US2004142229-A1 -- US5114803-A   NGK INSULATORS LTD (NIGA)   ISHIHARA T,  FUJITA T,  MISAWA H;  US5912088-A   PLUG POWER LLC (PLUG-Non-standard)   ERNST W D;  US5985476-A   GAS RES INST (GASR-Non-standard)   LOWE D M,  POUND B G,  WACHSMAN E D,  JAYAWEERA P;  US6033794-A   US DEPT ENERGY (USAT)   GEORGE T J,  SMITH W C;  US6051173-A   INT BUSINESS MACHINES CORP (IBMC)   FASANO B V,  PRETTYMAN K M;  US6051329-A   INT BUSINESS MACHINES CORP (IBMC)   FASANO B V,  PRETTYMAN K M;  US20020107140-A1   ;  US6228521-B1   UNIV UTAH RES FOUND (UTAH)   KIM J,  FUNG K,  VIRKAR A V;  US6287716-B1   MITSUBISHI MATERIALS CORP (MITV)   HASHIMOTO I,  KOMADA N,  ADACHI K;  US6365293-B1   SANYO ELECTRIC CO LTD (SAOL)   ISONO T,  MIYAKE Y,  HAMADA A,  KANEKO M,  NAKATO K;  US6376117-B1   SOFCO LP (SOFC-Non-standard)   KANTAK M V,  CABLE T L;  US6444602-B1   DE NORA SPA (ORON)   DEMARINIS M,  DE CASTRO E S,  ALLEN R J,  SHAIKH K;  US6933067-B2   TOYOTA JIDOSHA KK (TOYT)   KAWAHARA T,  KINOSHITA K,  KINO Y,  OZAKI T;  EP1441406-A2 -- DE19512755-A1   ;  DE19546326-A1   ;  EP1176654-A2   TOYOTA JIDOSHA KK (TOYT)   KAWAHARA T,  KINOSHITA K,  KINO Y,  OZAKI T;  US20020107140-A1   ;  US7291417-B2 -- DE19512755-A1   ;  DE19546326-A1   ;  EP1176654-A2   TOYOTA JIDOSHA KK (TOYT)   KAWAHARA T,  KINOSHITA K,  KINO Y,  OZAKI T;  JP03222261-A   ;  JP07085874-A   ;  JP07169471-A   ;  JP07288133-A   ;  JP10255811-A   YOYU TANSANENGATA NERYO DENCHI HATSUDEN (YOYU-Non-standard)   OTSU S,  TAKEUCHI M,  MIHANA T,  TAKAHASHI C;  JP61193373-A   MITSUBISHI DENKI KK (MITQ)   MATSUMURA M,  OKADA T,  KOTOGAMI Y;  JP63310574-A   TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOGA-Non-standard);  MITSUBICHI ELEC CORP (MITQ)   KANEKO S,  MORI Y,  NAKAGAWA S,  TANAKA T;  US5114803-A   NGK INSULATORS LTD (NIGA)   ISHIHARA T,  FUJITA T,  MISAWA H;  US5912088-A   PLUG POWER LLC (PLUG-Non-standard)   ERNST W D;  US5985476-A   GAS RES INST (GASR-Non-standard)   LOWE D M,  POUND B G,  WACHSMAN E D,  JAYAWEERA P;  US6033794-A   US DEPT ENERGY (USAT)   GEORGE T J,  SMITH W C;  US6051173-A   INT BUSINESS MACHINES CORP (IBMC)   FASANO B V,  PRETTYMAN K M;  US6051329-A   INT BUSINESS MACHINES CORP (IBMC)   FASANO B V,  PRETTYMAN K M;  US20020107140-A1   ;  US6228521-B1   UNIV UTAH RES FOUND (UTAH)   KIM J,  FUNG K,  VIRKAR A V;  US6287716-B1   MITSUBISHI MATERIALS CORP (MITV)   HASHIMOTO I,  KOMADA N,  ADACHI K;  US6365293-B1   SANYO ELECTRIC CO LTD (SAOL)   ISONO T,  MIYAKE Y,  HAMADA A,  KANEKO M,  NAKATO K;  US6376117-B1   SOFCO LP (SOFC-Non-standard)   KANTAK M V,  CABLE T L;  US6444602-B1   DE NORA SPA (ORON)   DEMARINIS M,  DE CASTRO E S,  ALLEN R J,  SHAIKH K;  US6933067-B2   TOYOTA JIDOSHA KK (TOYT)   KAWAHARA T,  KINOSHITA K,  KINO Y,  OZAKI T;  JP4279156-B2 -- JP03222261-A   ;  JP07085874-A   ;  JP07169471-A   ;  JP07288133-A   ;  JP10255811-A   YOYU TANSANENGATA NERYO DENCHI HATSUDEN (YOYU-Non-standard)   OTSU S,  TAKEUCHI M,  MIHANA T,  TAKAHASHI C;  JP61193373-A   MITSUBISHI DENKI KK (MITQ)   MATSUMURA M,  OKADA T,  KOTOGAMI Y;  JP63310574-A   TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOGA-Non-standard);  MITSUBICHI ELEC CORP (MITQ)   KANEKO S,  MORI Y,  NAKAGAWA S,  TANAKA T;  JP2002042823-A   TOYOTA JIDOSHA KK (TOYT)   KAWAHARA T,  KINOSHITA K,  KINO Y,  OZAKI T