US2003062204-A1 -- US5641031-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5662184-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5858568-A   ZTEK CORP (ZTEK-Non-standard)   HSU M S,  ONG R Y;  US20040062955-A1   ;  US20040072052-A1   ;  US20040101725-A1   ;  US6220380-B1   HONDA MOTOR CO LTD (HOND)   MITA Y,  ANAZAWA M,  TAKEUCHI A;  US6223843-B1   GENERAL MOTORS CORP (GENK)   O'CONNEL D B,  MOORE B S,  STRATTON M A,  MCMANIS J V;  US6223844-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   GREENHILL C J,  MUFFORD E W,  CORLESS A J,  MERRITT R D;  US6378637-B1   HONDA GIKEN KOGYO KK (HOND)   ONO T,  IGARASHI N,  USHIO T,  KAMI Y,  GOUHARA K;  US6394207-B1   GENERAL MOTORS CORP (GENK)   SKALA G W;  US6432568-B1   GENERAL MOTORS CORP (GENK)   SALVADOR J P,  BORUP R L,  PETTIT W H;  US6598691-B2   HONDA MOTOR CO LTD (HOND)   MITA Y,  TAKAHASHI K,  YAMAMURO S;  US6617065-B2   ENERGY PARTNERS LC (ENER-Non-standard)   BALASUBRAMANIAN B,  BARBIR F,  NEUTZLER J;  US6648085-B2   NAGURA H (NAGU-Individual);  KOMURO N (KOMU-Individual);  YAMASHITA N (YAMA-Individual)   NAGURA H,  KOMURO N,  YAMASHITA N;  US6656620-B2   HONDA GIKEN KOGYO KK (HOND)   KATAGIRI T,  SHIMANUKI H,  SUZUKI M,  KUSANO Y;  US6874588-B2 -- JP05021084-A   ;  US5641031-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5662184-A   DAIMLER-BENZ AG (DAIM)   RIEMER B,  KLAIBER T;  US5858568-A   ZTEK CORP (ZTEK-Non-standard)   HSU M S,  ONG R Y;  US20040062955-A1   ;  US20040072052-A1   ;  US20040101725-A1   ;  US6220380-B1   HONDA MOTOR CO LTD (HOND)   MITA Y,  ANAZAWA M,  TAKEUCHI A;  US6223843-B1   GENERAL MOTORS CORP (GENK)   O'CONNEL D B,  MOORE B S,  STRATTON M A,  MCMANIS J V;  US6223844-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   GREENHILL C J,  MUFFORD E W,  CORLESS A J,  MERRITT R D;  US6378637-B1   HONDA GIKEN KOGYO KK (HOND)   ONO T,  IGARASHI N,  USHIO T,  KAMI Y,  GOUHARA K;  US6394207-B1   GENERAL MOTORS CORP (GENK)   SKALA G W;  US6432568-B1   GENERAL MOTORS CORP (GENK)   SALVADOR J P,  BORUP R L,  PETTIT W H;  US6598691-B2   HONDA MOTOR CO LTD (HOND)   MITA Y,  TAKAHASHI K,  YAMAMURO S;  US6617065-B2   ENERGY PARTNERS LC (ENER-Non-standard)   BALASUBRAMANIAN B,  BARBIR F,  NEUTZLER J;  US6648085-B2   NAGURA H (NAGU-Individual);  KOMURO N (KOMU-Individual);  YAMASHITA N (YAMA-Individual)   NAGURA H,  KOMURO N,  YAMASHITA N;  US6656620-B2   HONDA GIKEN KOGYO KK (HOND)   KATAGIRI T,  SHIMANUKI H,  SUZUKI M,  KUSANO Y;  JP3932185-B2 -- JP04075263-A   ;  JP05021084-A   ;  JP2000149974-A   ;  JP2001071753-A   ;  JP2001113960-A   HONDA GIKEN KOGYO KK (HOND)   ONO T,  IGARASHI N,  USHIO T,  KAMI Y,  GOUHARA K;  JP2001155749-A   YAMAHA MOTOR CO LTD (YMHA)   MIZUNO Y,  KURANISHI M;  JP2001163063-A   YAMAHA MOTOR CO LTD (YMHA)   MIZUNO Y,  KURANISHI M;  JP2001216981-A   HONDA GIKEN KOGYO KK (HOND)   KATAGIRI T,  KUSANO Y,  SHIMANUKI H,  SUZUKI M;  JP2001253248-A   ;  JP89058834-B2   ;  US6223843-B1   GENERAL MOTORS CORP (GENK)   O'CONNEL D B,  MOORE B S,  STRATTON M A,  MCMANIS J V