;  GB2178019-A -- GB1289081-A   CHELYABINSKY ORD LEN ELEK (CHE-Non-standard);  GB1431891-A   FOSECO INT LTD (FOSE);  FR2585187-A -- DE2165029-A   KUREHA KAGAKU KOGYO KK (KURE);  DE2165029-B   KUREHA KAGAKU KOGYO KK (KURE);  EP86884-A   ;  EP162976-A   OJI PAPER CO (OJIP)   AWATA Y,  IWAKI O;  EP162976-B   OJI PAPER CO (OJIP)   AWATA Y,  IWAKI O;  FR1462632-A   ;  FR2143654-A   SIGRI ELEKTROGRAPHIT GMBH (SIGE);  FR2177390-A   FOSECO INT LTD (FOSE);  GB429840-A   ;  GB1289081-A   CHELYABINSKY ORD LEN ELEK (CHE-Non-standard);  US3649196-A   ;  US4938942-A -- EP86884-A   ;  EP127887-A   ;  EP162976-A   OJI PAPER CO (OJIP)   AWATA Y,  IWAKI O;  GB429840-A   ;  GB1289081-A   CHELYABINSKY ORD LEN ELEK (CHE-Non-standard);  GB1431891-A   FOSECO INT LTD (FOSE);  JP59187623-A   OJI PAPER CO (OJIP)   AWATA Y,  SAKAINO M;  US3616045-A   TATABANYAI ALUMINIUM KOHO (TATA);  US3639140-A   NITTO BOSEKI CO LTD (NITO);  US3649196-A   ;  US3726737-A   NIPPON OIL SEAL IND CO LT (NIOC);  US4041116-A   GREAT LAKES CARBON CORP (GREL)   BAUD M F,  HARVEY J A;  US4064207-A   UNITED TECHNOLOGIES CORP (UNAC)   DECRESCENTE M A,  LAYDEN G K,  PIKE R A;  US4064322-A   UNITED TECHNOLOGIES CORP (UNAC)   BUSHNELL C L,  KUNZ H R;  US4067955-A   ;  US4080413-A   ;  US4115528-A   UNITED TECHNOLOGIES CORP (UNAC)   CHRISTNER L G,  NAGLE D C,  WATSON P R;  US4165349-A   UNITED TECHNOLOGIES CORP (UNAC)   SANDELLI G J;  US4173662-A   UNITED TECHNOLOGIES CORP (UNAC)   STEWART R C;  US4185131-A   UNITED TECHNOLOGIES CORP (UNAC)   GOLLER G J,  PETRAGLIA V J,  DEWS G;  US4185145-A   UNITED TECHNOLOGIES CORP (UNAC)   BREAULT R D;  US4219611-A   UNITED TECHNOLOGIES CORP (UNAC)   BREAULT R D;  US4226816-A   ;  US4233369-A   UNITED TECHNOLOGIES CORP (UNAC)   BREAULT R D,  ROETHLEIN R J,  CONGDON J V;  US4245009-A   UNITED TECHNOLOGIES CORP (UNAC)   GUTHRIE R J;  US4259389-A   ;  US4269642-A   UNITED TECHNOLOGIES CORP (UNAC)   DECASPERIS A J,  ROETHLEIN R J,  BREAULT J D;  US4279970-A   ;  US4287232-A   UNITED TECHNOLOGIES CORP (UNAC)   GOLLER G J,  SALONIA J R;  US4313972-A   UNITED TECHNOLOGIES CORP (UNAC)   GOLLER G J,  SALONIA J R;  US4360485-A   UNITED TECHNOLOGIES CORP (UNAC)   EMANUELSON R C,  LUOMA W L,  TAYLOR W A;  US4365008-A   UNITED TECHNOLOGIES CORP (UNAC)   DECASPERIS J,  ROETHLEIN R J,  BREAULT R D;  US4374906-A   UNITED TECHNOLOGIES CORP (UNAC);  US4376029-A   GREAT LAKES CARBON CORP (GREL)   JOO L A,  TUCKER K W,  MCCOWN F E;  US4396480-A   GRACE & CO W R (GRAC)   HEGEDUS L,  LUNDSAGER C B;  US4409125-A   ;  US4426340-A   UNITED TECHNOLOGIES CORP (UNAC);  US4507262-A   GENERAL ELECTRIC CO (GENE)   KARAS B R,  BAUMGARTNE C E