EP1385227-A2 -- DE10008022-A1   HONDA GIKEN KOGYO KK (HOND)   FUJII Y,  SUZUKI M,  SUGITA N;  DE10041532-A1   HONDA GIKEN KK (HOND)   SUGITA N,  OSAO N,  USHIO T;  DE4412451-C1   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  EP929112-A2   ELECTROCHEM INC (ELEC-Non-standard)   SHELEKIN A B,  BUSNELL C L,  PIEN M S;  JP08171926-A   ;  US2004101739-A1 -- US4431714-A   US DEPT ENERGY (USAT);  WESTINGHOUSE ELECTRIC CORP (WESE)   MEYERHOFF A;  US5193635-A   YAMAHA HATSUDOKI KK (YMHA)   MIZUNO Y,  HANAJIMA T,  MATSUBARA H;  US5641031-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5662184-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US20010030069-A1   ;  US6223843-B1   GENERAL MOTORS CORP (GENK)   O'CONNEL D B,  MOORE B S,  STRATTON M A,  MCMANIS J V;  US6348280-B1   MITSUBISHI ELECTRIC CORP (MITQ);  US6368739-B1   SOFCO (SOFC-Non-standard)   FROST L J,  ELANGOVAN S,  HARTVIGSEN J J,  TIMPER M,  LARSEN D L;  US6420061-B1   HONDA GIKEN KOGYO KK (HOND)   FUJII Y,  SUZUKI M,  SUGITA N;  US6492055-B1   TOSHIBA KK (TOKE)   SHIMOTORI S,  SAITO K,  HORI M;  US6548199-B1   DAIHATSU MOTOR CO LTD (DAHM)   TANAKA H,  MUNETOKI H;  US6613470-B1   HONDA GIKEN KK (HOND)   SUGITA N,  OSAO N,  USHIO T;  US7595125-B2 -- CA2318993-A1   TOSHIBA KK (TOKE)   SHIMOTORI S,  SAITO K,  HORI M;  CA2351871-A1   BALLARD POWER SYSTEMS INC (BLRD)   ZIMMERMAN J,  COLBOW K M,  GIBB P R,  VANDERLEEDEN O R;  DE10008022-A1   HONDA GIKEN KOGYO KK (HOND)   FUJII Y,  SUZUKI M,  SUGITA N;  DE10041532-A1   HONDA GIKEN KK (HOND)   SUGITA N,  OSAO N,  USHIO T;  DE10047145-A1   DAIHATSU MOTOR CO LTD (DAHM)   TANAKA H,  MUNETOKI H;  DE10041532-B   HONDA GIKEN KK (HOND)   SUGITA N,  OSAO N,  USHIO T;  DE10047145-B4   DAIHATSU MOTOR CO LTD (DAHM)   TANAKA H,  MUNETOKI H;  EP1246281-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   KOBAYASHI S,  HOSAKA M,  KANBARA T;  EP929112-A2   ELECTROCHEM INC (ELEC-Non-standard)   SHELEKIN A B,  BUSNELL C L,  PIEN M S;  EP1246281-B8   MATSUSHITA ELECTRIC IND CO LTD (MATU)   KOBAYASHI S,  HOSAKA M,  KANBARA T;  JP08171926-A   ;  JP09063622-A   ;  JP09134732-A   ;  JP10106610-A   ;  JP11067259-A   ;  JP60093764-A   ;  JP2000021422-A   TOSHIBA KK (TOKE)   SHIMOTORI S,  OMA A;  JP2000100456-A   AISIN SEIKI KK (AISE)   YAMADA C;  JP2000149974-A   ;  JP2000195529-A   MITSUBISHI ELECTRIC CORP (MITQ);  JP2001085041-A   SOFCO (SOFC-Non-standard)   FROST L J,  ELANGOVAN S,  HARTVIGSEN J J,  TIMPER M,  LARSEN D L;  JP2001118592-A   MATSUSHITA ELECTRIC IND CO LTD (MATU)   KOBAYASHI S,  HOSAKA M,  KANBARA T;  JP2002025570-A   ;  JP2002050391-A   ;  US4431714-A   US DEPT ENERGY (USAT);  WESTINGHOUSE ELECTRIC CORP (WESE)   MEYERHOFF A;  US5193635-A   YAMAHA HATSUDOKI KK (YMHA)   MIZUNO Y,  HANAJIMA T,  MATSUBARA H;  US5641031-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5662184-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US20010030069-A1   ;  US6223843-B1   GENERAL MOTORS CORP (GENK)   O'CONNEL D B,  MOORE B S,  STRATTON M A,  MCMANIS J V;  US6348280-B1   MITSUBISHI ELECTRIC CORP (MITQ);  US6368739-B1   SOFCO (SOFC-Non-standard)   FROST L J,  ELANGOVAN S,  HARTVIGSEN J J,  TIMPER M,  LARSEN D L;  US6420061-B1   HONDA GIKEN KOGYO KK (HOND)   FUJII Y,  SUZUKI M,  SUGITA N;  US6492055-B1   TOSHIBA KK (TOKE)   SHIMOTORI S,  SAITO K,  HORI M;  US6548199-B1   DAIHATSU MOTOR CO LTD (DAHM)   TANAKA H,  MUNETOKI H;  US6613470-B1   HONDA GIKEN KK (HOND)   SUGITA N,  OSAO N,  USHIO T;  WO2001013441-A2