WO9805914-A -- DE3441622-A   MORRIS J R (MORR-Individual)   MORRIS J R;  DE4206007-A   SPERLING F (SPER-Individual)   NORMANN A,  SPERLING F;  EP543581-A   FOSECO INT LTD (FOSE)   CHADWICK R,  SIVITER C,  FARMER A D;  EP639436-A   NGK INSULATORS LTD (NIGA)   IDEGUCHI Y,  TSUNEKAWA K,  KATO N;  FR2586093-A   TOSHIBA CERAMICS CO (TOSF);  GB2216115-A   DURIRON CO INC (DURR)   HELFERICH R L,  SCHENCK R C;  US4693918-A   TOSHIBA CERAMICS CO (TOSF);  WO9805914-A1 -- DE3441622-A   MORRIS J R (MORR-Individual)   MORRIS J R;  DE4206007-A1   SPERLING F (SPER-Individual)   NORMANN A,  SPERLING F;  EP543581-A1   FOSECO INT LTD (FOSE)   CHADWICK R,  SIVITER C,  FARMER A D;  EP639436-A1   NGK INSULATORS LTD (NIGA)   IDEGUCHI Y,  TSUNEKAWA K,  KATO N;  FR2586093-A   TOSHIBA CERAMICS CO (TOSF);  GB2216115-A   DURIRON CO INC (DURR)   HELFERICH R L,  SCHENCK R C;  US4693918-A   TOSHIBA CERAMICS CO (TOSF);  NL1003755-C2 -- DE3441622-A   MORRIS J R (MORR-Individual)   MORRIS J R;  DE3441622-C2   MORRIS J R (MORR-Individual)   MORRIS J R;  DE4206007-A1   SPERLING F (SPER-Individual)   NORMANN A,  SPERLING F;  EP543581-A1   FOSECO INT LTD (FOSE)   CHADWICK R,  SIVITER C,  FARMER A D;  EP639436-A1   NGK INSULATORS LTD (NIGA)   IDEGUCHI Y,  TSUNEKAWA K,  KATO N;  EP639436-B1   NGK INSULATORS LTD (NIGA)   IDEGUCHI Y,  TSUNEKAWA K,  KATO N;  FR2586093-A   TOSHIBA CERAMICS CO (TOSF);  GB2216115-A   DURIRON CO INC (DURR)   HELFERICH R L,  SCHENCK R C;  GB2216115-B   DURIRON CO INC (DURR)   HELFERICH R L,  SCHENCK R C;  US4693918-A   TOSHIBA CERAMICS CO (TOSF);  EP958480-B1 -- DE3441622-A   MORRIS J R (MORR-Individual)   MORRIS J R;  DE4206007-A   SPERLING F (SPER-Individual)   NORMANN A,  SPERLING F;  EP543581-A   FOSECO INT LTD (FOSE)   CHADWICK R,  SIVITER C,  FARMER A D;  EP639436-A   NGK INSULATORS LTD (NIGA)   IDEGUCHI Y,  TSUNEKAWA K,  KATO N;  FR2586093-A   TOSHIBA CERAMICS CO (TOSF);  GB2216115-A   DURIRON CO INC (DURR)   HELFERICH R L,  SCHENCK R C;  US4693918-A   TOSHIBA CERAMICS CO (TOSF)