US2003215690-A1 -- US4721555-A   DOW CHEM CO (DOWC)   GROSSHANDL S;  US5264299-A   INT FUEL CELLS CORP (ITFU)   KRASIJ M,  WATSON P R;  US5464700-A   BALLARD POWER SYSTEMS INC (BLRD)   STECK A E,  WEI J;  US5928807-A   DAIMLER-BENZ AG (DAIM);  BALLARD POWER SYSTEMS INC (BLRD)   HARTMUT E;  US6057054-A   BALLARD POWER SYSTEMS INC (BLRD)   BARTON R H,  GIBB P R,  RONNE J A,  VOSS H H;  US6080503-A   BALLARD POWER SYSTEMS INC (BLRD)   SCHMID O,  EINHART J;  US6159928-A   KURARAY CO LTD (KURS)   MAYAHARA K,  MORI T,  TAMAI Y;  US20010019790-A1   ;  US20010019791-A1   ;  US20020034670-A1   ;  US20030104262-A1   ;  US6174616-B1   PLUG POWER INC (PLUG-Non-standard)   MARVIN R H,  CARLSTROM C H;  US6261711-B1   PLUG POWER INC (PLUG-Non-standard)   MATLOCK R R,  BUESING D G;  US6337120-B1   NOK CORP (NIOD)   SENDA K,  NAGAI O,  WAKAMATSU S,  ANDO O,  FUJIMOTO T;  WO2003100894-A2 -- US4721555-A   DOW CHEM CO (DOWC)   GROSSHANDL S;  US5264299-A   INT FUEL CELLS CORP (ITFU)   KRASIJ M,  WATSON P R;  US6080503-A   BALLARD POWER SYSTEMS INC (BLRD)   SCHMID O,  EINHART J;  US20020034670-A1   ;  US7217471-B2 -- EP833400-A1   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  EP940868-A2   HONDA GIKEN KOGYO KK (HOND)   FUJII Y,  OKAMOTO T,  TANAKA M,  YAMAMOTO A,  ONO H,  SUGITA N;  EP1083616-A2   HONDA GIKEN KOGYO KK (HOND)   FUJII Y,  OSAO N,  WARIISHI Y,  NAKAGAWA T,  SHINKAI H,  HAYASHI K;  US4721555-A   DOW CHEM CO (DOWC)   GROSSHANDL S;  US5264299-A   INT FUEL CELLS CORP (ITFU)   KRASIJ M,  WATSON P R;  US5441621-A   UNITED TECHNOLOGIES CORP (UNAC)   MOLTER T,  FAYE D,  ARMSTRONG W;  US5464700-A   BALLARD POWER SYSTEMS INC (BLRD)   STECK A E,  WEI J;  US5928807-A   DAIMLER-BENZ AG (DAIM);  BALLARD POWER SYSTEMS INC (BLRD)   HARTMUT E;  US6057054-A   BALLARD POWER SYSTEMS INC (BLRD)   BARTON R H,  GIBB P R,  RONNE J A,  VOSS H H;  US6080503-A   BALLARD POWER SYSTEMS INC (BLRD)   SCHMID O,  EINHART J;  US6159628-A   INT FUEL CELLS LLC (ITFU)   KRASIJ M,  MOSKEY E A;  US20010019790-A1   ;  US20010019791-A1   ;  US20020034670-A1   ;  US20030104262-A1   ;  US6174616-B1   PLUG POWER INC (PLUG-Non-standard)   MARVIN R H,  CARLSTROM C H;  US6261711-B1   PLUG POWER INC (PLUG-Non-standard)   MATLOCK R R,  BUESING D G;  US6337120-B1   NOK CORP (NIOD)   SENDA K,  NAGAI O,  WAKAMATSU S,  ANDO O,  FUJIMOTO T;  WO1996037920-A1   ;  WO2002001658-A1   ;  WO2003100894-A3 -- WO2000032215-A1   ;  WO2001035096-A2