US2002152680-A1 -- US3651641-A   ;  US3666682-A   TEXACO INC (TEXC);  US3890113-A   TEXACO INC (TEXC)   CHILD E T,  ROBIN A M;  US3897200-A   HOWE BAKER ENGINEERS INC (HOWB)   CHILDREE H T;  US3982962-A   UNITED TECHNOLOGIES CORP (UNAC);  US4004947-A   UNITED TECHNOLOGIES CORP (UNAC);  US4042016-A   BOOCHEVER E (BOOC-Individual)   BOOCHEVER E,  MUNK M;  US4046956-A   UNITED TECHNOLOGIES CORP (UNAC)   FANCIULLO S;  US4121912-A   TEXACO INC (TEXC)   BARBER E M,  MUENGER J R,  ALEXANDER D L;  US4215083-A   RICHTER GEDEON VEGYESZETI GYAR (RICT);  US4264566-A   PHILLIPS PETROLEUM CO (PHIP)   GILES R F,  GAINES L D;  US4473622-A   GENERAL ELECTRIC CO (GENE);  CHLUDZINSKI P J (CHLU-Individual);  UNITED TECHNOLOGIES CORP (UNAC)   CHLUDZINSK P J,  DANTOWITZ P,  MCELROY J F;  US4474582-A   TEXACO DEV CORP (TEXC)   DILLE R M,  ROBIN A M,  MIDDLETON L R,  BRENT A;  US4530886-A   UNITED TECHNOLOGIES CORP (UNAC)   SEDERQUIST R A;  US4833171-A   SWEENEY M P (SWEE-Individual)   SWEENEY M P,  YERUSHALMI A;  US5221524-A   TOSHIBA KK (TOKE)   EGUCHI T;  US5330727-A   INT FUEL CELLS CORP (ITFU)   TROCCIOLA J C,  SCHROLL C R,  LESIEUR R R;  US5360603-A   PRAXAIR TECHNOLOGY INC (PRAX)   DRNEVICH R F,  DREISINGER D R;  US5360679-A   BALLARD POWER SYSTEMS INC (BLRD)   LOUIE C,  WATKINS D S,  COHEN R,  BUSWELL R F,  CLAUSI J V;  US5380088-A   GEBR SULZER AG (SULZ);  SULZER CHEMTECH AG (SULZ)   FLEISCHLI M,  STREIFF F;  US5401589-A   VICKERS SHIPBUILDING & ENG (VICS);  CJBD LTD (CJBD-Non-standard)   PALMER I,  SEYMOUR C M,  DAMS R A J;  US5516344-A   INT FUEL CELLS CORP (ITFU)   CORRIGAN T J;  US5546701-A   HYDROGEN BURNER TECHNOLOGY INC (HYDR-Non-standard)   BHATT B,  MOARD D M,  GREINER L;  US6231831-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   AUTENRIETH R,  POSCHMANN T,  WIELAND S,  HEIL D,  BONEBERG S;  US6458478-B1   WANG C S (WANG-Individual)   WANG C S,  LYONS J D;  US6562088-B2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   UKAI K,  HONDA K,  TAGUCHI K,  TOMIZAWA T,  KITAGAWA K,  SHONO T;  WO200285779-A1 -- US3666682-A   TEXACO INC (TEXC);  US3897200-A   HOWE BAKER ENGINEERS INC (HOWB)   CHILDREE H T;  US4215083-A   RICHTER GEDEON VEGYESZETI GYAR (RICT);  US5330727-A   INT FUEL CELLS CORP (ITFU)   TROCCIOLA J C,  SCHROLL C R,  LESIEUR R R;  US5360679-A   BALLARD POWER SYSTEMS INC (BLRD)   LOUIE C,  WATKINS D S,  COHEN R,  BUSWELL R F,  CLAUSI J V;  JP3964794-B2 -- JP05326008-A   ;  JP62283567-A   ;  JP2000086203-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   UKAI K,  HONDA K,  TAGUCHI K,  TOMIZAWA T,  KITAGAWA K,  SHONO T