;  US6740434-B2 -- DE4243600-A1   EQUOS RES KK (EQUS)   NAKANO N,  AZUMA R,  NAKASHIMA M,  HORIGUCHI M;  EP241432-A   TANAKA KIKINZOKU KOGYO KK (TANI);  FURUYA C (FURU-Individual);  WATANABE M (WATA-Individual)   WATANABE M,  MOTOO S,  FURUYA N;  FR1436154-A   ;  JP02148657-A   ;  JP06188008-A   ;  JP06251779-A   ;  JP54076443-A   ;  JP58004274-A   HITACHI LTD (HITA)   KAWANA H,  HORIBA T,  IWAMOTO K,  FUJITA K,  TAMURA K;  JP58034573-A   HITACHI LTD (HITA)   KAWANA H,  HORIBA T,  IWAMOTO K,  FUJITA K,  TAMURA K;  JP58186170-A   HITACHI LTD (HITA)   HORIBA T,  IWAMOTO K,  KAWANA H,  FUJITA K,  TAMURA K;  JP59209277-A   HITACHI LTD (HITA)   OHARA S,  KANESHIRO T,  TSUKUI T,  SHIMIZU T;  JP60165062-A   ;  JP62208553-A   TANAKA KIKINZOKU KOGYO KK (TANI);  FURUYA C (FURU-Individual);  WATANABE M (WATA-Individual)   WATANABE M,  MOTOO S,  FURUYA N;  JP62296372-A   BASF AG (BADI)   STERZEL H J;  JP63076264-A   ;  US3013098-A   ;  US3013908-A   ;  US3113049-A   ;  US3143440-A   ;  US3368922-A   MONSANTO RES CORP (MONS);  US4262063-A   HITACHI LTD (HITA)   KUDO T,  KIKUCHI G,  OBAYASHI H;  US4390603-A   HITACHI LTD (HITA)   KAWANA H,  HORIBA T,  IWAMOTO K,  FUJITA K,  TAMURA K;  US4407905-A   HITACHI LTD (HITA)   TAKEUCHI S,  KAHARA T,  IMAHASHI J,  TAKEUCHI M,  OKADA H,  OKABE S,  MATSUDA S;  US4420544-A   CALIFORNIA INST OF TECHN (CALY)   LAWSON D D,  INGHAM J D;  US4478917-A   HITACHI LTD (HITA)   FUJITA K,  TAMURA K,  KAWANA H,  IWAMOTO K,  HORIBA T;  US4493878-A   HITACHI LTD (HITA)   HORIBA T,  IWAMOTO K,  KAWANA H,  FUJITA K,  TAMURA K;  US4537840-A   HITACHI LTD (HITA)   TSUKUI T,  SHIMIZU T,  DOI R,  TSUTSUMII Y;  US4562123-A   HITACHI LTD (HITA)   SHIMIZU T,  SATOU T,  TSUKUI T,  DOI R,  YAMAGUCHI M;  US4612261-A   HITACHI LTD (HITA)   TSUKUI T,  SHIMIZU T,  DOI R;  US4629664-A   HITACHI LTD (HITA)   TSUKUI T,  YASUKAWA S;  US4828941-A   BASF AG (BADI)   STERZEL H J;  US4876115-A   US DEPT ENERGY (USAT)   RAISTRICK I D;  US5186877-A   TANAKA KIKINZOKU KOGYO KK (TANI)   WATANABE M;  US5330860-A   DU PONT DE NEMOURS & CO E I (DUPO)   GROT W G,  BANERJEE S;  US5599638-A   UNIV SOUTHERN CALIFORNIA (USCA);  CALIFORNIA INST OF TECHNOLOGY (CALY)   FRANK H A,  NARAYANAN S R,  OLAH G A,  PRAKASH G K S,  SURAMPUDI S,  VAMOS E,  HALPERT G;  US6248460-B1   CALIFORNIA INST OF TECHNOLOGY (CALY)   SURAMPUDI S,  NARAYANAN S R,  VAMOS E,  FRANK H A,  HALPERT G,  OLAH G A,  PRAKASH G K S