WO2003017403-A1 -- EP1139475-A2   XCELLSIS GMBH (XCEL-Non-standard)   BELSCHNER W,  BLUM J,  KAUFMANN L;  EP1207578-A2   HONDA GIKEN KOGYO KK (HOND)   AOYAGI S,  SAEKI H,  HASEGAWA Y,  KOTAKA K;  JP59111270-A   ;  JP59111273-A   ;  JP62061954-A   ;  JP63045763-A   ;  DE10140603-A1 -- DE10002006-A1   BOSCH GMBH ROBERT (BOSC)   RUOFF M,  NAU M,  BAREIS M,  ILGNER F,  HARNDORF H;  DE19956225-A1   VAILLANT GMBH & CO JOH (VAIL)   BERG J,  BIELSKI M,  HOCKER T,  KEHL R,  PAULUS J,  RO S,  SCHUERHOLZ J,  WAGNER K;  US5432710-A   OSAKA GAS CO LTD (OSAG)   ISHIMARU K,  NAKASHIBA A,  KOGA M,  OHNISHI H,  KAWAHARA H;  US2005008905-A1 -- US5432710-A   OSAKA GAS CO LTD (OSAG)   ISHIMARU K,  NAKASHIBA A,  KOGA M,  OHNISHI H,  KAWAHARA H;  US5658681-A   AISIN AW CO LTD (AISW);  EQUOS RES KK (EQUS)   SATO M,  SHIRAISHI K;  US20020114986-A1   ;  DE10297104-B4 -- DE10018081-A1   ;  DE10056843-A1   PLUG POWER LLC (PLUG-Non-standard)   LACY R A;  DE19540824-A1   DAIMLER-BENZ AG (DAIM);  DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   SONNTAG J,  LORENZ H;  DE4322765-C1   DAIMLER-BENZ AG (DAIM)   LORENZ H,  NOREIKAT K,  KLAIBER T,  FLECK W,  SONNTAG J,  HORNBURG G,  GAULHOFER A;  DE19640808-C1   SIEMENS AG (SIEI)   STUEHLER W,  STENGER H,  KEIM M;  EP771981-A2   ;  EP1207578-A2   HONDA GIKEN KOGYO KK (HOND)   AOYAGI S,  SAEKI H,  HASEGAWA Y,  KOTAKA K;  JP59111270-A   ;  JP59111273-A   ;  US5432710-A   OSAKA GAS CO LTD (OSAG)   ISHIMARU K,  NAKASHIBA A,  KOGA M,  OHNISHI H,  KAWAHARA H;  US7422809-B2 -- DE10002006-A1   BOSCH GMBH ROBERT (BOSC)   RUOFF M,  NAU M,  BAREIS M,  ILGNER F,  HARNDORF H;  DE19956225-A1   VAILLANT GMBH & CO JOH (VAIL)   BERG J,  BIELSKI M,  HOCKER T,  KEHL R,  PAULUS J,  RO S,  SCHUERHOLZ J,  WAGNER K;  EP1139475-A2   XCELLSIS GMBH (XCEL-Non-standard)   BELSCHNER W,  BLUM J,  KAUFMANN L;  EP1207578-A2   HONDA GIKEN KOGYO KK (HOND)   AOYAGI S,  SAEKI H,  HASEGAWA Y,  KOTAKA K;  JP59111270-A   ;  JP59111273-A   ;  JP62061954-A   ;  JP63045763-A   ;  US5432710-A   OSAKA GAS CO LTD (OSAG)   ISHIMARU K,  NAKASHIBA A,  KOGA M,  OHNISHI H,  KAWAHARA H;  US5658681-A   AISIN AW CO LTD (AISW);  EQUOS RES KK (EQUS)   SATO M,  SHIRAISHI K;  US20020114986-A1