US2004072040-A1 -- US2582885-A   ;  US3507704-A   ;  US3670122-A   ;  US3825706-A   DBA SA (SADB);  US3839091-A   UNITED AIRCRAFT CORP (UNAC);  US4513066-A   PRUTEC LTD (PRUT)   SIMONS D R;  US4528251-A   HITACHI LTD (HITA);  NIPPON CHEMICAL PLANT CO (NICH-Non-standard)   YAMAGUCHI M,  TSUTSUMI Y,  NOKITA S,  SHIMADA K,  MARUKO S;  US4769297-A   INT FUEL CELLS CORP (ITFU)   REISER C A,  SAWYER R D;  US5261452-A   AMERICAN AIR LIQUIDE (AIRL)   MCANDREW J J F,  BRANDT M D;  US5277994-A   ROCKWELL INT CORP (ROCW)   SPROUSE K M;  US5507309-A   UNITED TECHNOLOGIES CORP (UNAC)   DEAN W C;  US5512145-A   COOPER UNION ADVANCEMENT SCI & ART (COOP-Non-standard)   HOLLENBERG J W;  US5607784-A   ELECTROCHEM INC (ELEC-Non-standard)   JOHNSON D A,  JALAN V,  DESAI M N;  US5690797-A   MITSUBISHI CORP (MITS);  SHINKO PANTEC CO LTD (SHIA)   HARADA M,  SASAKI T,  HIRAI S,  YASUI S,  KOBAYASHI H,  NAGAO M;  US5783051-A   SHINKO PANTEC CO LTD (SHIA)   HIRAI S,  YASUI S,  KOBAYASHI H,  NAGAO M,  SASAKI T,  ASARI A,  HARADA M;  US5914199-A   LOCKHEED MARTIN TACTICAL DEFENSE SYSTEMS (LOCK)   GREGG D W,  CARTER D L;  US5972530-A   ELECTROCHEM INC (ELEC-Non-standard)   SHELEKIN A B,  BUSNELL C L,  PIEN M S;  US6033549-A   DEUT ZENT LUFT & RAUMFAHRT EV (DELF)   MOHR P,  PEINECKE V;  US20020015870-A1   ;  US20020022165-A1   ;  US20020025467-A1   ;  US20030141200-A1   ;  US6248466-B1   TOYOTA JIDOSHA KK (TOYT)   TSUYOSHI T,  SOGO G;  US6329098-B1   BLIESNER W T (BLIE-Individual)   BLIESNER W T;  US6576096-B1   LYNNTECH INC (LYNN-Non-standard)   ANDREWS C C,  MURPHY O J,  ROGERS T D;  US6833206-B2   ERDLE E K (ERDL-Individual);  RICHTERS V (RICH-Individual);  SCHMID O (SCHM-Individual)   ERDLE E K,  RICHTERS V,  SCHMID O;  US6861167-B2   BALLARD POWER SYSTEMS INC (BLRD)   WELLS B,  UONG T D,  SCHEMBRI C J,  JAMES G A,  SKINNER G A,  GIESECKE B;  US7097748-B2 -- DE10258525-A1   ;  JP09291386-A   ;  JP2000054175-A   MITSUBISHI JUKOGYO KK (MITO)   UENO T,  TAKEDA H,  NAKAMORI N;  US2582885-A   ;  US3507704-A   ;  US3670122-A   ;  US3825706-A   DBA SA (SADB);  US3839091-A   UNITED AIRCRAFT CORP (UNAC);  US4513066-A   PRUTEC LTD (PRUT)   SIMONS D R;  US4528251-A   HITACHI LTD (HITA);  NIPPON CHEMICAL PLANT CO (NICH-Non-standard)   YAMAGUCHI M,  TSUTSUMI Y,  NOKITA S,  SHIMADA K,  MARUKO S;  US4769297-A   INT FUEL CELLS CORP (ITFU)   REISER C A,  SAWYER R D;  US5261452-A   AMERICAN AIR LIQUIDE (AIRL)   MCANDREW J J F,  BRANDT M D;  US5277994-A   ROCKWELL INT CORP (ROCW)   SPROUSE K M;  US5507309-A   UNITED TECHNOLOGIES CORP (UNAC)   DEAN W C;  US5512145-A   COOPER UNION ADVANCEMENT SCI & ART (COOP-Non-standard)   HOLLENBERG J W;  US5607784-A   ELECTROCHEM INC (ELEC-Non-standard)   JOHNSON D A,  JALAN V,  DESAI M N;  US5690797-A   MITSUBISHI CORP (MITS);  SHINKO PANTEC CO LTD (SHIA)   HARADA M,  SASAKI T,  HIRAI S,  YASUI S,  KOBAYASHI H,  NAGAO M;  US5783051-A   SHINKO PANTEC CO LTD (SHIA)   HIRAI S,  YASUI S,  KOBAYASHI H,  NAGAO M,  SASAKI T,  ASARI A,  HARADA M;  US5914199-A   LOCKHEED MARTIN TACTICAL DEFENSE SYSTEMS (LOCK)   GREGG D W,  CARTER D L;  US5972530-A   ELECTROCHEM INC (ELEC-Non-standard)   SHELEKIN A B,  BUSNELL C L,  PIEN M S;  US6033549-A   DEUT ZENT LUFT & RAUMFAHRT EV (DELF)   MOHR P,  PEINECKE V;  US20020015870-A1   ;  US20020022165-A1   ;  US20020025467-A1   ;  US20030141200-A1   ;  US6248466-B1   TOYOTA JIDOSHA KK (TOYT)   TSUYOSHI T,  SOGO G;  US6329098-B1   BLIESNER W T (BLIE-Individual)   BLIESNER W T;  US6576096-B1   LYNNTECH INC (LYNN-Non-standard)   ANDREWS C C,  MURPHY O J,  ROGERS T D;  US6833206-B2   ERDLE E K (ERDL-Individual);  RICHTERS V (RICH-Individual);  SCHMID O (SCHM-Individual)   ERDLE E K,  RICHTERS V,  SCHMID O;  US6861167-B2   BALLARD POWER SYSTEMS INC (BLRD)   WELLS B,  UONG T D,  SCHEMBRI C J,  JAMES G A,  SKINNER G A,  GIESECKE B;  WO2004055242-A1