EP273427-A -- EP80159-A   TOKYO SHIBAURA DENKI KK (TOKE)   SHIROGAMI T,  UENO M;  EP122150-A   ENGELHARD CORP (ENGH)   DETTLING C J,  TERRY P L;  EP80159-B   TOKYO SHIBAURA DENKI KK (TOKE)   SHIROGAMI T,  UENO M;  EP122150-B   ENGELHARD CORP (ENGH)   DETTLING C J,  TERRY P L;  JP57199181-A   TOKYO SHIBAURA ELECTRIC CO (TOKE)   SHIROGAMI T,  UENO S;  JP58145066-A   HITACHI LTD (HITA);  HITACHI CHEM CO LTD (HITB)   YAMAGATA T,  UOZUMI S,  YASUKAWA S,  TSUTSUMI Y;  US4129685-A   UNITED TECHNOLOGIES CORP (UNAC);  US4756981-A -- US3867206-A   ;  US4035551-A   UNITED TECHNOLOGIES CORP (UNAC)   GREVSTAD P E;  US4038463-A   UNITED TECHNOLOGIES CORP (UNAC)   LAMARINE J H,  STEWART R C,  VINE R W;  US4064322-A   UNITED TECHNOLOGIES CORP (UNAC)   BUSHNELL C L,  KUNZ H R;  US4129685-A   UNITED TECHNOLOGIES CORP (UNAC);  US4185145-A   UNITED TECHNOLOGIES CORP (UNAC)   BREAULT R D;  US4259389-A   ;  US4365008-A   UNITED TECHNOLOGIES CORP (UNAC)   DECASPERIS J,  ROETHLEIN R J,  BREAULT R D;  US4374906-A   UNITED TECHNOLOGIES CORP (UNAC);  US4652502-A   INT FUEL CELLS INC (ITFU)   BREAULT R D,  DONAHUE J;  US4824739-A -- EP80159-A   TOKYO SHIBAURA DENKI KK (TOKE)   SHIROGAMI T,  UENO M;  EP122150-A   ENGELHARD CORP (ENGH)   DETTLING C J,  TERRY P L;  US3867206-A   ;  US4129685-A   UNITED TECHNOLOGIES CORP (UNAC);  US4269642-A   UNITED TECHNOLOGIES CORP (UNAC)   DECASPERIS A J,  ROETHLEIN R J,  BREAULT J D;  US4365008-A   UNITED TECHNOLOGIES CORP (UNAC)   DECASPERIS J,  ROETHLEIN R J,  BREAULT R D;  US4505992-A   ENGELHARD CORP (ENGH)   DETTLING C J,  TERRY P L;  US4652502-A   INT FUEL CELLS INC (ITFU)   BREAULT R D,  DONAHUE J;  EP273427-B1 -- EP80159-A   TOKYO SHIBAURA DENKI KK (TOKE)   SHIROGAMI T,  UENO M;  EP122150-A   ENGELHARD CORP (ENGH)   DETTLING C J,  TERRY P L;  JP57199181-A   TOKYO SHIBAURA ELECTRIC CO (TOKE)   SHIROGAMI T,  UENO S;  JP58145066-A   HITACHI LTD (HITA);  HITACHI CHEM CO LTD (HITB)   YAMAGATA T,  UOZUMI S,  YASUKAWA S,  TSUTSUMI Y;  US4129685-A   UNITED TECHNOLOGIES CORP (UNAC)