WO9967018-A1 -- US4181503-A   UNITED TECHNOLOGIES CORP (UNAC)   LESIEUR R R,  SETZER H J,  HAWKINS J R;  US4273748-A   ;  US4379036-A   UNITED TECHNOLOGIES CORP (UNAC)   KUNZ H R,  DAMIANO P J,  LUCZAK F J;  US4522802-A   UNITED TECHNOLOGIES CORP (UNAC)   SETZER H J,  LESIEUR R R,  BETT J A S;  US4746329-A   ENERGY RES CORP (ENER-Non-standard)   CHRISTNER L G,  KOEHLER S A,  STEINFELD G;  US4816040-A   INT FUEL CELLS CORP (ITFU);  TOSHIBA KK (TOKE)   BONVILLE L J,  SEDERQUIST R A,  GRASSO A P;  US4865926-A   INT FUEL CELLS CORP (ITFU)   LEVY A H,  WERTHEIM R J;  US5026536-A   NIPPON OIL KK (NIOC);  PETROLEUM ENERGY CENTER (PETR-Non-standard);  ZH SEIKIYU SANGYO KASSEI (SEKI-Non-standard)   SHIOIRI T,  SATAKE S,  SEKIDO Y,  FUJISOU T,  OBUCHI A,  KATO H;  US5271916-A   GENERAL MOTORS CORP (GENK)   GUANTE J,  VANDERBORGH N E,  NGUYEN T V;  US5292428-A   DAVY MCKEE LONDON LTD (POGC)   HARRISON G E,  MCKINLEY D H,  DENNIS A J;  US5516344-A   INT FUEL CELLS CORP (ITFU)   CORRIGAN T J;  US5686196-A   WESTINGHOUSE ELECTRIC CORP (WESE)   GEORGE R A,  SINGH P;  US5747185-A   ZTEK CORP (ZTEK-Non-standard)   HSU M S;  US5853674-A   INT FUEL CELLS CORP (ITFU)   LESIEUR R R;  US5882614-A   EXXON RES & ENG CO (ESSO)   O'CONNOR R P,  SAY G R,  TAYLOR J H,  GLASS J P;  US6156084-A -- EP913357-A1   NGK INSULATORS LTD (NIGA)   ABE F;  JP06013093-A   ;  US3728413-A   PETRO-TEX- CHEMICAL CORP (PETX);  US4181503-A   UNITED TECHNOLOGIES CORP (UNAC)   LESIEUR R R,  SETZER H J,  HAWKINS J R;  US4333992-A   UNITED TECHNOLOGIES CORP (UNAC)   HEALY H C;  US4522802-A   UNITED TECHNOLOGIES CORP (UNAC)   SETZER H J,  LESIEUR R R,  BETT J A S;  US4746329-A   ENERGY RES CORP (ENER-Non-standard)   CHRISTNER L G,  KOEHLER S A,  STEINFELD G;  US4865926-A   INT FUEL CELLS CORP (ITFU)   LEVY A H,  WERTHEIM R J;  US5057473-A   NAT AERO & SPACE ADMIN (USAS)   VOECKS G E,  SHARMA P;  US5110559-A   HITACHI LTD (HITA)   KONDO Y,  AMANO Y,  KIMURA S,  HORIUCHI S;  US5187025-A   ANALYTIC POWER CORP (ANAL-Non-standard)   KELLAND J W,  BRAUN S G;  US5686196-A   WESTINGHOUSE ELECTRIC CORP (WESE)   GEORGE R A,  SINGH P;  US5853674-A   INT FUEL CELLS CORP (ITFU)   LESIEUR R R;  US5882614-A   EXXON RES & ENG CO (ESSO)   O'CONNOR R P,  SAY G R,  TAYLOR J H,  GLASS J P;  US5938800-A   MCDERMOTT TECHNOLOGY INC (MCDE-Non-standard)   VERRILL C L,  MCILROY R A,  PRIVETTE R M,  CHANEY L J,  KNEIDEL K E;  US6159256-A -- US4923836-A   UNION OIL CO CALIFORNIA (UNOC)   KOKAYEFF P,  ABDO S F;  US5114562-A   UOP (UNVO)   HAUN E C,  THOMPSON G J,  GORAWARA J K,  SULLIVAN D K;  US5507939-A   UOP (UNVO)   ZMICH J,  WHITSURA F R,  PEER R L,  LOW C D,  RUSS M B;  US5882614-A   EXXON RES & ENG CO (ESSO)   O'CONNOR R P,  SAY G R,  TAYLOR J H,  GLASS J P;  EP1119407-A1 -- EP398251-A   OSAKA GAS CO LTD (OSAG)   OKADA O,  TABATA T,  MASUDA M;  US5360536-A   UOP (UNVO)   HOLMGREN J S,  KULPRATHIPANJA S,  ARENA B J,  NEMETH L T