(WO9409519-A1)      The fuel cell includes a membrane electrode assembly interposed between two separator layers. The separator layers are formed of thin electrically conductive sheet material which is impermeable to the fuel and oxidant reactant streams. The membrane electrode assembly comprises two electrode layers formed of porous electrically conductive sheet material. The electrode layers have a catalyst associated with it and an ion exchange membrane interposed between the electrode layers.    The electrode layers include passages, such as the interstitial spaces within the electrode material or grooves formed in the surface of the electrode material, for flowing a reactant stream between an inlet and outlet within the electrode layer. The incorporation of the reactant flow passages within the electrode material permits the use of thin, lightweight separator layers, thus providing higher power-to-volume and power-to-weight ratios than conventional fuel cells having reactant flow passages engraved, milled or moulded in the separator plates.    USE -   Electrochemical fuel cell for converting fuel reactant and oxidant streams to reaction product stream and electrical energy.    (JP8507402-W)      The fuel cell includes a membrane electrode assembly interposed between two separator layers. The separator layers are formed of thin electrically conductive sheet material which is impermeable to the fuel and oxidant reactant streams. The membrane electrode assembly comprises two electrode layers formed of porous electrically conductive sheet material. The electrode layers have a catalyst associated with it and an ion exchange membrane interposed between the electrode layers.    The electrode layers include passages, such as the interstitial spaces within the electrode material or grooves formed in the surface of the electrode material, for flowing a reactant stream between an inlet and outlet within the electrode layer. The incorporation of the reactant flow passages within the electrode material permits the use of thin, lightweight separator layers, thus providing higher power-to-volume and power-to-weight ratios than conventional fuel cells having reactant flow passages engraved, milled or moulded in the separator plates.    USE -   Electrochemical fuel cell for converting fuel reactant and oxidant streams to reaction product stream and electrical energy.    (JP3110760-B2)      The fuel cell includes a membrane electrode assembly interposed between two separator layers. The separator layers are formed of thin electrically conductive sheet material which is impermeable to the fuel and oxidant reactant streams. The membrane electrode assembly comprises two electrode layers formed of porous electrically conductive sheet material. The electrode layers have a catalyst associated with it and an ion exchange membrane interposed between the electrode layers.    The electrode layers include passages, such as the interstitial spaces within the electrode material or grooves formed in the surface of the electrode material, for flowing a reactant stream between an inlet and outlet within the electrode layer. The incorporation of the reactant flow passages within the electrode material permits the use of thin, lightweight separator layers, thus providing higher power-to-volume and power-to-weight ratios than conventional fuel cells having reactant flow passages engraved, milled or moulded in the separator plates.    USE -   Electrochemical fuel cell for converting fuel reactant and oxidant streams to reaction product stream and electrical energy.