;  DE10247765-A1 -- DE10055613-A1   XCELLSIS GMBH (XCEL-Non-standard)   BONEBERG S,  HOEGER T,  SCHONERT M;  US3982910-A   NAT AERO & SPACE ADMIN (USAS);  US4381187-A   UNITED TECHNOLOGIES CORP (UNAC)   SEDERQUIST R A;  US6045772-A   INT FUEL CELLS LLC (ITFU)   SZYDLOWSKI D F,  SEDERQUIST R A;  WO2004035188-A1 -- DE19650559-C1   MTU FRIEDRICHSHAFEN GMBH (MOTU)   DANCKERT B,  DORNER W,  GUTH T,  REMMELS W;  SU1020697-A   UFA AVIATION INST (UFAV)   AKHMETSHIN R M,  BAIKOV A Z,  BAKIROV F G;  WO200153675-A2   BOSCH GMBH ROBERT (BOSC)   NAU M,  RUOFF M,  BAREIS M,  ILGNER F,  HARNDORF H;  EP1567253-B1 -- DE19650559-C1   MTU FRIEDRICHSHAFEN GMBH (MOTU)   DANCKERT B,  DORNER W,  GUTH T,  REMMELS W;  SU1020697-A   UFA AVIATION INST (UFAV)   AKHMETSHIN R M,  BAIKOV A Z,  BAKIROV F G;  WO200153675-A   BOSCH GMBH ROBERT (BOSC)   NAU M,  RUOFF M,  BAREIS M,  ILGNER F,  HARNDORF H;  JP4427449-B2 -- JP74014009-B1   ;  JP2000063105-A   HONDA MOTOR CO LTD (HOND);  JP2000191304-A   ISHIKAWAJIMA HARIMA HEAVY IND (ISHI);  JP2001354402-A   TOYOTA JIDOSHA KK (TOYT)   INOUE M;  JP2002523862-A   INT FUEL CELLS LLC (ITFU)   SZYDLOWSKI D F,  SEDERQUIST R A;  US8297537-B2 -- DE10055613-A1   XCELLSIS GMBH (XCEL-Non-standard)   BONEBERG S,  HOEGER T,  SCHONERT M;  DE19650559-A1   MTU FRIEDRICHSHAFEN GMBH (MOTU)   DANCKERT B,  DORNER W,  GUTH T,  REMMELS W;  JP2000063105-A   HONDA MOTOR CO LTD (HOND);  JP2000191304-A   ISHIKAWAJIMA HARIMA HEAVY IND (ISHI);  JP2001354402-A   TOYOTA JIDOSHA KK (TOYT)   INOUE M;  SU1020697-A   UFA AVIATION INST (UFAV)   AKHMETSHIN R M,  BAIKOV A Z,  BAKIROV F G;  US1631771-A   ;  US3913845-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  US3971847-A   NAT AERO & SPACE ADMIN (USAS);  US ENERGY R & D ADMIN (USAT);  US3982910-A   NAT AERO & SPACE ADMIN (USAS);  US4381187-A   UNITED TECHNOLOGIES CORP (UNAC)   SEDERQUIST R A;  US4383649-A   ZINK CO JOHN (ZINJ)   REED R D,  MARTIN R R,  GOODNIGHT H E;  US6045772-A   INT FUEL CELLS LLC (ITFU)   SZYDLOWSKI D F,  SEDERQUIST R A;  US6872379-B2   SULZER HEXIS AG (SULZ)   ZAEHRINGER T,  SCHULER A;  US2003077210-A1   BOSCH GMBH ROBERT (BOSC)   NAU M,  RUOFF M,  BAREIS M,  ILGNER F,  HARNDORF H;  WO200153675-A3   BOSCH GMBH ROBERT (BOSC)   NAU M,  RUOFF M,  BAREIS M,  ILGNER F,  HARNDORF H