DE19701560-A1 -- DE4318818-A1   DAIMLER-BENZ AG (DAIM)   FLECK W;  DE2631132-C   UNITED TECHNOLOGIES CORP (UNAC)   GREVSTAD P E,  GELTING R L;  DE3508153-C   HITACHI LTD (HITA)   KUMAGAI T,  HORIBA T,  KAMO T,  TAKEUCHI S,  HITACHIOH I,  IWAMOTO K,  KITAMI K,  TAMURA K;  EP693793-A2   DAIMLER-BENZ AG (DAIM)   FLECK W,  WIESHEU N,  BENZ U;  US4810597-A   HITACHI LTD (HITA)   KUMAGAI T,  HORIBA T,  KAMO T,  TAKEUCHI S,  HITACHIOH I,  IWAMOTO K,  KITAMI K,  TAMURA K;  US4828941-A   BASF AG (BADI)   STERZEL H J;  EP859421-A1 -- DE3508153-A   HITACHI LTD (HITA)   KUMAGAI T,  HORIBA T,  KAMO T,  TAKEUCHI S,  HITACHIOH I,  IWAMOTO K,  KITAMI K,  TAMURA K;  GB1263544-A   ;  JP04229957-A   ;  JP57019973-A   ;  JP57196479-A   ;  JP58016471-A   NISSAN MOTOR CO LTD (NSMO)   NAKAMURA M;  US5573866-A   INT FUEL CELLS CORP (ITFU)   MARICLE D L,  VAN DINE L L;  DE19701560-C2 -- DE4318818-A1   DAIMLER-BENZ AG (DAIM)   FLECK W;  DE2631132-C   UNITED TECHNOLOGIES CORP (UNAC)   GREVSTAD P E,  GELTING R L;  DE3508153-C   HITACHI LTD (HITA)   KUMAGAI T,  HORIBA T,  KAMO T,  TAKEUCHI S,  HITACHIOH I,  IWAMOTO K,  KITAMI K,  TAMURA K;  EP693793-A2   DAIMLER-BENZ AG (DAIM)   FLECK W,  WIESHEU N,  BENZ U;  US4810597-A   HITACHI LTD (HITA)   KUMAGAI T,  HORIBA T,  KAMO T,  TAKEUCHI S,  HITACHIOH I,  IWAMOTO K,  KITAMI K,  TAMURA K;  US4828941-A   BASF AG (BADI)   STERZEL H J;  US5981096-A -- DE3508153-A   HITACHI LTD (HITA)   KUMAGAI T,  HORIBA T,  KAMO T,  TAKEUCHI S,  HITACHIOH I,  IWAMOTO K,  KITAMI K,  TAMURA K;  DE4818818-A1   ;  DE2631132-C   UNITED TECHNOLOGIES CORP (UNAC)   GREVSTAD P E,  GELTING R L;  DE3508153-C   HITACHI LTD (HITA)   KUMAGAI T,  HORIBA T,  KAMO T,  TAKEUCHI S,  HITACHIOH I,  IWAMOTO K,  KITAMI K,  TAMURA K;  EP693793-A2   DAIMLER-BENZ AG (DAIM)   FLECK W,  WIESHEU N,  BENZ U;  GB1263544-A   ;  JP04229957-A   ;  JP56097972-A   ;  JP56118273-A   ;  JP56118274-A   ;  JP57019973-A   ;  JP57196479-A   ;  JP58016471-A   NISSAN MOTOR CO LTD (NSMO)   NAKAMURA M;  US4810597-A   HITACHI LTD (HITA)   KUMAGAI T,  HORIBA T,  KAMO T,  TAKEUCHI S,  HITACHIOH I,  IWAMOTO K,  KITAMI K,  TAMURA K;  US4828941-A   BASF AG (BADI)   STERZEL H J;  US5573866-A   INT FUEL CELLS CORP (ITFU)   MARICLE D L,  VAN DINE L L;  US5780179-A   HONDA MOTOR CO LTD (HOND);  WO1996012317-A1   ;  EP859421-B1 -- DE3508153-A   HITACHI LTD (HITA)   KUMAGAI T,  HORIBA T,  KAMO T,  TAKEUCHI S,  HITACHIOH I,  IWAMOTO K,  KITAMI K,  TAMURA K;  GB1263544-A   ;  JP04229957-A   ;  JP56097972-A   ;  JP56118274-A   ;  JP57019973-A   ;  JP57196479-A   ;  JP58016471-A   NISSAN MOTOR CO LTD (NSMO)   NAKAMURA M;  US5573866-A   INT FUEL CELLS CORP (ITFU)   MARICLE D L,  VAN DINE L L