WO9935104-A1 -- US3707589-A   ;  US4263381-A   FORD MOTOR CO LTD (FORD);  US DEPT ENERGY (USAT)   MCENTIRE B J,  VIRKER A V;  US4294898-A   ;  US5137853-A   NGK INSULATORS LTD (NIGA)   ICHIKAWA S,  TAKAHASHI T;  US5415127-A   ONTARIO CENT MATERIALS RES (ONTA-Non-standard)   NICHOLSON P S,  TAN A,  KUO C K;  EP973700-A1 -- EP110712-A   ;  EP545438-A1   ;  EP494362-A2   ROCKWELL INT CORP (ROCW)   MORGAN P E D,  MARSHALL D B;  EP494362-A3   ROCKWELL INT CORP (ROCW)   MORGAN P E D,  MARSHALL D B;  GB2131410-A   ;  JP05026841-A   ;  US6117807-A -- US3655845-A   TOYOTA CHUO KENKYUSHO KK (TOYW);  US3707589-A   ;  US4263381-A   FORD MOTOR CO LTD (FORD);  US DEPT ENERGY (USAT)   MCENTIRE B J,  VIRKER A V;  US4294898-A   ;  US4358516-A   ROCKWELL INT CORP (ROCW)   LANGE F F;  US5137853-A   NGK INSULATORS LTD (NIGA)   ICHIKAWA S,  TAKAHASHI T;  US5415127-A   ONTARIO CENT MATERIALS RES (ONTA-Non-standard)   NICHOLSON P S,  TAN A,  KUO C K;  US6537940-B1 -- US4358516-A   ROCKWELL INT CORP (ROCW)   LANGE F F;  US6117807-A   MATERIALS & SYSTEMS RES INC (MATE-Non-standard)   VIRKAR A V,  JUE J,  FUNG K;  US6632763-B2 -- US3655845-A   TOYOTA CHUO KENKYUSHO KK (TOYW);  US3707589-A   ;  US4263381-A   FORD MOTOR CO LTD (FORD);  US DEPT ENERGY (USAT)   MCENTIRE B J,  VIRKER A V;  US4294898-A   ;  US4358516-A   ROCKWELL INT CORP (ROCW)   LANGE F F;  US5137853-A   NGK INSULATORS LTD (NIGA)   ICHIKAWA S,  TAKAHASHI T;  US5415127-A   ONTARIO CENT MATERIALS RES (ONTA-Non-standard)   NICHOLSON P S,  TAN A,  KUO C K;  US6117807-A   MATERIALS & SYSTEMS RES INC (MATE-Non-standard)   VIRKAR A V,  JUE J,  FUNG K;  EP973700-B1 -- EP110712-A   ;  EP545438-A1   ;  EP494362-A2   ROCKWELL INT CORP (ROCW)   MORGAN P E D,  MARSHALL D B;  GB2131410-A   ;  JP05026841-A   ;  US3707589-A   ;  US4263381-A   FORD MOTOR CO LTD (FORD);  US DEPT ENERGY (USAT)   MCENTIRE B J,  VIRKER A V;  US4294898-A   ;  US5137853-A   NGK INSULATORS LTD (NIGA)   ICHIKAWA S,  TAKAHASHI T;  US5415127-A   ONTARIO CENT MATERIALS RES (ONTA-Non-standard)   NICHOLSON P S,  TAN A,  KUO C K;  JP4434321-B2 -- JP01270565-A   ;  JP51013814-A