EP1801906-A1 -- EP1091436-A1   TOYOTA JIDOSHA KK (TOYT)   ISHIKAWA S;  JP10271706-A   TOYOTA JIDOSHA KK (TOYT)   TOOHATA Y;  JP2002034171-A   ;  US4670702-A   SANYO ELECTRIC CO (SAOL)   YAMADA M,  TSUKAMOTO K;  US5789092-A   NESTE OY (NESO)   SPIERS D J,  LEPPAENEN J R;  US20040144579-A1   ;  US2007231626-A1 -- US4670702-A   SANYO ELECTRIC CO (SAOL)   YAMADA M,  TSUKAMOTO K;  US5789092-A   NESTE OY (NESO)   SPIERS D J,  LEPPAENEN J R;  US20040144579-A1   ;  US20040197610-A1   ;  US20060040149-A1   ;  US7550942-B2 -- DE10328582-A1   HONDA GIKEN KOGYO KK (HOND)   KUBOTA S,  MATSUOKA T,  MITA Y;  EP1091436-A1   TOYOTA JIDOSHA KK (TOYT)   ISHIKAWA S;  EP1132251-A1   YAMAHA HATSUDOKI KK (YMHA)   YAMADA T,  SAITO M;  EP1164049-A1   HONDA GIKEN KOGYO KK (HOND)   HIRAYAMA S,  YAMASHITA N,  ISENO M,  TORIYAMA M,  IGARASHI M;  EP1251022-A1   YAMAHA MOTOR CO LTD (YMHA)   MIZUNO Y,  KURANISHI M;  EP1389552-A1   YAMAHA HATSUDOKI KK (YMHA)   KOHDA H,  KOIZUMI A,  OKAMOTO I,  NAGASE T,  TERADA J;  EP1398263-A1   ASIA PACIFIC FUEL CELL TECHNOLOGIES LTD (ASPA-Non-standard)   YANG J Y S,  YANG T,  HSU Y;  EP1533173-A2   HONDA MOTOR CO LTD (HOND)   HORII Y;  FR2875749-A1   ;  JP08119180-A   ;  JP10271706-A   TOYOTA JIDOSHA KK (TOYT)   TOOHATA Y;  JP2000243418-A   TOYOTA JIDOSHA KK (TOYT)   NONOBE Y;  JP2001130468-A   YAMAHA MOTOR CO LTD (YMHA)   KURANISHI M;  JP2002034171-A   ;  JP2002313388-A   HONDA MOTOR CO LTD (HOND)   MURAKAMI G,  UEHARA J,  IMAZEKI M;  JP2002362470-A   YAMAHA MOTOR CO LTD (YMHA)   MIZUNO Y,  SAITO M,  KURANISHI M;  JP2005104494-A   ;  JP2005112095-A   ;  US4670702-A   SANYO ELECTRIC CO (SAOL)   YAMADA M,  TSUKAMOTO K;  US5193635-A   YAMAHA HATSUDOKI KK (YMHA)   MIZUNO Y,  HANAJIMA T,  MATSUBARA H;  US5789092-A   NESTE OY (NESO)   SPIERS D J,  LEPPAENEN J R;  US6155369-A   WHITTAKER R W (WHIT-Individual);  US20020039674-A1   ;  US20020192520-A1   ;  US20030094324-A1   ;  US20040050606-A1   ;  US20040144579-A1   ;  US20040197610-A1   ;  US20050053814-A1   ;  US20060040149-A1   ;  US20070084654-A1   ;  US20070092764-A1   ;  US20070166584-A1   ;  US20070248857-A1   ;  US20080093148-A1   ;  US6326765-B1   VECTRIX CORP (VECT-Non-standard)   HUGHES P S,  BALDWIN J D;  US6500573-B1   TOYOTA CHUO KENKYUSHO KK (TOYW)   SHIMAZU T,  AOKI H,  WAKASUGI T,  ASAOKA M,  HIROSHIMA K,  OYA Y,  YAMADA K;  WO2005099016-A2   NISSAN MOTOR CO LTD (NSMO)   FUKUDA T