US2004166384-A1 -- US5221586-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  US5484666-A   BALLARD POWER SYSTEMS INC (BLRD)   POW E G,  SCHLOSSER W,  GIBB P,  VOSS H H;  US5547777-A   RICHARDS W R (RICH-Individual)   RICHARDS W R;  US5789091-A   BALLARD POWER SYSTEMS INC (BLRD)   WOZNICZKA B,  FLETCHER N J,  GIBB P R;  US6040072-A   LYNNTECH INC (LYNN-Non-standard)   MURPHY O J,  SALINAS C,  CISAR A J;  US20030054211-A1   ;  US20040146758-A1   ;  US20040166383-A1   ;  US20050003257-A1   ;  US6623880-B1   US DEPT VETERANS AFFAIRS (USGO)   GEISBRECHT R A,  WILLIAMS M C;  US7087333-B2 -- EP444383-A   TANAKA KIKINZOKU KOGYO KK (TANI)   ONODA Y,  WATANABE M;  EP981174-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   HATOH K,  YASUMOTO E,  NISHIDA K,  GYOTEN H,  OHARA H,  UCHIDA M,  SUGAWARA Y,  KANBARA T,  MATSUMOTO T,  NAKAGAWA K;  EP981175-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   OHARA H,  GYOTEN H,  HATOH K,  NISHIDA K,  UCHIDA M,  YASUMOTO E,  SUGAWARA Y,  KANBARA T,  MATSUMOTO T;  JP08088018-A   ;  JP11097054-A   SANYO ELECTRIC CO LTD (SAOL)   YASUO K,  YOSHIMOTO Y,  HAMADA A,  MIYAKE Y;  JP61225779-A   ;  US5221586-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI);  TOKYO GAS CO LTD (TOLG);  OSAKA GAS CO LTD (OSAG);  TOHO GAS KK (TOHG)   MORIMOTO H,  HATO,  HATORI S,  KOBAYASHI K,  UEMATSU H,  HIKITA T,  SHINOZAKI K,  NAKAGAWA S;  US5484666-A   BALLARD POWER SYSTEMS INC (BLRD)   POW E G,  SCHLOSSER W,  GIBB P,  VOSS H H;  US5547777-A   RICHARDS W R (RICH-Individual)   RICHARDS W R;  US5789091-A   BALLARD POWER SYSTEMS INC (BLRD)   WOZNICZKA B,  FLETCHER N J,  GIBB P R;  US6040072-A   LYNNTECH INC (LYNN-Non-standard)   MURPHY O J,  SALINAS C,  CISAR A J;  US20030054211-A1   ;  US20040146758-A1   ;  US20040166383-A1   ;  US20050003257-A1   ;  US6623880-B1   US DEPT VETERANS AFFAIRS (USGO)   GEISBRECHT R A,  WILLIAMS M C;  WO2003005472-A2   ;  DE102004008704-B4 -- FR2816761-A1   AIR LIQUIDE SA (AIRL)   CHARLAT P