US2003008194-A1 -- US5023151-A   INT FUEL CELLS CORP (ITFU)   LANDAU M B,  VARTANIAN G,  MATSUZAWA K;  US5863671-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  US6013385-A   EMPRISE CORP (EMPR-Non-standard)   DUBOSE R A;  US6110612-A   PLUG POWER INC (PLUG-Non-standard)   WALSH M M;  US6159629-A   BALLARD POWER SYSTEMS INC (BLRD)   GIBB P R,  YIP D K;  US6162554-A   SIEMENS AG (SIEI)   NOELSCHER C,  KIRCHER R;  US20020168560-A1   ;  US6214486-B1   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  US6531236-B1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   HATOH K,  YASUMOTO E,  NISHIDA K,  GYOTEN H,  KANBARA T,  OHARA H,  UCHIDA M,  SUGAWARA Y,  MATSUMOTO T;  US6541148-B1   PLUG POWER INC (PLUG-Non-standard)   WALSH M M,  WOOLLEY D F,  KRALICK J H;  US6613470-B1   HONDA GIKEN KK (HOND)   SUGITA N,  OSAO N,  USHIO T;  US6653008-B1   TOYOTA JIDOSHA KK (TOYT)   HIRAKATA S,  NISHIDA S,  AOTO A,  BISAKA T,  TANAKA H,  HOTTA Y;  WO2003007414-A2 -- JP2000164240-A   AISIN SEIKI KK (AISE)   SO I,  KAJIO K;  JP2001143734-A   ISUZU MOTORS LTD (ISUZ)   ISHIYAMA H;  US6051331-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  WO2002049132-A2   ;  US6869717-B2 -- US5023151-A   INT FUEL CELLS CORP (ITFU)   LANDAU M B,  VARTANIAN G,  MATSUZAWA K;  US5863671-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  US6013385-A   EMPRISE CORP (EMPR-Non-standard)   DUBOSE R A;  US6162554-A   SIEMENS AG (SIEI)   NOELSCHER C,  KIRCHER R;  US6214486-B1   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  US6531236-B1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   HATOH K,  YASUMOTO E,  NISHIDA K,  GYOTEN H,  KANBARA T,  OHARA H,  UCHIDA M,  SUGAWARA Y,  MATSUMOTO T;  JP2000164240-A   AISIN SEIKI KK (AISE)   SO I,  KAJIO K;  JP2002143734-A   ;  US4670361-A   SANYO ELECTRIC CO (SAOL)   TSUTSUMI M,  HAGINO H,  FUJIWARA O;  US4873155-A   FUJI ELECTRIC MFG CO LTD (FJIE)   HIROTA T,  OUCHI T,  YAMAMOTO O;  US5472800-A   SANYO ELECTRIC CO LTD (SAOL)   GOTO H,  MIYAKE Y,  NAKAJIMA T;  US6051331-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  US6110612-A   PLUG POWER INC (PLUG-Non-standard)   WALSH M M;  US6159629-A   BALLARD POWER SYSTEMS INC (BLRD)   GIBB P R,  YIP D K;  US20020168560-A1   ;  US6541148-B1   PLUG POWER INC (PLUG-Non-standard)   WALSH M M,  WOOLLEY D F,  KRALICK J H;  US6613470-B1   HONDA GIKEN KK (HOND)   SUGITA N,  OSAO N,  USHIO T;  US6653008-B1   TOYOTA JIDOSHA KK (TOYT)   HIRAKATA S,  NISHIDA S,  AOTO A,  BISAKA T,  TANAKA H,  HOTTA Y;  WO2002049132-A2   ;  WO2003007414-A3 -- JP2000164240-A   AISIN SEIKI KK (AISE)   SO I,  KAJIO K;  JP2001143734-A   ISUZU MOTORS LTD (ISUZ)   ISHIYAMA H;  US6051331-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  WO2002049132-A2