EP743092-A1 -- EP164200-A   STANDARD OIL CO OHIO (STAH);  STANDARD OIL CO INDIANA (STAD);  HARRIS J H (HARR-Individual)   HARRIS J H,  GRASSELLI R K,  TENHOVER M A,  WARD M D;  EP329626-A   TANAKA KIKINZOKU KOGYO KK (TANI)   TSURUMI K,  NAKAMURA T,  SATO A;  EP694982-A1   DEGUSSA AG (DEGS)   BRAND R,  FREUND A,  LANG J,  LEHMANN T,  OHMER J,  TACKE T,  HEINZ G,  SCHWARZ R;  US4186110-A   UNITED TECHNOLOGIES CORP (UNAC)   JALAN V M,  LANDSMAN D A;  WO1991019566-A   ;  DE19517598-C1 -- DE2926615-C   UNITED TECHNOLOGIES CORP (UNAC)   JALAN V M,  LANDSMAN D A;  US4186110-A   UNITED TECHNOLOGIES CORP (UNAC)   JALAN V M,  LANDSMAN D A;  US5767036-A -- DE2926615-A   UNITED TECHNOLOGIES CORP (UNAC)   JALAN V M,  LANDSMAN D A;  EP164200-A   STANDARD OIL CO OHIO (STAH);  STANDARD OIL CO INDIANA (STAD);  HARRIS J H (HARR-Individual)   HARRIS J H,  GRASSELLI R K,  TENHOVER M A,  WARD M D;  EP329626-A   TANAKA KIKINZOKU KOGYO KK (TANI)   TSURUMI K,  NAKAMURA T,  SATO A;  US3309231-A   ;  US3364072-A   ;  US3762957-A   ;  US3840471-A   JOHNSON MATTHEY CO LTD (JOHO);  US4186110-A   UNITED TECHNOLOGIES CORP (UNAC)   JALAN V M,  LANDSMAN D A;  US4192907-A   UNITED TECHNOLOGIES CORP (UNAC)   JALAN V M,  LANDSMAN D A,  LEE J M;  US4316944-A   UNITED TECHNOLOGIES CORP (UNAC)   LANDSMAN D A,  LUCZAK F J;  US4794054-A   NIPPON ENGELHARD KK (ENGH)   ITO T,  MATSUZAWA S,  KATO K;  US4954474-A   TANAKA KIKINZOKU KOGYO KK (TANI)   TSURUMI K,  NAKAMURA T,  SATO A;  US5013618-A   INT FUEL CELLS CORP (ITFU)   LUCZAK F J;  US5024905-A   NE CHEMCAT CORP (NECH-Non-standard)   ITOH T,  KATOH K;  US5096866-A   NE CHEMCAT CORP (NECH-Non-standard)   ITOH T,  KATO K;  US5189005-A   TANAKA KIKINZOKU KOGYO KK (TANI);  STONEHART ASSOC INC (STON-Non-standard)   WATANABE M,  STONEHART P,  TSURUMI K,  YAMAMOTO N,  HARA N,  NAKAMURA T;  US5489563-A   DEGUSSA AG (DEGS)   BRAND R,  FREUND A,  LANG J,  LEHMANN T,  OHMER J,  TACKE T,  HEINZ G,  SCHWARZ R;  JP2880450-B2 -- JP03127459-A   ;  JP55024595-A   UNITED TECHNOLOGIES CORP (UNAC)   JALAN V M,  LANDSMAN D A;  EP743092-B1 -- EP164200-A   STANDARD OIL CO OHIO (STAH);  STANDARD OIL CO INDIANA (STAD);  HARRIS J H (HARR-Individual)   HARRIS J H,  GRASSELLI R K,  TENHOVER M A,  WARD M D;  EP329626-A   TANAKA KIKINZOKU KOGYO KK (TANI)   TSURUMI K,  NAKAMURA T,  SATO A;  EP694982-A1   DEGUSSA AG (DEGS)   BRAND R,  FREUND A,  LANG J,  LEHMANN T,  OHMER J,  TACKE T,  HEINZ G,  SCHWARZ R;  US4186110-A   UNITED TECHNOLOGIES CORP (UNAC)   JALAN V M,  LANDSMAN D A;  WO1991019566-A