US2005170226-A1 -- US3753892-A   UNIVERSAL OIL PROD CO (UNVO);  US5677073-A   TOYOTA JIDOSHA KK (TOYT)   KAWATSU S;  US5712052-A   TOYOTA JIDOSHA KK (TOYT)   KAWATSU S;  US5925476-A   TOYOTA JIDOSHA KK (TOYT)   KAWATSU S;  US6083637-A   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   WALZ H F,  ZUR MEGEDE D;  US6165633-A   TOYOTA JIDOSHA KK (TOYT)   NEGISHI Y;  US20040197718-A1   ;  US20060024541-A1   ;  US20060257302-A1   ;  US6429019-B1   QUANTUM GROUP INC (QUAN)   GOLDSTEIN M K,  RYU J,  SCHRAUZER G N,  SCRIPCA L;  US6528191-B1   GENERAL MOTORS CORP (GENK)   SENNER R;  US6555989-B1   BALLARD POWER SYSTEMS INC (BLRD)   PEARSON M T;  US6576359-B2   GENERAL MOTORS CORP (GENK)   FRONK M;  US6630264-B2   HALTINER K J (HALT-Individual);  MIENEY H R (MIEN-Individual)   HALTINER K J,  MIENEY H R;  US6692851-B2   GENERAL MOTORS CORP (GENK)   KESKULA D H,  DOAN T M,  CLINGERMAN B J;  US6740433-B2   GENERAL MOTORS CORP (GENK)   SENNER R;  US6847188-B2   GENERAL MOTORS CORP (GENK)   KESKULA D H,  DOAN T M,  CLINGERMAN B J;  US6884533-B2   BALLARD GENERATION SYSTEMS INC (BALL-Non-standard)   STOCKER W G;  US7159444-B2   PROTON ENERGY SYSTEMS (PROT-Non-standard)   DEMAREST E,  KOOPMAN J,  SCHAEFER N,  STANEK A,  SHIROMA I,  TOMASCO A,  STOCKTON E,  BARBIR F,  ZAGAJA J,  SKOCZYLAS T,  MOULTHROP L;  US7305865-B2 -- US3753892-A   UNIVERSAL OIL PROD CO (UNVO);  US5677073-A   TOYOTA JIDOSHA KK (TOYT)   KAWATSU S;  US5712052-A   TOYOTA JIDOSHA KK (TOYT)   KAWATSU S;  US5925476-A   TOYOTA JIDOSHA KK (TOYT)   KAWATSU S;  US6083637-A   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   WALZ H F,  ZUR MEGEDE D;  US6165633-A   TOYOTA JIDOSHA KK (TOYT)   NEGISHI Y;  US20040197718-A1   ;  US20060024541-A1   ;  US20060257302-A1   ;  US6429019-B1   QUANTUM GROUP INC (QUAN)   GOLDSTEIN M K,  RYU J,  SCHRAUZER G N,  SCRIPCA L;  US6528191-B1   GENERAL MOTORS CORP (GENK)   SENNER R;  US6555989-B1   BALLARD POWER SYSTEMS INC (BLRD)   PEARSON M T;  US6576359-B2   GENERAL MOTORS CORP (GENK)   FRONK M;  US6630264-B2   HALTINER K J (HALT-Individual);  MIENEY H R (MIEN-Individual)   HALTINER K J,  MIENEY H R;  US6692851-B2   GENERAL MOTORS CORP (GENK)   KESKULA D H,  DOAN T M,  CLINGERMAN B J;  US6740433-B2   GENERAL MOTORS CORP (GENK)   SENNER R;  US6847188-B2   GENERAL MOTORS CORP (GENK)   KESKULA D H,  DOAN T M,  CLINGERMAN B J;  US6884533-B2   BALLARD GENERATION SYSTEMS INC (BALL-Non-standard)   STOCKER W G;  US7159444-B2   PROTON ENERGY SYSTEMS (PROT-Non-standard)   DEMAREST E,  KOOPMAN J,  SCHAEFER N,  STANEK A,  SHIROMA I,  TOMASCO A,  STOCKTON E,  BARBIR F,  ZAGAJA J,  SKOCZYLAS T,  MOULTHROP L