EP1087449-A1 -- EP771037-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   HAMADA S,  MARUKAWA S,  INOUE H,  IKOMA M;  EP771038-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   INOUE H,  HAMADA S,  IKOMA M;  EP962993-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU);  TOYOTA JIDOSHA KK (TOYT)   FUKUDA S,  TAKAKI M,  SATOU K,  IWAMURA R,  YOKOYAMA T;  EP1059680-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU);  TOYOTA JIDOSHA KK (TOYT)   HAMADA S,  INOUE H,  FUJIOKA N,  IKOMA M;  US3844841-A   ENERGY RES CORP (ENER-Non-standard);  US4339049-A   GOULD INC (GOUN);  US DEPT ENERGY (USAT);  US6455190-B1 -- EP962993-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU);  TOYOTA JIDOSHA KK (TOYT)   FUKUDA S,  TAKAKI M,  SATOU K,  IWAMURA R,  YOKOYAMA T;  US3844841-A   ENERGY RES CORP (ENER-Non-standard);  US4693535-A   SAB NIFE AB (SVBR);  FRODE P E (FROD-Individual)   FRODE P E;  EP669663-A1   MATSUSHITA ELEC IND CO LTD (MATU)   HAMADA S,  TAKATA K,  YOKOTA A,  MATSUDA H,  IKOMA M;  EP771037-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   HAMADA S,  MARUKAWA S,  INOUE H,  IKOMA M;  EP771038-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   INOUE H,  HAMADA S,  IKOMA M;  EP1059680-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU);  TOYOTA JIDOSHA KK (TOYT)   HAMADA S,  INOUE H,  FUJIOKA N,  IKOMA M;  JP07161377-A   ;  JP08031398-A   ;  US4339049-A   GOULD INC (GOUN);  US DEPT ENERGY (USAT);  WO1998031059-A1   ;  WO1999021236-A1   ;  EP1087449-B1 -- EP771037-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   HAMADA S,  MARUKAWA S,  INOUE H,  IKOMA M;  EP771038-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   INOUE H,  HAMADA S,  IKOMA M;  EP962993-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU);  TOYOTA JIDOSHA KK (TOYT)   FUKUDA S,  TAKAKI M,  SATOU K,  IWAMURA R,  YOKOYAMA T;  EP1059680-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU);  TOYOTA JIDOSHA KK (TOYT)   HAMADA S,  INOUE H,  FUJIOKA N,  IKOMA M;  US3844841-A   ENERGY RES CORP (ENER-Non-standard);  US4339049-A   GOULD INC (GOUN);  US DEPT ENERGY (USAT);  JP4136223-B2 -- JP65026672-A   ;  JP52145423-U