WO200049672-A1 -- US3488226-A   INST GAS TECHNOLOGY (IGTE);  US4647516-A   MITSUBISHI DENKI KK (MITQ)   MATSUMURA M,  OKADA T,  KOTOGAMI Y;  US4877693-A   ENERGY RES CORP (ENER-Non-standard)   BAKER B S;  US4983470-A   MITSUBISHI DENKI KK (MITQ)   KIMURA H,  SATO K,  MATSUMURA M,  HIRAI C;  US5175062-A   ENERGY RES CORP (ENER-Non-standard)   FAROOQUE M,  LAMBRECH M,  ALLEN J;  US5660941-A   ENERGY RES CORP (ENER-Non-standard)   ALLEN J,  FAROOQUE M,  PATEL P S;  US6200696-B1 -- US3488226-A   INST GAS TECHNOLOGY (IGTE);  US4647516-A   MITSUBISHI DENKI KK (MITQ)   MATSUMURA M,  OKADA T,  KOTOGAMI Y;  US4788110-A   ENERGY RES CORP (ENER-Non-standard)   BERNARD R;  US4873155-A   FUJI ELECTRIC MFG CO LTD (FJIE)   HIROTA T,  OUCHI T,  YAMAMOTO O;  US4877693-A   ENERGY RES CORP (ENER-Non-standard)   BAKER B S;  US4983470-A   MITSUBISHI DENKI KK (MITQ)   KIMURA H,  SATO K,  MATSUMURA M,  HIRAI C;  US5175062-A   ENERGY RES CORP (ENER-Non-standard)   FAROOQUE M,  LAMBRECH M,  ALLEN J;  US5426002-A   MITSUBISHI DENKI KK (MITQ)   MATSUMURA M,  HIRAI C;  US5470670-A   MATSUSHITA DENKI SANGYO KK (MATU)   GAMO T,  HATOH K,  NIIKURA J,  YASUMOTO E,  HADO K;  US5660941-A   ENERGY RES CORP (ENER-Non-standard)   ALLEN J,  FAROOQUE M,  PATEL P S;  EP1157437-A1 -- US5348814-A   MATSUSHITA ELEC IND CO LTD (MATU)   GAMO T,  HATOH K,  YASUMOTO E,  NIIKURA J,  HADO K,  ADACHI K;  US5733347-A   INT FUEL CELLS CORP (ITFU)   LESIEUR R R;  US5858314-A   ZTEK CORP (ZTEK-Non-standard)   HSU M S,  HOAG E D;  EP1157437-B1 -- US3488226-A   INST GAS TECHNOLOGY (IGTE);  US4647516-A   MITSUBISHI DENKI KK (MITQ)   MATSUMURA M,  OKADA T,  KOTOGAMI Y;  US4877693-A   ENERGY RES CORP (ENER-Non-standard)   BAKER B S;  US4983470-A   MITSUBISHI DENKI KK (MITQ)   KIMURA H,  SATO K,  MATSUMURA M,  HIRAI C;  US5175062-A   ENERGY RES CORP (ENER-Non-standard)   FAROOQUE M,  LAMBRECH M,  ALLEN J;  US5348814-A   MATSUSHITA ELEC IND CO LTD (MATU)   GAMO T,  HATOH K,  YASUMOTO E,  NIIKURA J,  HADO K,  ADACHI K;  US5660941-A   ENERGY RES CORP (ENER-Non-standard)   ALLEN J,  FAROOQUE M,  PATEL P S;  US5733347-A   INT FUEL CELLS CORP (ITFU)   LESIEUR R R;  US5858314-A   ZTEK CORP (ZTEK-Non-standard)   HSU M S,  HOAG E D