WO9945606-A1 -- EP520469-A2   HALDOR TOPSOE AS (TOPS)   BJERRUM N J,  GANG X,  HJULER H A,  OLSEN C,  BERG R W;  FR2385228-A   ;  FR2404312-A   ;  JP07176310-A   ;  JP09320611-A   ;  JP61067789-A   ;  US5501915-A   JOHNSON MATTHEY PLC (JOHO)   HARDS G A,  RALPH T R;  US5766788-A   TANAKA KIKINZOKU KOGYO KK (TANI);  WATANABE M (WATA-Individual);  STONEHART ASSOC INC (STON-Non-standard)   INOUE M,  TADA T;  WO1996012317-A1   ;  US6074773-A -- EP305565-A   ;  EP520469-A2   HALDOR TOPSOE AS (TOPS)   BJERRUM N J,  GANG X,  HJULER H A,  OLSEN C,  BERG R W;  FR2385228-A   ;  FR2404312-A   ;  JP07176310-A   ;  JP09320611-A   ;  JP61067789-A   ;  US3769093-A   GENERAL ELECTRIC CO (GENE);  US4500395-A   NISSAN MOTOR CO LTD (NSMO)   NAKAMURA M;  US5185218-A   LUZ ELECTRIC FUEL ISRAEL LTD (LUZE-Non-standard)   BROKMAN A,  GOLDSTEIN J;  US5186877-A   TANAKA KIKINZOKU KOGYO KK (TANI)   WATANABE M;  US5346780-A   TOSHIBA KK (TOKE)   SUZUKI N;  US5501915-A   JOHNSON MATTHEY PLC (JOHO)   HARDS G A,  RALPH T R;  US5766788-A   TANAKA KIKINZOKU KOGYO KK (TANI);  WATANABE M (WATA-Individual);  STONEHART ASSOC INC (STON-Non-standard)   INOUE M,  TADA T;  WO1996012317-A1   ;  US6610432-B1 -- EP305565-A   ;  EP520469-A2   HALDOR TOPSOE AS (TOPS)   BJERRUM N J,  GANG X,  HJULER H A,  OLSEN C,  BERG R W;  FR2385228-A   ;  FR2404312-A   ;  JP07176310-A   ;  JP09320611-A   ;  JP61067789-A   ;  US3769093-A   GENERAL ELECTRIC CO (GENE);  US4500395-A   NISSAN MOTOR CO LTD (NSMO)   NAKAMURA M;  US5185218-A   LUZ ELECTRIC FUEL ISRAEL LTD (LUZE-Non-standard)   BROKMAN A,  GOLDSTEIN J;  US5186877-A   TANAKA KIKINZOKU KOGYO KK (TANI)   WATANABE M;  US5346780-A   TOSHIBA KK (TOKE)   SUZUKI N;  US5501915-A   JOHNSON MATTHEY PLC (JOHO)   HARDS G A,  RALPH T R;  US5766788-A   TANAKA KIKINZOKU KOGYO KK (TANI);  WATANABE M (WATA-Individual);  STONEHART ASSOC INC (STON-Non-standard)   INOUE M,  TADA T;  US6306536-B1   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  ST PIERRE J,  ROBERTS J A,  CAMPBELL S A,  ST.-PIERRE J;  WO1996012317-A1   ;  EP1068649-B1 -- EP520469-A2   HALDOR TOPSOE AS (TOPS)   BJERRUM N J,  GANG X,  HJULER H A,  OLSEN C,  BERG R W;  FR2385228-A   ;  FR2404312-A   ;  JP07176310-A   ;  JP09320611-A   ;  JP61067789-A   ;  US5501915-A   JOHNSON MATTHEY PLC (JOHO)   HARDS G A,  RALPH T R;  US5766788-A   TANAKA KIKINZOKU KOGYO KK (TANI);  WATANABE M (WATA-Individual);  STONEHART ASSOC INC (STON-Non-standard)   INOUE M,  TADA T;  WO1996012317-A1