US7005209-B1 -- EP709907-A1   CANON KK (CANO)   KAWAKAMI S,  MISHINA S,  KOBAYASHI N,  ASAO M;  JP05041239-A   ;  JP63232275-A   ;  US3616841-A   ENERGY RESEARCH AND GENER (ENE-Non-standard);  US4058482-A   UNITED TECHNOLOGIES CORP (UNAC)   BARIS J M,  IACOVANGELO C D,  VOGEL W M;  US4125676-A   UNITED TECHNOLOGIES CORP (UNAC)   MARICLE D L,  NAGLE D C;  US4175165-A   ENGELHARD MINERALS CORP (ENGH)   ADLHART O J;  US4496437-A   DOW CHEM CO (DOWC)   MCINTYRE J A,  PHILLIPS R F;  US4818741-A   ELECTRIC POWER RES INST INC (ELPO)   HERSCOVICI C;  US4876115-A   US DEPT ENERGY (USAT)   RAISTRICK I D;  US4910099-A   US DEPT ENERGY (USAT)   GOTTESFELD S;  US5079105-A   ASEA BROWN BOVERI A (ALLM)   BOSSEL U;  US5364712-A   HUGHES AIRCRAFT CO (HUGA)   TOWNSEND C W;  US5366819-A   CERAMATEC INC (CERA-Non-standard)   KHANDKAR A C,  HARTVIGSEN J J;  US5418079-A   SULZER INNOTEC AG (SULZ)   DIETHELM R;  US5482792-A   DE NORA PERMELEC SPA (ORON)   FAITA G,  MANTEGAZZA C;  US5565072-A   DE NORA PERMELEC SPA (ORON)   FAITA G,  MANTEGAZZA C;  US5578388-A   DE NORA PERMELEC SPA (ORON)   FAITA G,  MANTEGAZZA C;  US5589285-A   TECHNOLOGY MANAGEMENT INC (TECH-Non-standard)   CABLE T L,  PETRIK M A;  US5763114-A   CERAMATEC INC (CERA-Non-standard)   KHANDKAR A C,  ELANGOVAN S,  HARTVIGSEN J J;  US5853910-A   EQUOS RES KK (EQUS);  AISIN AW CO LTD (AISW)   SHIRAISHI K,  IZUMISAWA S,  UENO M,  TOMIOKA N,  NAKASHIMA H,  NAKAJIMA Y;  US5879826-A   ;  US6007932-A   GORE & ASSOC INC W L (GORE)   STEYN W J;  US6022634-A   DE NORA SPA (ORON)   RAMUNNI E,  FLEBA G,  BRAMBILLA M;  US6051117-A   ;  US6140266-A   INT FUEL CELLS LLC (ITFU)   CORRIGAN T J,  BONVILLE L J,  LESIEUR R R,  HILDRETH D W,  LUKIANOFF M G;  US6146780-A   LYNNTECH INC (LYNN-Non-standard)   CISAR A J,  MURPHY O J;  US20020068208-A1   ;  US6232010-B1   LYNNTECH INC (LYNN-Non-standard)   SALINAS C,  CISAR A J,  MURPHY O J,  SIMPSON S,  MOADDEL H,  JENG K,  WENG D;  US6280870-B1   PLUG POWER INC (PLUG-Non-standard)   EISMAN G A,  MAYNARD W B,  FARKASH R H,  CARLSTROM C M;  US6284399-B1   PLUG POWER LLC (PLUG-Non-standard)   OKO U M,  KRALICK J H;  US6372376-B1   GENERAL MOTORS CORP (GENK)   FRONK M H,  BORUP R L,  BRADY B K,  CUNNINGHAM K M,  HULETT J S;  US6387556-B1   AVISTA LAB INC (AVIS-Non-standard)   FUGLEVAND W A,  BAYYUK S I,  LLOYD G A,  DEVRIES P D,  LOTT D R,  SCARTOZZI J P;  US6387557-B1   UTC FUEL CELLS LLC (UNAC)   KRASIJ M,  RAJPOLT M J;  US6403249-B1   UNIV HUMBOLDT STATE FOUND (UYHU-Non-standard)   REID R M;  US6410180-B1   LYNNTECH INC (LYNN-Non-standard)   CISAR A J,  WENG D,  MURPHY O J;  US6413664-B1   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  VANDERLEEDEN O,  DUDLEY J T;  US6531238-B1   RELIANT ENERGY POWER SYSTEMS INC (RELI-Non-standard)   KING G R;  US6399234-B2   BONK S P (BONK-Individual);  KRASIJ M (KRAS-Individual);  REISER C A (REIS-Individual)   BONK S P,  KRASIJ M,  REISER C A;  US6828054-B2   UNIV TEXAS A & M SYSTEM (TEXA)   APPLEBY A J,  GAMBURZEV S;  US16-H   US DEPT ENERGY (USAT);  US GOVERNMENT (USGO)   KAUN T D;  WO1996020509-A1   ;  WO1997024474-A1   ;  WO2000072373-A1