16/2010 |
| 7670709 | Fuel cell seal with integral bridge The invention is drawn to a gasket (34) for use in an individual fuel cell (20). The gasket (34) includes at lest one generally rigid bridge (44) or (46) that extends across the fluid flow channels in adjacent separator plates (... | 03/02/2010 |
| 7662503 | Fuel cell, disassembly method thereof, and separators used therein A disassembly procedure of a fuel cell places a sloped edge of a cracking tool on a bottom of a recess. The bottom of the recess as a point of application, an opening edge of the recess where a flat side of the cracking tool is placed, is a point of support, and for... | 02/16/2010 |
| 7655339 | Molded fuel cell plates with seals A fuel cell unit incorporates a pair of plates; one plate an anode, the other a cathode. Respective anode and cathode plates are physically bonded together to form such pairs; wherein pluralities of the pairs are secured together to form commercially available fuel ... | 02/02/2010 |
| 7632593 | Bipolar plate supported solid oxide fuel cell with a sealed anode compartment A bipolar plate supported solid oxide fuel cell with a sealed anode compartment is provided. The solid oxide fuel cell includes a cathode, an electrolyte, and an anode, which are supported on a metallic bipolar plate assembly including gas flow fields and the gas im... | 12/15/2009 |
| 7615306 | Membrane electrode assembly for a fuel cell A membrane electrode assembly (MEA) for a fuel cell, which has a planar polymer membrane. This membrane, in a tangentially inner area, is coated on both sides with electrode structure, and, in a tangentially outer area projecting at least on one side beyond the elec... | 11/10/2009 |
| 7608355 | Seal structure of a fuel cell A seal structure of a fuel cell includes an interrupted back-up disposed at least one of a connecting gas passage and a connecting coolant passage. The back-up located on one side of a separator and a portion of a seal line located on the other side of the separator... | 10/27/2009 |
| 7592088 | Seal configuration for fuel cell stack A seal configuration is provided for a fuel cell stack, including a first bipolar plate and a second bipolar plate, each disposed on opposite sides of a membrane electrode assembly. The seal configuration includes a first sub-gasket adhered to a recess region of the... | 09/22/2009 |
| 7588854 | Fuel cell system having no fuel pump A fuel cell system having no fuel pump, including: an electric generator to generate electricity by electrochemical reaction between hydrogen-containing fuel and an oxidant; and a fuel feeder including a fuel tank in which the hydrogen-containing fuel to be supplied... | 09/15/2009 |
| 7582378 | Fuel cell seal and plate features In one aspect, a fuel cell assembly comprises a separator plate having a surface with a surface feature; and a seal comprising a resilient member defining a bead and a cooperating feature for engagement with the surface feature of the plate. The surface feature of t... | 09/01/2009 |
| 7579101 | Direct liquid feed fuel cell stack A direct liquid feed fuel cell stack that includes Membrane Electrode Assemblies (MEAs) and bipolar plates. Each MEA includes an electrolyte membrane, an anode and a cathode, and the MEA is interposed between stacked bipolar plates. Each bipolar plate includes a gro... | 08/25/2009 |
| 7572539 | Polymer electrolyte fuel cell A polymer electrolyte fuel cell has an MEA-gasket assembly including an MEA having a polymer electrolyte membrane, a pair of catalyst layers, and a pair of gas diffusion electrodes, and a pair of gaskets provided on peripheral portions of surfaces on both sides of t... | 08/11/2009 |
| 7572538 | Fuel cell A fuel cell includes a membrane electrode assembly and first and second metal separators for sandwiching the membrane electrode assembly. In the membrane electrode assembly, a surface area of a gas diffusion layer is larger than a surface area of a gas diffusion lay... | 08/11/2009 |
| 7569298 | Separator seal structure for a fuel cell A seal structure of a fuel cell includes a first seal surface formed in a first separator disposed on one side of an electrolyte membrane and a second seal surface formed in a second separator disposed on the other side of the electrolyte membrane, and a sealant col... | 08/04/2009 |
| 7569299 | Multi-component fuel cell gasket for low temperature sealing and minimal membrane contamination A gasket for a fuel cell, wherein the gasket includes the use of two or more different materials as the gasket. For example, ethylene propylene diene monomer (EPDM) and/or the like, or another more chemically inert gasket material, is located inside or on an inboard... | 08/04/2009 |
