US2004137311-A1 -- US5350643-A   HITACHI LTD (HITA)   IMAHASHI J,  HORIBA T,  MURANAKA T;  US5952119-A   UNIV CALIFORNIA (REGC)   WILSON M S;  US5998058-A   INT FUEL CELLS CORP (ITFU)   FREDLEY R R;  US6024848-A   INT FUEL CELLS CORP (ITFU)   DUFNER B F,  BREAULT R D;  US6127059-A   JAPAN GORE TEX INC (NIGO)   HIROSHI K;  US20020051901-A1   ;  US6194094-B1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   SUGAWARA Y,  UCHIDA M,  OHARA H,  FUKUOKA Y,  EDA N;  US6280870-B1   PLUG POWER INC (PLUG-Non-standard)   EISMAN G A,  MAYNARD W B,  FARKASH R H,  CARLSTROM C M;  US6280872-B1   TOYOTA JIDOSHA KK (TOYT)   OZAKI T,  KAWAHARA T;  US6303245-B1   PLUG POWER INC (PLUG-Non-standard)   NELSON M H;  US6350539-B1   GENERAL MOTORS CORP (GENK)   WOOD D L,  GROT S A,  FLY G;  US6365293-B1   SANYO ELECTRIC CO LTD (SAOL)   ISONO T,  MIYAKE Y,  HAMADA A,  KANEKO M,  NAKATO K;  US6368476-B1   DE NORA SPA (ORON)   DEMARINIS M,  DE CASTRO E S,  ALLEN R J,  SHAIKH K;  WO2004066427-A1 -- EP872907-A1   SANYO ELECTRIC CO LTD (SAOL)   TANIGUCHI S,  MIYAKE Y,  KANEKO M;  US6024848-A   INT FUEL CELLS CORP (ITFU)   DUFNER B F,  BREAULT R D;  WO2001004980-A1   ;  US7303835-B2 -- EP872907-A1   SANYO ELECTRIC CO LTD (SAOL)   TANIGUCHI S,  MIYAKE Y,  KANEKO M;  EP846347-A2   BALLARD POWER SYSTEMS INC (BLRD)   JOHNSON M C,  WILKINSON D P,  ASMAN C P,  BOS M L,  POTTER R J;  EP872907-B1   SANYO ELECTRIC CO LTD (SAOL)   TANIGUCHI S,  MIYAKE Y,  KANEKO M;  US5350643-A   HITACHI LTD (HITA)   IMAHASHI J,  HORIBA T,  MURANAKA T;  US5952119-A   UNIV CALIFORNIA (REGC)   WILSON M S;  US5998058-A   INT FUEL CELLS CORP (ITFU)   FREDLEY R R;  US6024848-A   INT FUEL CELLS CORP (ITFU)   DUFNER B F,  BREAULT R D;  US6127059-A   JAPAN GORE TEX INC (NIGO)   HIROSHI K;  US20020051901-A1   ;  US6194094-B1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   SUGAWARA Y,  UCHIDA M,  OHARA H,  FUKUOKA Y,  EDA N;  US6280870-B1   PLUG POWER INC (PLUG-Non-standard)   EISMAN G A,  MAYNARD W B,  FARKASH R H,  CARLSTROM C M;  US6280872-B1   TOYOTA JIDOSHA KK (TOYT)   OZAKI T,  KAWAHARA T;  US6303245-B1   PLUG POWER INC (PLUG-Non-standard)   NELSON M H;  US6350539-B1   GENERAL MOTORS CORP (GENK)   WOOD D L,  GROT S A,  FLY G;  US6365293-B1   SANYO ELECTRIC CO LTD (SAOL)   ISONO T,  MIYAKE Y,  HAMADA A,  KANEKO M,  NAKATO K;  US6368476-B1   DE NORA SPA (ORON)   DEMARINIS M,  DE CASTRO E S,  ALLEN R J,  SHAIKH K;  WO2001004980-A1   ;  JP4459820-B2 -- JP10289723-A   SANYO ELECTRIC CO LTD (SAOL)   TANIGUCHI S,  MIYAKE Y,  KANEKO M;  JP2001236976-A   ;  JP2002124270-A   SANYO ELECTRIC CO LTD (SAOL)   ISONO T,  YASUO K,  KONNO Y,  YONEZU I,  KABUMOTO H;  JP2002203571-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   KOBAYASHI S,  HOSAKA M;  WO2001004980-A1   ;  DE10394032-B4 -- DE19840517-A1   MANHATTAN SCIENTIFICS INC (MANH-Non-standard)   ROSENMAYER V;  EP872907-A1   SANYO ELECTRIC CO LTD (SAOL)   TANIGUCHI S,  MIYAKE Y,  KANEKO M;  US6024848-A   INT FUEL CELLS CORP (ITFU)   DUFNER B F,  BREAULT R D;  US6365293-B1   SANYO ELECTRIC CO LTD (SAOL)   ISONO T,  MIYAKE Y,  HAMADA A,  KANEKO M,  NAKATO K;  WO2001004980-A1