US6322917-B1 -- US4530886-A   UNITED TECHNOLOGIES CORP (UNAC)   SEDERQUIST R A;  US4537839-A   JOHNSON MATTHEY PLC (JOHO)   CAMERON D;  US4751151-A   INT FUEL CELLS CORP (ITFU)   HEALY H C,  KOLODNEY M,  LEVY A H,  TROCCIOLA J C;  US4766044-A   UNITED TECHNOLOGIES CORP (UNAC);  INT FUEL CELLS CORP (ITFU)   SEDERQUIST R A;  US4859545-A   INT FUEL CELLS CORP (ITFU)   SCHEFFLER G W,  VARTANIAN G;  US4879189-A   INT FUEL CELLS CORP (ITFU)   SNOPKOWSKI D J;  US4910099-A   US DEPT ENERGY (USAT)   GOTTESFELD S;  US5006425-A   FUJI ELECTRIC MFG CO LTD (FJIE)   TAKABAYASHI Y;  US5322744-A   FUJI ELECTRIC CO LTD (FJIE)   KOSEKI K;  US5334463-A   SANYO ELECTRIC CO LTD (SAOL)   YAMAMOTO S,  YONEDA F,  SHINDO K,  TAJIMA O,  SUMI S;  US5432020-A   DAIMLER-BENZ AG (DAIM)   FLECK W;  US5432021-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  VOSS H H,  DUDLEY J,  LAMONT G J,  BASURA V;  US5441819-A   BALLARD POWER SYSTEMS INC (BLRD)   VOSS H H,  WILKINSON D P,  WATKINS D S;  US5441821-A   BALLARD POWER SYSTEMS INC (BLRD)   GORBELL B N,  MERRITT R D;  US5482680-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  VOSS H H,  DUDLEY J,  LAMONT G J,  BASURA V;  US5527632-A   ROLLS ROYCE & ASSOC LTD (RORO)   GARDNER F J;  US5543238-A   SIEMENS AG (SIEI)   STRASSER K;  US5637415-A   GENERAL MOTORS CORP (GENK)   MELTSER M A,  HOCH M M;  US5677073-A   TOYOTA JIDOSHA KK (TOYT)   KAWATSU S;  US5702838-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   YASUMOTO E,  HATOH K,  GAMOU T;  US5712052-A   TOYOTA JIDOSHA KK (TOYT)   KAWATSU S;  US5786104-A   DOW CHEM CO (DOWC)   PLOWMAN K R,  BLACK L L;  US5853910-A   EQUOS RES KK (EQUS);  AISIN AW CO LTD (AISW)   SHIRAISHI K,  IZUMISAWA S,  UENO M,  TOMIOKA N,  NAKASHIMA H,  NAKAJIMA Y;  US5945229-A   GENERAL MOTORS CORP (GENK)   MELTSER M A;  US6001499-A   GENERAL MOTORS CORP (GENK);  UNIV CALIFORNIA (REGC)   NEUTZLER J K,  BORUP R L,  WEISBROD K,  GROT S A,  MELTSER M A,  GUTOWSKI S;  US6007931-A   INT FUEL CELLS CORP (ITFU)   FULLER T F,  MARGIOTT P R,  VAN DINE L L;  US6159626-A   GENERAL MOTORS CORP (GENK)   KESKULA D H,  DOAN T M,  CLINGERMAN B J;  WO1999005741-A1