EP575883-A1 -- EP404712-A   HALDOR TOPSOE AS (TOPS)   HANSEN T,  JORN E;  EP476610-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  EP404712-A3   HALDOR TOPSOE AS (TOPS)   HANSEN T,  JORN E;  EP476610-A3   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  FR1347306-A   ;  GB2025118-A   ENERGY RES CORP (ENER-Non-standard)   BAKER B S,  DHARIA D J;  JP04114901-A   ;  JP04161244-A   ;  JP61010877-A   ;  JP61019073-A   MITSUBISHI DENKI KK (MITQ)   MATSUMURA M;  JP61171530-A   HITACHI LTD (HITA)   KOYAMA K,  SUGITA N,  SAKAGUCHI H,  SHIINA K,  NOGUCHI Y;  JP63039628-A   ;  JP63295403-A   ASAHI ENG CO LTD (ASAV)   KOIDE K;  US3962411-A   UNITED TECHNOLOGIES CORP (UNAC)   SETZER H J,  STANDLEY W R;  US5346779-A -- EP40712-A   ;  EP476610-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  FR1347306-A   ;  GB2025118-A   ENERGY RES CORP (ENER-Non-standard)   BAKER B S,  DHARIA D J;  JP04161244-A   ;  JP61010877-A   ;  JP61019073-A   MITSUBISHI DENKI KK (MITQ)   MATSUMURA M;  US3962411-A   UNITED TECHNOLOGIES CORP (UNAC)   SETZER H J,  STANDLEY W R;  US4729931-A   WESTINGHOUSE ELECTRIC CORP (WESE)   GRIMBLE R E;  US4812373-A   WESTINGHOUSE ELECTRIC CORP (WESE)   BRIMBLE R E,  SOMERS E V;  US5068159-A   ISHIKAWAJIMA-HARIMA (ISHI)   KINOSHITA N;  US5082751-A   WESTINGHOUSE ELECTRIC CORP (WESE)   REICHNER P;  US5221586-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  EP575883-B1 -- EP404712-A   HALDOR TOPSOE AS (TOPS)   HANSEN T,  JORN E;  EP476610-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  FR1347306-A   ;  GB2025118-A   ENERGY RES CORP (ENER-Non-standard)   BAKER B S,  DHARIA D J;  JP04114901-A   ;  JP04161244-A   ;  JP61019073-A   MITSUBISHI DENKI KK (MITQ)   MATSUMURA M;  JP61171530-A   HITACHI LTD (HITA)   KOYAMA K,  SUGITA N,  SAKAGUCHI H,  SHIINA K,  NOGUCHI Y;  JP63039628-A   ;  JP63295403-A   ASAHI ENG CO LTD (ASAV)   KOIDE K;  US3962411-A   UNITED TECHNOLOGIES CORP (UNAC)   SETZER H J,  STANDLEY W R