US2004101738-A1 -- US4232055-A   CHAMPION SPARK PLUG CO (CHAB);  DEVILBISS CO (DEVI);  US4937152-A   NKK CORP (NIKN)   SATO Y,  TSUNEIZUMI H,  NAKAGAWA H,  MORISHIGE E,  MIHARA H;  US5527363-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  LAMONT G J,  VOSS H H,  SCHWAB C;  US5621243-A   HITACHI LTD (HITA);  HITACHI HARAMACHI ELECTRONICS CO LTD (HITZ)   BABA N,  OKAMURA H,  SAKAMOTO M,  AKIYAMA H,  SAITO R,  KOIKE Y,  KITANO M,  SEKINE S,  KOKUBUN H,  KOIKE N;  US5698337-A   MTU FRIEDRICHSHAFEN GMBH (MOTU)   NITSCHKE F,  WIND J,  HUBER H;  US5716422-A   GREATBATCH LTD WILSON (GREW)   MUFFOLETTO B C,  PAULOT W M,  SPAULDING J E;  US5998522-A   KAWASAKI STEEL CORP (KAWI)   NAKANO T,  SHIMURA M,  OHTA T;  US6040075-A   UNIV LOUGHBOROUGH TECHNOLOGY (UYLO-Non-standard)   ADCOCK P L,  MITCHELL P J,  FOSTER S E;  US6132573-A   IGR ENTERPRISES INC (IGRI-Non-standard)   CUBUKCU E,  DAHAR S,  DODEJA R,  GORDON A Z,  KALYNCHUK D G,  PRINCE T S,  SOLTESZ J M,  WAITE M;  US20020187379-A1   ;  US20030097846-A1   ;  US6309521-B1   LYNNTECH INC (LYNN-Non-standard)   ANDREWS C C,  MURPHY O J,  ROGERS T D;  US6403246-B1   AISIN TAKAOKA KK (AISN);  NIPPON CHEM DENSI CO LTD (NICH-Non-standard)   MIZUNO M,  MATSUKAWA M;  US6428920-B1   CORNING INC (CORG)   BADDING M E,  KETCHAM T D,  ST JULIEN D J,  WUSIRIKA R R;  US6444340-B1   CERAMIC FUEL CELLS LTD (CERA-Non-standard)   JAFFREY D;  US6447942-B1   ENERGY CONVERSION DEVICES INC (ENGD)   OVSHINSKY S R,  VENKATESAN S,  ALADJOV B,  YOUNG R,  HOPPER T;  US6815012-B2   ALSTOM POWER SCHWEIZ AG (ALSM)   BAUMANN T,  FRIED R;  WO2004049485-A1 -- DE19937255-A1   ;  EP780916-A1   GENERAL MOTORS CORP (GENK)   DOLL G L,  HARRIS S J,  LI Y,  MENG W,  SWATHIRAJAN S;  US5527363-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  LAMONT G J,  VOSS H H,  SCHWAB C;  US5698337-A   MTU FRIEDRICHSHAFEN GMBH (MOTU)   NITSCHKE F,  WIND J,  HUBER H;  US6403246-B1   AISIN TAKAOKA KK (AISN);  NIPPON CHEM DENSI CO LTD (NICH-Non-standard)   MIZUNO M,  MATSUKAWA M;  WO1999041795-A1   ;  WO2000021152-A1   ;  WO2001071836-A1   ;  US7144648-B2 -- US5998522-A   KAWASAKI STEEL CORP (KAWI)   NAKANO T,  SHIMURA M,  OHTA T;  US20020187379-A1   ;  US20030097846-A1   ;  US6815012-B2   ALSTOM POWER SCHWEIZ AG (ALSM)   BAUMANN T,  FRIED R;  DE19937255-A1   ;  EP780916-A1   GENERAL MOTORS CORP (GENK)   DOLL G L,  HARRIS S J,  LI Y,  MENG W,  SWATHIRAJAN S;  US4232055-A   CHAMPION SPARK PLUG CO (CHAB);  DEVILBISS CO (DEVI);  US4937152-A   NKK CORP (NIKN)   SATO Y,  TSUNEIZUMI H,  NAKAGAWA H,  MORISHIGE E,  MIHARA H;  US5527363-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  LAMONT G J,  VOSS H H,  SCHWAB C;  US5621243-A   HITACHI LTD (HITA);  HITACHI HARAMACHI ELECTRONICS CO LTD (HITZ)   BABA N,  OKAMURA H,  SAKAMOTO M,  AKIYAMA H,  SAITO R,  KOIKE Y,  KITANO M,  SEKINE S,  KOKUBUN H,  KOIKE N;  US5698337-A   MTU FRIEDRICHSHAFEN GMBH (MOTU)   NITSCHKE F,  WIND J,  HUBER H;  US5716422-A   GREATBATCH LTD WILSON (GREW)   MUFFOLETTO B C,  PAULOT W M,  SPAULDING J E;  US6040075-A   UNIV LOUGHBOROUGH TECHNOLOGY (UYLO-Non-standard)   ADCOCK P L,  MITCHELL P J,  FOSTER S E;  US6132573-A   IGR ENTERPRISES INC (IGRI-Non-standard)   CUBUKCU E,  DAHAR S,  DODEJA R,  GORDON A Z,  KALYNCHUK D G,  PRINCE T S,  SOLTESZ J M,  WAITE M;  US6309521-B1   LYNNTECH INC (LYNN-Non-standard)   ANDREWS C C,  MURPHY O J,  ROGERS T D;  US6403246-B1   AISIN TAKAOKA KK (AISN);  NIPPON CHEM DENSI CO LTD (NICH-Non-standard)   MIZUNO M,  MATSUKAWA M;  US6428920-B1   CORNING INC (CORG)   BADDING M E,  KETCHAM T D,  ST JULIEN D J,  WUSIRIKA R R;  US6444340-B1   CERAMIC FUEL CELLS LTD (CERA-Non-standard)   JAFFREY D;  US6447942-B1   ENERGY CONVERSION DEVICES INC (ENGD)   OVSHINSKY S R,  VENKATESAN S,  ALADJOV B,  YOUNG R,  HOPPER T;  WO1999041795-A1   ;  WO2000021152-A1   ;  WO2001071836-A1