| 7553576 | Separator for fuel cell A fuel cell separator is provided which has in a peripheral part (30) gas passages (31, 31) for guiding reaction gases and reaction product passages (33) for guiding a reaction product. The separator (20) is made up of a central part (... | 06/30/2009 |
| 7553577 | Sealing structure of fuel cell and process for molding rubber packing A fuel cell separator unit having a crosslinked rubber layer is fabricated by coating a rubber-containing coating agent on the periphery of the surface of a separator to form a thin, unvulcanized rubber layer, and then vulcanizing or crosslinking the thin rubber lay... | 06/30/2009 |
| 7541108 | Solid polymer fuel cell It is an object of the present invention to provide a means for integrating an MEA and a pair of separators and regulate their positions without using parts that are specifically dedicated for position regulation use. More specifically, the present invention provide... | 06/02/2009 |
| 7537855 | Unit cell structure comprising composite-gasket for fuel cell stack A composite gasket for fuel cell stack comprises two rows of beads and a support which can improve mountability and sealing property and reduce the assembly pressure by using materials having low hardness with reduced volume. This invention also relates to a structu... | 05/26/2009 |
| 7524573 | Fuel cell having inner and outer periphery seal members A fuel cell formed by arranging a plurality of unit cells, wherein each unit cell comprises a membrane electrode assembly arranged such that an electrolyte membrane is clamped between a membrane-like oxidizer electrode and a membrane-like fuel electrode as well as t... | 04/28/2009 |
| 7521144 | Membrane-electrode assembly for polymer electrolyte fuel cells, and polymer electrolyte fuel cell The present invention provides a membrane-electrode assembly for polymer electrolyte fuel cells and a polymer electrolyte fuel cell having excellent dimensional stability and mechanical strength, and having high durability at the time of a power generation. Each of ... | 04/21/2009 |
| 7507493 | Electrochemical cell having protection against creep An electrochemical cell having a membrane electrode assembly (MEA), and a gas diffusion layer (GDL) disposed proximate a side of the MEA with an edge of the GDL disposed inboard of an edge of the MEA is disclosed. A sealing member is disposed proximate the edge of t... | 03/24/2009 |
| 7491463 | Electrochemical cell bipolar plate with sealing feature A bipolar plate for an electrochemical cell having a first side with a first fluid flow region bordered by a first sealing region, and a second side with a second fluid flow region bordered by a second sealing region is disclosed. The first and second sealing region... | 02/17/2009 |
| 7488550 | Fuel cell with a seal member integrally formed on a metal separator A first seal member is provided integrally on a surface of a first metal separator. The first seal member includes a base portion provided integrally on the first metal separator, a columnar portion protruding from the base portion, and a curved edge portion provide... | 02/10/2009 |
| 7459229 | Reactant sealing for fuel cell stack The invention relates to a fuel cell stack in which, according to the invention, several elements of the fuel cell stack are advantageously sealed by a seal in order to form a continuous operating material channel. The inventive fuel cell stack can be provided with ... | 12/02/2008 |
| 7455925 | Thin-layer fuel cell structure A fuel cell layer and methods for making a fuel cell layer comprising at least one fuel cell in communication with first reactant plenum and second reactant plenum, wherein one of the reactant plenums contains oxidant and the other reactant plenum contains fuel. The... | 11/25/2008 |
| 7441560 | Solenoid valve for fuel cell A diaphragm is clamped between a solenoid unit disposed in a casing and a second valve body in which hydrogen is introduced. A filter comprising a bottomed cylindrical mesh member is mounted in a first passage defined in the first valve body. A restriction having an... | 10/28/2008 |
| 7442452 | Fuel cell system and gas leak detection method When a command for stopping electric generation by a fuel cell is issued, shutoff valves are closed (at time t1), and then a time-dependent change in pressure (P) in a closed passage area including the fuel cell is detected. A pressure change speed (dP1 | 10/28/2008 |
| 7442460 | Direct-alcohol fuel-cell stack and corresponding method of fabrication Described herein is a fuel-cell stack, which comprises a plurality of direct-alcohol fuel cells electrically connected together. Each cell has a miniaturized structure comprising a first electrode, a second electrode, an electrolyte set between the first electrode a... | 10/28/2008 |
