WO200287745-A1 -- US3938968-A   PARSONS CO RALPH M (PARW)   WHITE G A,  ROSZKOWSKI T R;  US4522894-A   ENGELHARD MINERALS CORP (ENGH)   HWANG H S,  HECK R M,  YARRINGTON R M;  US4933242-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI)   KOGA M,  WATANABE T,  HIRATA T,  OGOSHI M;  US5534328-A   DU PONT DE NEMOURS & CO E I (DUPO)   ASHMEAD J W,  BLAISDELL C T,  JOHNSON M H,  NYQUIST J,  PERROTTO J A,  RYLEY J F;  US6159434-A   MITSUBISHI DENKI KK (MITQ);  ENG ADVANCEMENT ASSOC JAPAN (ENGA-Non-standard)   GONJO Y,  SUGIMOTO T,  SATOH M;  WO1999036351-A1   ;  US6790247-B2 -- US5015444-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI)   KOGA M,  WATANABE T;  US5209906-A   BALLARD POWER SYSTEMS INC (BLRD)   WATKINS D S,  POW E G,  LINES D A;  US5316747-A   BALLARD POWER SYSTEMS INC (BLRD)   POW E G,  TALABA M,  MCNEILLY L,  WATKINS D S,  LINES D A;  US5609834-A   ISHIKAWAJIMA HARIMA HEAVY IND (ISHI)   HAMADA K,  MIZUSAWA M,  KOGA M;  US6159434-A   MITSUBISHI DENKI KK (MITQ);  ENG ADVANCEMENT ASSOC JAPAN (ENGA-Non-standard)   GONJO Y,  SUGIMOTO T,  SATOH M;  US7442216-B2 -- US6790247-B2   TEXACO DEV CORP (TEXC)   CHILDRESS R,  FARRELL J R,  LEIMBACH W B,  MARSHALL J W;  US6835354-B2   HYDROGEN BURNER TECHNOLOGY INC (HYDR-Non-standard)   WOODS R,  DURAISWAMY K,  BARGE S;  EP977293-A2   GENERAL MOTORS CORP (GENK)   SKALA G W,  HART-PREDMORE D J,  PETTIT W H,  BORUP R L;  US3938968-A   PARSONS CO RALPH M (PARW)   WHITE G A,  ROSZKOWSKI T R;  US4522894-A   ENGELHARD MINERALS CORP (ENGH)   HWANG H S,  HECK R M,  YARRINGTON R M;  US4933242-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI)   KOGA M,  WATANABE T,  HIRATA T,  OGOSHI M;  US5015444-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI)   KOGA M,  WATANABE T;  US5209906-A   BALLARD POWER SYSTEMS INC (BLRD)   WATKINS D S,  POW E G,  LINES D A;  US5316747-A   BALLARD POWER SYSTEMS INC (BLRD)   POW E G,  TALABA M,  MCNEILLY L,  WATKINS D S,  LINES D A;  US5534328-A   DU PONT DE NEMOURS & CO E I (DUPO)   ASHMEAD J W,  BLAISDELL C T,  JOHNSON M H,  NYQUIST J,  PERROTTO J A,  RYLEY J F;  US5609834-A   ISHIKAWAJIMA HARIMA HEAVY IND (ISHI)   HAMADA K,  MIZUSAWA M,  KOGA M;  US6159434-A   MITSUBISHI DENKI KK (MITQ);  ENG ADVANCEMENT ASSOC JAPAN (ENGA-Non-standard)   GONJO Y,  SUGIMOTO T,  SATOH M;  WO1999036351-A1   ;  WO2000066487-A1   ;  WO2000078669-A1