US2003064285-A1 -- US5849431-A   SONY CORP (SONY)   KITA Y,  SHIMIZU T,  IWATSU S,  TAKAHASHI H,  KATAYAMA K;  US6139986-A   NGK INSULATORS LTD (NIGA)   NEMOTO H,  KUROKAWA T;  US20020006540-A1   ;  US20030044677-A1   ;  US6268079-B1   JAPAN STORAGE BATTERY CO LTD (NIST)   INOUE T,  KITANO S;  US6579640-B1   SANYO ELECTRIC CO LTD (SAOL)   NAGASE T,  HAMAMATSU T,  INOUE M,  ASANAMU H,  HINOTSU N;  US6399242-B2   NGK INSULATORS LTD (NIGA)   KITOH K,  KUROKAWA T,  NEMOTO H;  US6709786-B2   HONDA MOTOR CO LTD (HOND)   ASAKA A,  MATSUMOTO K,  MATSUOKA T,  YAMAMOTO K,  HASEGAWA O,  IKEO M;  EP1300896-A1 -- CA2342123-A1   NGK INSULATORS LTD (NIGA)   ENOMOTO A,  KAWAMURA K,  KITOH K,  YOSHIDA T;  EP969535-A1   NGK INSULATORS LTD (NIGA)   NEMOTO H,  KUROKAWA T;  EP987778-A1   NGK INSULATORS LTD (NIGA)   NEMOTO H,  KITOH K;  EP1139458-A2   NGK INSULATORS LTD (NIGA)   ENOMOTO A,  KAWAMURA K,  KITOH K,  YOSHIDA T;  US6268079-B1   JAPAN STORAGE BATTERY CO LTD (NIST)   INOUE T,  KITANO S;  WO2001024303-A1   ;  US7175936-B2 -- CA2342123-A1   NGK INSULATORS LTD (NIGA)   ENOMOTO A,  KAWAMURA K,  KITOH K,  YOSHIDA T;  EP987778-A1   NGK INSULATORS LTD (NIGA)   NEMOTO H,  KITOH K;  EP1139458-A2   NGK INSULATORS LTD (NIGA)   ENOMOTO A,  KAWAMURA K,  KITOH K,  YOSHIDA T;  JP11154500-A   ;  US5849431-A   SONY CORP (SONY)   KITA Y,  SHIMIZU T,  IWATSU S,  TAKAHASHI H,  KATAYAMA K;  US6139986-A   NGK INSULATORS LTD (NIGA)   NEMOTO H,  KUROKAWA T;  US20010049054-A1   ;  US20020006540-A1   ;  US20030044677-A1   ;  US6268079-B1   JAPAN STORAGE BATTERY CO LTD (NIST)   INOUE T,  KITANO S;  US6579640-B1   SANYO ELECTRIC CO LTD (SAOL)   NAGASE T,  HAMAMATSU T,  INOUE M,  ASANAMU H,  HINOTSU N;  US6399242-B2   NGK INSULATORS LTD (NIGA)   KITOH K,  KUROKAWA T,  NEMOTO H;  US6709786-B2   HONDA MOTOR CO LTD (HOND)   ASAKA A,  MATSUMOTO K,  MATSUOKA T,  YAMAMOTO K,  HASEGAWA O,  IKEO M;  WO2001024303-A1   ;  JP4433650-B2 -- JP2000003726-A   NGK INSULATORS LTD (NIGA)   KITOH K,  KUROKAWA T,  NEMOTO H;  JP2000164257-A   NGK INSULATORS LTD (NIGA)   NEMOTO H,  KITOH K,  ENOMOTO A;  JP2001057185-A   ;  JP57013326-Y1