(DE19941724-A1)   NOVELTY - Solid oxide fuel cell (SOFC) operation, comprises excess hydrocarbon fuel supply combined with minimized oxygen supply to achieve almost identical inlet and outlet temperatures.    USE - For operating an SOFC fuel cell to produce current and a H2- and CO-enriched off-gas for supply to a further fuel cell or for other purposes, e.g. a downstream gas or steam turbine process.    ADVANTAGE - The process allows almost isothermal operation of the fuel cell by use of excess fuel supply together with minimized oxygen supply, so that the heat absorption of the endothermic reaction is more closely matched with the heat production by the exothermic reaction and additional cooling is not required.    (EP1121724-A2)   NOVELTY - Solid oxide fuel cell (SOFC) operation, comprises excess hydrocarbon fuel supply combined with minimized oxygen supply to achieve almost identical inlet and outlet temperatures.    USE - For operating an SOFC fuel cell to produce current and a H2- and CO-enriched off-gas for supply to a further fuel cell or for other purposes, e.g. a downstream gas or steam turbine process.    ADVANTAGE - The process allows almost isothermal operation of the fuel cell by use of excess fuel supply together with minimized oxygen supply, so that the heat absorption of the endothermic reaction is more closely matched with the heat production by the exothermic reaction and additional cooling is not required.    (US2001010873-A1)   NOVELTY - Solid oxide fuel cell (SOFC) operation, comprises excess hydrocarbon fuel supply combined with minimized oxygen supply to achieve almost identical inlet and outlet temperatures.    USE - For operating an SOFC fuel cell to produce current and a H2- and CO-enriched off-gas for supply to a further fuel cell or for other purposes, e.g. a downstream gas or steam turbine process.    ADVANTAGE - The process allows almost isothermal operation of the fuel cell by use of excess fuel supply together with minimized oxygen supply, so that the heat absorption of the endothermic reaction is more closely matched with the heat production by the exothermic reaction and additional cooling is not required.