US2004053099-A1 -- US4212929-A   US DEPT ENERGY (USAT)   GREVSTAD P E,  JOHNSON C K,  MIENTEK A P;  US4445994-A   KERNFORSCHUNGSANLAGE JUELICH (KERJ)   DIVISEK J,  SCHMITZ H;  US4514475-A   US DEPT ENERGY (USAT);  US GOVERNMENT (USGO)   MIENTEK A P;  US4548675-A   NEW FIBERS INT INC (NEWF-Non-standard)   GORDY J;  US4609595-A   US DEPT ENERGY (USAT)   NICKOLS R C;  US4737421-A   SHOWA DENKO KK (SHOW);  US4743519-A   KUREHA KAGAKU KOGYO KK (KURE)   KAJI H,  SAITOH K;  US4818640-A   KUREHA KAGAKU KOGYO KK (KURE)   FUKUDA H,  SHIGETA M,  OHUCHI K,  KAJI H,  SAITOH K,  FUNABASHI M;  US5084364-A   ECN ENERGIEOND CENT (ECNE-Non-standard);  STICHTING ENERGIE (ENER-Non-standard)   QUAADVLIET H J;  US5176966-A   BALLARD POWER SYSTEMS INC (BLRD)   EPP D G,  WIENS B I;  US5328779-A   MEDICOAT AG (MEDI-Non-standard)   TANNENBERG H,  GRUNER H;  US5338621-A   BOSSEL U (BOSS-Individual)   BOSSEL U;  US5470671-A   BALLARD POWER SYSTEMS INC (BLRD)   FLETCHER N J,  LAMONT G J,  BASURA V,  VOSS H H,  WILKINSON D P;  US5683828-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  US5698337-A   MTU FRIEDRICHSHAFEN GMBH (MOTU)   NITSCHKE F,  WIND J,  HUBER H;  US5773161-A   ENERGY RES CORP (ENER-Non-standard)   FAROOQUE M,  DOYON J D,  PRIMERANO M T,  MEACHAM G B;  US5858567-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  US5863671-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  US5945232-A   PLUG POWER LLC (PLUG-Non-standard)   ERNST W D,  MITTLEMAN G;  US5976727-A   UCAR CARBON TECHNOLOGY CORP (UNIC)   MERCURI R A,  GOUGH J J;  US6020083-A   INT FUEL CELLS LLC (ITFU)   BREAULT R D,  KRASIJ M;  US6030718-A   AVISTA LABS (AVIS-Non-standard);  FUGLEVAND W A (FUGL-Individual)   FUGLEVAND W A,  BAYYUK S I,  LLOYD G A,  DEVRIES P D,  LOTT D R,  SCARTOZZI J P,  SOMERS G M,  STOKES R G;  US6051331-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  US6057054-A   BALLARD POWER SYSTEMS INC (BLRD)   BARTON R H,  GIBB P R,  RONNE J A,  VOSS H H;  US6059943-A   LYNNTECH INC (LYNN-Non-standard)   CISAR A J,  MURPHY O J;  US6060189-A   UCAR CARBON TECHNOLOGY CORP (UNIC)   MERCURI R A,  GOUGH J J;  US6066409-A   BALLARD POWER SYSTEMS INC (BLRD)   BARTON R H,  GIBB P R,  RONNE J A,  VOSS H H;  US6080503-A   BALLARD POWER SYSTEMS INC (BLRD)   SCHMID O,  EINHART J;  US6087033-A   SIEMENS AG (SIEI)   GRUENE H,  BUCHNER P,  NEUMANN G;  US6132895-A   MOTOROLA INC (MOTI)   PRATT S D,  KELLEY R J,  DAVIS J L,  MUTHUSWAMY S;  US6159628-A   INT FUEL CELLS LLC (ITFU)   KRASIJ M,  MOSKEY E A;  US6165634-A   INT FUEL CELLS LLC (ITFU)   KRASIJ M,  MOSKEY E A;  US6190793-B1   BALLARD POWER SYSTEMS INC (BLRD)   BARTON R H,  GIBB P R,  RONNE J A,  VOSS H H;  US6207310-B1   UNIV CALIFORNIA (REGC)   WILSON M S,  ZAWODZINSKI C;  US6214486-B1   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  US6338492-B1   FREUDENBERG FA CARL (FREU)   SCHILLING H,  HOFMANN G,  BOCK E;  US6372374-B1   FUELCELL ENERGY INC (FUEL-Non-standard)   LI J,  YUH C,  LUCAS T,  PRIMERANO M;  US6379795-B1   DU PONT DE NEMOURS & CO E I (DUPO)   BISARIA M K,  ANDRIN P,  ABDOU M,  CAI Y