WO2003092091-A2 -- DE10107789-A1   HELIOCENTRIS ENERGIESYSTEME GMBH (HELI-Non-standard)   BRONOLD M,  SCHATTAUER U,  LEU C,  THOM W;  EP629015-A1   DE NORA PERMELEC SPA (ORON)   FAITA G,  MANTEGAZZA C;  EP896379-A1   DE NORA SPA (ORON)   BRAMBILLA M,  CERUTI V;  US4292379-A   WESTINGHOUSE ELECTRIC CORP (WESE)   KOTHMANN R E;  US5616431-A   KANSAI DENRYOKU KK (KANT);  MITSUBISHI ELECTRIC CORP (MITQ)   KUSUNOKI H,  OTSUKI S,  KIKUOKA Y,  OKADA T,  MATSUMURA M,  SHINOKI T,  MUKAI M,  YAGI T;  US6007933-A   PLUG POWER LLC (PLUG-Non-standard)   JONES D O;  EP1504481-B1 -- DE10107789-A1   HELIOCENTRIS ENERGIESYSTEME GMBH (HELI-Non-standard)   BRONOLD M,  SCHATTAUER U,  LEU C,  THOM W;  EP629015-A1   DE NORA PERMELEC SPA (ORON)   FAITA G,  MANTEGAZZA C;  EP896379-A1   DE NORA SPA (ORON)   BRAMBILLA M,  CERUTI V;  US4292379-A   WESTINGHOUSE ELECTRIC CORP (WESE)   KOTHMANN R E;  US5616431-A   KANSAI DENRYOKU KK (KANT);  MITSUBISHI ELECTRIC CORP (MITQ)   KUSUNOKI H,  OTSUKI S,  KIKUOKA Y,  OKADA T,  MATSUMURA M,  SHINOKI T,  MUKAI M,  YAGI T;  US6007933-A   PLUG POWER LLC (PLUG-Non-standard)   JONES D O;  US2006251948-A1 -- US4292379-A   WESTINGHOUSE ELECTRIC CORP (WESE)   KOTHMANN R E;  US5565072-A   DE NORA PERMELEC SPA (ORON)   FAITA G,  MANTEGAZZA C;  US5616431-A   KANSAI DENRYOKU KK (KANT);  MITSUBISHI ELECTRIC CORP (MITQ)   KUSUNOKI H,  OTSUKI S,  KIKUOKA Y,  OKADA T,  MATSUMURA M,  SHINOKI T,  MUKAI M,  YAGI T;  US6007933-A   PLUG POWER LLC (PLUG-Non-standard)   JONES D O;  US6174616-B1   PLUG POWER INC (PLUG-Non-standard)   MARVIN R H,  CARLSTROM C H;  US7524574-B2 -- DE4234093-A1   SIEMENS AG (SIEI)   STRASSER K,  SAHLER R,  MATTEJAT A;  DE10048871-A1   FREUDENBERG FA CARL (FREU)   DUCLOS T,  KOCH S G,  BENTLEY F A,  BELCHUK M A,  HOCHGESANG P J;  DE10107789-A1   HELIOCENTRIS ENERGIESYSTEME GMBH (HELI-Non-standard)   BRONOLD M,  SCHATTAUER U,  LEU C,  THOM W;  DE19602315-A1   SIEMENS AG (SIEI)   NOELSCHER C,  MATTEJAT A;  EP591800-A1   SIEMENS AG (SIEI)   STRASSER K,  SAHLER R,  MATTEJAT A;  EP629015-A1   DE NORA PERMELEC SPA (ORON)   FAITA G,  MANTEGAZZA C;  EP896379-A1   DE NORA SPA (ORON)   BRAMBILLA M,  CERUTI V;  EP1083616-A2   HONDA GIKEN KOGYO KK (HOND)   FUJII Y,  OSAO N,  WARIISHI Y,  NAKAGAWA T,  SHINKAI H,  HAYASHI K;  US4292379-A   WESTINGHOUSE ELECTRIC CORP (WESE)   KOTHMANN R E;  US5565072-A   DE NORA PERMELEC SPA (ORON)   FAITA G,  MANTEGAZZA C;  US5616431-A   KANSAI DENRYOKU KK (KANT);  MITSUBISHI ELECTRIC CORP (MITQ)   KUSUNOKI H,  OTSUKI S,  KIKUOKA Y,  OKADA T,  MATSUMURA M,  SHINOKI T,  MUKAI M,  YAGI T;  US6007933-A   PLUG POWER LLC (PLUG-Non-standard)   JONES D O;  US6174616-B1   PLUG POWER INC (PLUG-Non-standard)   MARVIN R H,  CARLSTROM C H;  KR986033-B1 -- US4292379-A   WESTINGHOUSE ELECTRIC CORP (WESE)   KOTHMANN R E;  US5616431-A   KANSAI DENRYOKU KK (KANT);  MITSUBISHI ELECTRIC CORP (MITQ)   KUSUNOKI H,  OTSUKI S,  KIKUOKA Y,  OKADA T,  MATSUMURA M,  SHINOKI T,  MUKAI M,  YAGI T;  US6007933-A   PLUG POWER LLC (PLUG-Non-standard)   JONES D O;  JP4981251-B2 -- JP2002083614-A