US2004047800-A1 -- US4293315-A   UNITED TECHNOLOGIES CORP (UNAC)   SEDERQUIST R A;  US4642272-A   INTER FUEL CELLS CO (ITFU-Non-standard)   SEDERQUIST R A;  US4650727-A   US DEPT ENERGY (USAT)   VANDERBORG N E,  SPRINGER T E,  HUFF R;  US4659634-A   STRUTHERS R C (STRU-Individual)   STRUTHERS R C;  US4670359-A   ENGELHARD MINERALS CORP (ENGH)   BESHTY B S,  WHELAN J A;  US4816353-A   INT FUEL CELLS CORP (ITFU);  US5271916-A   GENERAL MOTORS CORP (GENK)   GUANTE J,  VANDERBORGH N E,  NGUYEN T V;  US5518705-A   BALLARD POWER SYSTEMS INC (BLRD)   MCNEILLY L,  WATKINS D S,  BUSWELL R F,  COHEN R;  US6126908-A   LITTLE INC ARTHUR D (LITT)   CLAWSON L G;  US20030200699-A1   ;  US6238815-B1   GENERAL MOTORS CORP (GENK)   SKALA G W,  HART-PREDMORE D J,  PETTIT W H,  BORUP R L;  US6521204-B1   GENERAL MOTORS CORP (GENK)   BORUP R L,  PETTIT W H;  US6936238-B2 -- DE3912003-A   MITSUBISHI GAS CHEM CO INC (MITN)   MURAYAMA K,  YAMAGUCHI M,  NAKAMURA T;  DE10127199-A1   GENERAL MOTORS CORP (GENK)   BORUP R L,  PETTIT W H;  DE19727841-A1   FRAUNHOFER GES FOERDERUNG ANGEWANDTEN (FRAU)   MAIER-ROELTGEN U,  SCHULER A,  FINKBEINER H;  EP214432-A   UHDE GMBH (UHDE)   HERBORT H J,  MARSCH H D;  EP242199-A   ;  EP330751-A   ;  EP710996-A1   TOYOTA JIDOSHA KK (TOYT)   KAWATSU S;  EP1277698-A2   KELLOGG BROWN & ROOT INC (PULL)   BURLINGAME R A,  CZUPPON T A,  HACKEMESSER L G;  US4293315-A   UNITED TECHNOLOGIES CORP (UNAC)   SEDERQUIST R A;  US4642272-A   INTER FUEL CELLS CO (ITFU-Non-standard)   SEDERQUIST R A;  US4650727-A   US DEPT ENERGY (USAT)   VANDERBORG N E,  SPRINGER T E,  HUFF R;  US4659634-A   STRUTHERS R C (STRU-Individual)   STRUTHERS R C;  US4670359-A   ENGELHARD MINERALS CORP (ENGH)   BESHTY B S,  WHELAN J A;  US4816353-A   INT FUEL CELLS CORP (ITFU);  US5271916-A   GENERAL MOTORS CORP (GENK)   GUANTE J,  VANDERBORGH N E,  NGUYEN T V;  US5518705-A   BALLARD POWER SYSTEMS INC (BLRD)   MCNEILLY L,  WATKINS D S,  BUSWELL R F,  COHEN R;  US6126908-A   LITTLE INC ARTHUR D (LITT)   CLAWSON L G;  US20030200699-A1   ;  US6238815-B1   GENERAL MOTORS CORP (GENK)   SKALA G W,  HART-PREDMORE D J,  PETTIT W H,  BORUP R L;  US6521204-B1   GENERAL MOTORS CORP (GENK)   BORUP R L,  PETTIT W H;  WO2001032302-A1   ;  WO2001094005-A1   ;  DE10338240-B4 -- DE3912003-A   MITSUBISHI GAS CHEM CO INC (MITN)   MURAYAMA K,  YAMAGUCHI M,  NAKAMURA T;  DE10127199-A1   GENERAL MOTORS CORP (GENK)   BORUP R L,  PETTIT W H;  DE19727841-A1   FRAUNHOFER GES FOERDERUNG ANGEWANDTEN (FRAU)   MAIER-ROELTGEN U,  SCHULER A,  FINKBEINER H;  EP214432-A   UHDE GMBH (UHDE)   HERBORT H J,  MARSCH H D;  EP330751-A   ;  EP1277698-A2   KELLOGG BROWN & ROOT INC (PULL)   BURLINGAME R A,  CZUPPON T A,  HACKEMESSER L G;  EP242199-B   ;  WO2001032302-A1   ;  WO2001094005-A1