EP1285692-A1 -- US3791993-A   HALDOR TOPSOE AS (TOPS);  US3932534-A   KYOWA CHEM (KYOX);  US5714092-A   GASTEC NV (GAST-Non-standard)   VAN LOOIJ F,  GEUS J W;  WO2001025142-A1   ;  US2003047488-A1 -- US3791993-A   HALDOR TOPSOE AS (TOPS);  US3928002-A   JAPAN GASOLINE CO LTD (JAGA);  NIKKI KAGAKU KK (NKKA);  US3932534-A   KYOWA CHEM (KYOX);  US4149998-A   EXXON RES & ENG CO (ESSO);  US4233187-A   UNITED CATALYSTS INC (UNCA-Non-standard)   ATWOOD K,  WRIGHT J H,  MERRIAM J S;  US4473543-A   UNITED TECHNOLOGIES CORP (UNAC)   SETZER H J,  LESIEUR R R,  KARAVOLIS S,  WNUCK W G;  US4906603-A   SUD-CHEMIE AG (SUDC)   BURGFELS G,  KOCHLOEFL K;  US5714092-A   GASTEC NV (GAST-Non-standard)   VAN LOOIJ F,  GEUS J W;  US5872074-A   HYDRO-QUEBEC (QUGO)   SCHULZ R,  LALANDE G,  HUOT J,  DENIS M,  LIANG G,  VAN NESTE A,  GUAY D,  DODELET J;  US5997835-A   HALDOR TOPSOE AS (TOPS)   HYLDTOFT J,  NORSKOV J K,  CLAUSEN B S;  US6123913-A   LITTLE INC ARTHUR D (LITT)   CLAWSON L G;  US6416731-B1   HALDOR TOPSOE AS (TOPS)   DOHRUP J,  JACOBSEN C J H,  OLSEN C;  US6423665-B1   SEKIYU SHIGEN KAIHATSU KK (SEKI-Non-standard)   OKADO H,  WAKATSUKI T,  INABA K,  HIRANO H;  US6605376-B2   KADMOS AE EPENDYTIKON PROTOVOULION (KADM-Non-standard);  VERYKIOS X (VERY-Individual)   VERYKIOS X;  US6953488-B2   BP AMOCO CORP (BRPE)   BHATTACHARYYA A,  CHANG W;  US2007021299-A1 -- US3791993-A   HALDOR TOPSOE AS (TOPS);  US3928002-A   JAPAN GASOLINE CO LTD (JAGA);  NIKKI KAGAKU KK (NKKA);  US3932534-A   KYOWA CHEM (KYOX);  US4149998-A   EXXON RES & ENG CO (ESSO);  US4233187-A   UNITED CATALYSTS INC (UNCA-Non-standard)   ATWOOD K,  WRIGHT J H,  MERRIAM J S;  US4473543-A   UNITED TECHNOLOGIES CORP (UNAC)   SETZER H J,  LESIEUR R R,  KARAVOLIS S,  WNUCK W G;  US4906603-A   SUD-CHEMIE AG (SUDC)   BURGFELS G,  KOCHLOEFL K;  US5714092-A   GASTEC NV (GAST-Non-standard)   VAN LOOIJ F,  GEUS J W;  US5872074-A   HYDRO-QUEBEC (QUGO)   SCHULZ R,  LALANDE G,  HUOT J,  DENIS M,  LIANG G,  VAN NESTE A,  GUAY D,  DODELET J;  US5997835-A   HALDOR TOPSOE AS (TOPS)   HYLDTOFT J,  NORSKOV J K,  CLAUSEN B S;  US6123913-A   LITTLE INC ARTHUR D (LITT)   CLAWSON L G;  US6416731-B1   HALDOR TOPSOE AS (TOPS)   DOHRUP J,  JACOBSEN C J H,  OLSEN C;  US6423665-B1   SEKIYU SHIGEN KAIHATSU KK (SEKI-Non-standard)   OKADO H,  WAKATSUKI T,  INABA K,  HIRANO H;  US6605376-B2   KADMOS AE EPENDYTIKON PROTOVOULION (KADM-Non-standard);  VERYKIOS X (VERY-Individual)   VERYKIOS X;  US6953488-B2   BP AMOCO CORP (BRPE)   BHATTACHARYYA A,  CHANG W;  JP4098508-B2 -- JP11276893-A   ;  JP50004001-A   KYOWA CHEM (KYOX);  JP73013828-B   HALDOR FREDERIK AXEL TOPS (TOP-Individual);  TOPSOE H F A (TOPS-Individual);  JP09502414-W   ;  WO2001025142-A1