US2004005491-A1 -- US3516807-A   TEXAS INSTR INC (TEXI);  US3607419-A   UNITED AIRCRAFT CORP (UNAC);  US5441821-A   BALLARD POWER SYSTEMS INC (BLRD)   GORBELL B N,  MERRITT R D;  US6656622-B2   GRASSO A P (GRAS-Individual)   GRASSO A P;  WO2004006375-A1 -- US3607419-A   UNITED AIRCRAFT CORP (UNAC);  US3929974-A   ELECTRIC REDUCTION CO CANADA (ALBR);  US5482791-A   FUJI ELECTRIC CO LTD (FJIE)   SHINKAI H;  US5728183-A   HYDROGEN BURNER TECHNOLOGY INC (HYDR-Non-standard)   HERZIG A M;  US5856034-A   MTU FRIEDRICHSHAFEN GMBH (MOTU)   HUPPMANN G,  KRAUS P;  US6387555-B1   INT FUEL CELLS LLC (ITFU)   WHEELER D J,  CORRIGAN T J,  BONVILLE L J,  LESIEUR R R,  HILDRETH D W,  REISER C A;  US6572994-B1   TOSHIBA KK (TOKE)   SHIMOTORI S,  HARADA M,  SAITO K,  OGAMI Y,  OHMA A,  SONAI A,  HORI M;  US6902840-B2 -- US3516807-A   TEXAS INSTR INC (TEXI);  US3607419-A   UNITED AIRCRAFT CORP (UNAC);  US5441821-A   BALLARD POWER SYSTEMS INC (BLRD)   GORBELL B N,  MERRITT R D;  US6656622-B2   GRASSO A P (GRAS-Individual)   GRASSO A P;  EP1540751-A1 -- DE19743075-A1   ;  US5856034-A   MTU FRIEDRICHSHAFEN GMBH (MOTU)   HUPPMANN G,  KRAUS P;  US6124053-A   FUEL CELL TECHNOLOGIES INC (FUEL-Non-standard)   BERNARD R M,  ALLEN J;  WO2002041425-A2   ;  JP4146427-B2 -- JP06223851-A   ;  JP11238520-A   ;  JP2003132921-A   ;  JP09511612-W   ;  US3607419-A   UNITED AIRCRAFT CORP (UNAC);  US3929974-A   ELECTRIC REDUCTION CO CANADA (ALBR);  WO1996039247-A1   ;  WO2000025379-A1   ;  EP1540751-B1 -- DE19743075-A1   ;  US3607419-A   UNITED AIRCRAFT CORP (UNAC);  US3929974-A   ELECTRIC REDUCTION CO CANADA (ALBR);  US5482791-A   FUJI ELECTRIC CO LTD (FJIE)   SHINKAI H;  US5728183-A   HYDROGEN BURNER TECHNOLOGY INC (HYDR-Non-standard)   HERZIG A M;  US5856034-A   MTU FRIEDRICHSHAFEN GMBH (MOTU)   HUPPMANN G,  KRAUS P;  US6124053-A   FUEL CELL TECHNOLOGIES INC (FUEL-Non-standard)   BERNARD R M,  ALLEN J;  US6387555-B1   INT FUEL CELLS LLC (ITFU)   WHEELER D J,  CORRIGAN T J,  BONVILLE L J,  LESIEUR R R,  HILDRETH D W,  REISER C A;  US6572994-B1   TOSHIBA KK (TOKE)   SHIMOTORI S,  HARADA M,  SAITO K,  OGAMI Y,  OHMA A,  SONAI A,  HORI M;  WO2002041425-A3