US2005221156-A1 -- US3634140-A   ;  US5252410-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  VOSS H H,  PRATER K B;  US5350642-A   OSAKA GAS CO LTD (OSAG)   AKAGI K;  US5364711-A   TOSHIBA KK (TOKE)   YAMADA S,  KANDA M,  YAMAMOTO M,  SUZUKI N,  KANAZAWA R,  MOTOMIYA A,  KONDO T,  UCHIDA T,  HASHIMOTO K,  NIKI H,  SASAKI K,  TSURUTA S;  US5480738-A   CERAMATEC INC (CERA-Non-standard)   ELANGOVAN S,  KHANDKAR A C,  HARTVIGSEN J J;  US5631099-A   HOCKADAY R G (HOCK-Individual)   HOCKADAY R G;  US5672439-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  JOHNSON M C,  COLBOW K M,  CAMPBELL S A;  US5759712-A   HOCKADAY R G (HOCK-Individual)   HOCKADAY R G;  US5861221-A   FRAUNHOFER GES FOERDERUNG ANGEWANDTEN (FRAU)   LEDJEFF K,  NOLTE R;  US5925477-A   FRAUNHOFER GES FOERDERUNG ANGEWANDTEN (FRAU)   LEDJEFF K,  NOLTE R;  US5989741-A   DU PONT DE NEMOURS & CO E I (DUPO)   BANERJEE S,  POLEVAYA O Y,  FERRIS J J,  BLOOMFIELD D P;  US6060188-A   MOTOROLA INC (MOTI)   MUTHUSWAMY S,  KELLEY R J,  YORIO R,  PRATT S D;  US6127058-A   MOTOROLA INC (MOTI)   PRATT S D,  KELLEY R J,  MUTHUSWAMY S,  LANDRETH B D,  PENNISI R W;  US6830736-B1   XCELLSIS GMBH (XCEL-Non-standard)   LAMLA O,  SCHUESSLER M;  US6620542-B2   HEWLETT-PACKARD CO (HEWP)   PAN A I;  US6740444-B2   LEBAN M (LEBA-Individual)   LEBAN M;  US7195652-B2 -- CA2396191-A   ACCENTUS PLC (ACCN)   BOWE M J,  STAIRMAND J W,  ZIMMERMAN I F,  MAUDE J A;  CA2438733-A   BATTELLE MEMORIAL INST (BATT)   TONKOVICH A L Y,  PERRY S T,  FITZGERALD S P,  ROBERTS G L;  CA2484294-A   HONDA GIKEN KOGYO KK (HOND)   SASAHARA J,  SUZUKI T,  KUBOTA T,  KURIYAMA N,  SAITO Y;  CA2273316-A1   BALLARD POWER SYSTEMS INC (BLRD)   RONNE J A,  WELLS B W,  BARTON R H;  EP585049-A1   CERAMATEC INC (CERA-Non-standard)   KHANDKAR A C,  ELANGOVAN S,  HARTVIGSEN J J;  EP823743-A2   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  EP823743-B1   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  GB2339058-A   BG PLC (GASC)   MCLEAN G F,  REID C E J,  DJILALI N,  CRANE P;  JP08050903-A   ;  US3634140-A   ;  US5252410-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  VOSS H H,  PRATER K B;  US5350642-A   OSAKA GAS CO LTD (OSAG)   AKAGI K;  US5364711-A   TOSHIBA KK (TOKE)   YAMADA S,  KANDA M,  YAMAMOTO M,  SUZUKI N,  KANAZAWA R,  MOTOMIYA A,  KONDO T,  UCHIDA T,  HASHIMOTO K,  NIKI H,  SASAKI K,  TSURUTA S;  US5480738-A   CERAMATEC INC (CERA-Non-standard)   ELANGOVAN S,  KHANDKAR A C,  HARTVIGSEN J J;  US5631099-A   HOCKADAY R G (HOCK-Individual)   HOCKADAY R G;  US5672439-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  JOHNSON M C,  COLBOW K M,  CAMPBELL S A;  US5759712-A   HOCKADAY R G (HOCK-Individual)   HOCKADAY R G;  US5861221-A   FRAUNHOFER GES FOERDERUNG ANGEWANDTEN (FRAU)   LEDJEFF K,  NOLTE R;  US5925477-A   FRAUNHOFER GES FOERDERUNG ANGEWANDTEN (FRAU)   LEDJEFF K,  NOLTE R;  US5989741-A   DU PONT DE NEMOURS & CO E I (DUPO)   BANERJEE S,  POLEVAYA O Y,  FERRIS J J,  BLOOMFIELD D P;  US6060188-A   MOTOROLA INC (MOTI)   MUTHUSWAMY S,  KELLEY R J,  YORIO R,  PRATT S D;  US6127058-A   MOTOROLA INC (MOTI)   PRATT S D,  KELLEY R J,  MUTHUSWAMY S,  LANDRETH B D,  PENNISI R W;  US6830736-B1   XCELLSIS GMBH (XCEL-Non-standard)   LAMLA O,  SCHUESSLER M;  US6620542-B2   HEWLETT-PACKARD CO (HEWP)   PAN A I;  US6740444-B2   LEBAN M (LEBA-Individual)   LEBAN M;  WO2001011763-A1   ;  WO2002017434-A1   ;  WO2002000063-A2