US2003136453-A1 -- US4771295-A   HEWLETT-PACKARD CO (HEWP)   BAKER J P,  COVERSTONE R A,  TONLA D;  US4791438-A   HEWLETT-PACKARD CO (HEWP)   HANSON G E,  KELLY G P,  CHAN C S,  COWGER B,  BEARSS J G;  US4794409-A   HEWLETT-PACKARD CO (HEWP)   COWGER B,  BEESON R;  US5010354-A   HEWLETT-PACKARD CO (HEWP)   COWGER B,  DION J H,  PETERS W E;  US5969736-A   HEWLETT-PACKARD CO (HEWP)   FIELD L A,  ZURAS G D,  MERCHANT P P,  HOEN S,  ROBERTSON C R,  BARTH P,  WALLER D J;  US6041762-A   IMPCO TECHNOLOGIES INC (IMPC-Non-standard)   ADLER E G,  MARLEY D,  SIROSH N,  HUSSAIN S;  US6447945-B1   GEN ATOMICS (GEAT)   STRECKERT H H,  BLUE L P,  KLUNKER J;  US6610433-B1   MANNESMANN AG (MANS)   HERDEG W,  KLOS H,  SATTLER M,  WILHELM H,  HABRICH J,  ECK K,  ZAPP T,  KEUTZ M;  EP1331684-A2 -- EP1087455-A2   TOSHIBA KK (TOKE)   YONETSU M,  TAKASHITA M,  SUMINO H;  JP2001313047-A   ;  US20020127141-A1   ;  WO2001045189-A1   ;  WO2001075999-A1   ;  US6808833-B2 -- US6041762-A   IMPCO TECHNOLOGIES INC (IMPC-Non-standard)   ADLER E G,  MARLEY D,  SIROSH N,  HUSSAIN S;  US6447945-B1   GEN ATOMICS (GEAT)   STRECKERT H H,  BLUE L P,  KLUNKER J;  US6610433-B1   MANNESMANN AG (MANS)   HERDEG W,  KLOS H,  SATTLER M,  WILHELM H,  HABRICH J,  ECK K,  ZAPP T,  KEUTZ M;  US4771295-A   HEWLETT-PACKARD CO (HEWP)   BAKER J P,  COVERSTONE R A,  TONLA D;  US4791438-A   HEWLETT-PACKARD CO (HEWP)   HANSON G E,  KELLY G P,  CHAN C S,  COWGER B,  BEARSS J G;  US4794409-A   HEWLETT-PACKARD CO (HEWP)   COWGER B,  BEESON R;  US5010354-A   HEWLETT-PACKARD CO (HEWP)   COWGER B,  DION J H,  PETERS W E;  US5969736-A   HEWLETT-PACKARD CO (HEWP)   FIELD L A,  ZURAS G D,  MERCHANT P P,  HOEN S,  ROBERTSON C R,  BARTH P,  WALLER D J;  WO2003043112-A1   SFC SMART FUEL CELL AG (SFCS-Non-standard)   DEINZER K,  RENSCH R,  REBSAMEN C,  KOLL A;  WO2002099916-A2   ;  JP3950065-B2 -- JP04223058-A   ;  JP2003092128-A   ;  WO2001045189-A1   ;  WO2001075999-A1   ;  EP1331684-B1 -- EP1087455-A2   TOSHIBA KK (TOKE)   YONETSU M,  TAKASHITA M,  SUMINO H;  US20020127141-A1   ;  WO2001045189-A1   ;  WO2001075999-A1