WO2004013923-A1 -- EP281949-A   INT FUEL CELLS CORP (ITFU)   ROMANOWSKI W E;  EP959511-A2   TOYOTA JIDOSHA KK (TOYT)   TSUYOSHI T,  SOGO G;  EP975039-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   OHARA H,  UCHIDA M,  SUGAWARA Y;  EP1220347-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   YAMAZAKI T,  YAMAMOTO Y,  KUSAKABE H,  OHARA H,  HASE N,  TAKEGUCHI S;  US3134696-A   ;  US5863671-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  WO1997023006-A2   ;  EP1394877-A1 -- EP281949-A   INT FUEL CELLS CORP (ITFU)   ROMANOWSKI W E;  EP959511-A2   TOYOTA JIDOSHA KK (TOYT)   TSUYOSHI T,  SOGO G;  EP975039-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   OHARA H,  UCHIDA M,  SUGAWARA Y;  EP1220347-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   YAMAZAKI T,  YAMAMOTO Y,  KUSAKABE H,  OHARA H,  HASE N,  TAKEGUCHI S;  US3134696-A   ;  US5863671-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  WO1997023006-A2   ;  US2006127739-A1 -- US3134696-A   ;  US5863671-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  US6066408-A   PLUG POWER INC (PLUG-Non-standard)   VITALE N G,  JONES D O;  US20030175574-A1   ;  US20060127741-A1   ;  US6174616-B1   PLUG POWER INC (PLUG-Non-standard)   MARVIN R H,  CARLSTROM C H;  KR725927-B1 -- EP281949-A   INT FUEL CELLS CORP (ITFU)   ROMANOWSKI W E;  JP11510637-W   AEROJET GEN CORP (AERG)   SPEAR R G,  FRANKLIN J E,  HAYES W A,  JANKE D E;  US7662499-B2 -- DE10040654-A1   FORSCHUNGSZENTRUM JUELICH GMBH (KERJ)   DOHLE H,  BEWER T;  EP281949-A   INT FUEL CELLS CORP (ITFU)   ROMANOWSKI W E;  EP1429406-A1   SFC SMART FUEL CELL GMBH (SFCS-Non-standard)   HUBER M,  MUELLER J,  RUF C;  EP959511-A2   TOYOTA JIDOSHA KK (TOYT)   TSUYOSHI T,  SOGO G;  EP975039-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   OHARA H,  UCHIDA M,  SUGAWARA Y;  EP1220347-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   YAMAZAKI T,  YAMAMOTO Y,  KUSAKABE H,  OHARA H,  HASE N,  TAKEGUCHI S;  JP05029001-A   ;  JP08138699-A   ;  JP09134732-A   ;  JP10162842-A   ;  JP63236268-A   ;  JP2000036310-A   ;  JP2000100457-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   MATSUMOTO T,  HATOH K,  GYOTEN H,  KANBARA T,  NISHIDA K,  OHARA H;  JP2001297778-A   ;  JP11510637-W   AEROJET GEN CORP (AERG)   SPEAR R G,  FRANKLIN J E,  HAYES W A,  JANKE D E;  US3134696-A   ;  US5863671-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  US6066408-A   PLUG POWER INC (PLUG-Non-standard)   VITALE N G,  JONES D O;  US20030175574-A1   ;  US20060127741-A1   ;  US6174616-B1   PLUG POWER INC (PLUG-Non-standard)   MARVIN R H,  CARLSTROM C H;  WO1996037005-A1   ;  WO1998013891-A1   ;  WO1997023006-A2   ;  EP1394877-B1 -- DE10040654-A1   FORSCHUNGSZENTRUM JUELICH GMBH (KERJ)   DOHLE H,  BEWER T;  EP281949-A   INT FUEL CELLS CORP (ITFU)   ROMANOWSKI W E;  EP959511-A2   TOYOTA JIDOSHA KK (TOYT)   TSUYOSHI T,  SOGO G;  EP975039-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   OHARA H,  UCHIDA M,  SUGAWARA Y;  EP1220347-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   YAMAZAKI T,  YAMAMOTO Y,  KUSAKABE H,  OHARA H,  HASE N,  TAKEGUCHI S;  US3134696-A   ;  US5863671-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  WO1998013891-A1   ;  WO1997023006-A2