WO200240619-A2 -- EP913357-A1   NGK INSULATORS LTD (NIGA)   ABE F;  EP1046612-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   TAGUCHI K,  TOMIZAWA T,  UKAI K,  SHONO T,  KITAGAWA K;  EP1059265-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   TAGUCHI K,  TOMIZAWA T,  UKAI K,  MAENISHI A,  SHONO T,  KITAGAWA K;  GB1443735-A   PARSONS CO RALPH M (PARW);  US3382045-A   ;  US4803189-A   INTERATOM GMBH (INZO)   SWARS H;  DE10057420-A1 -- DE2054942-A   ;  DE4024942-A   EMITEC GES EMISS (EMCE)   MAUS W;  DE4025434-A   EMITEC GES EMISS (EMCE)   RECK A;  DE19625093-A1   BAYER AG (FARB)   DUMMERSDORF H,  MUELLER H,  GRENNER D,  MOORMANN G,  STUEWE A;  DE19858974-A1   DAIMLERCHRYSLER AG (DAIM)   DOCTER A,  STROBEL B,  WIESHEU N;  DE19921263-A1   EMITEC GES EMISSIONSTECHNOLOGIE MBH (EMCE)   BRUECK R,  MAUS W,  WIERES L;  DE68905891-E   IMPERIAL CHEM IND PLC (ICIL)   LYWOOD W J,  TWIGG M V;  DE69326820-E   JOHNSON MATTHEY PLC (JOHO)   GOLUNSKI S E,  GASCOYNE J M,  FULFORD A,  JENKINS J W;  EP913357-A1   NGK INSULATORS LTD (NIGA)   ABE F;  EP776861-B1   DAIMLER-BENZ AG (DAIM)   HEIL D,  STROBEL B,  WIESHEU N,  ZUR MEGEDE D,  BENZ U;  US2004005268-A1 -- US3382045-A   ;  US4017272-A   BAMAG VERFAHRENST (BAMA-Non-standard)   ANWER J,  BANCHIK I N,  BODE G W,  LEMBERG W,  SUD K K;  US4202167-A   TEXACO INC (TEXC)   SUGGITT R M,  GILMER W N,  RICHTER G N;  US4542114-A   AIR PROD & CHEM INC (AIRP)   HEGARTY W P;  US4803189-A   INTERATOM GMBH (INZO)   SWARS H;  US4963339-A   BOC GROUP PLC (BRTO)   KRISHNAMUR R,  MALIK V A,  STOKLEY A G;  US5000925-A   BOC GROUP PLC (BRTO)   KRISHNAMUR R,  MALIK V A,  STOKLEY A G;  US5030440-A   IMPERIAL CHEM IND PLC (ICIL)   LYWOOD W J,  TWIGG M V;  US5252609-A   IMPERIAL CHEM IND PLC (ICIL)   PINTO A;  US5271916-A   GENERAL MOTORS CORP (GENK)   GUANTE J,  VANDERBORGH N E,  NGUYEN T V;  US5316747-A   BALLARD POWER SYSTEMS INC (BLRD)   POW E G,  TALABA M,  MCNEILLY L,  WATKINS D S,  LINES D A;  US5328774-A   EMITEC GES EMISS (EMCE)   MAUS W;  US5456889-A   BALLARD POWER SYSTEMS INC (BLRD)   POW E G,  TALABA M,  MCNEILLY L,  WATKINS D S,  LINES D A;  US5518705-A   BALLARD POWER SYSTEMS INC (BLRD)   MCNEILLY L,  WATKINS D S,  BUSWELL R F,  COHEN R;  US5556449-A   MEMBRANE TECHNOLOGY & RES INC (MEMB-Non-standard)   BAKER R W,  LOKHANDWALA K A;  US5608968-A   EMITEC GES EMISSIONSTECHNOL (EMCE)   MAUS W,  SWARS H,  BRUECK R;  US5792432-A   BABCOCK-HITACHI KK (HITG)   KATO Y,  ISHIKAWA T,  NAGAI Y,  MORITA I,  MUKAI M,  YAMADA A,  MICHIMOTO T,  MORII M,  KURODA H;  US5874051-A   DAIMLER-BENZ AG (DAIM)   HEIL D,  STROBEL B,  WIESHEU N,  ZUR MEGEDE D,  BENZ U;  US5938975-A   EGT DEV LLC (EGTE-Non-standard)   ENNIS B P,  CIRRITO A;  US6048508-A   BAYER AG (FARB)   DUMMERSDORF H,  MUELLER H,  GRENNER D,  MOORMANN G,  STUEWE A;  US6132689-A   GENERAL MOTORS CORP (GENK)   SKALA G W,  BRUNDAGE M A,  BORUP R L,  PETTIT W H,  STUKEY K,  HART-PREDMORE D J,  FAIRCHOK J;  US20020061268-A1   ;  US6403049-B1   JOHNSON MATTHEY PLC (JOHO)   VAN KEULEN A N J,  REINKINGH J G;  US6576203-B2   NGK INSULATORS LTD (NIGA)   ABE F,  NODA N,  SUZUKI J;  US6770591-B2   EMITEC GES EMISSIONSTECHNOLOGIE MBH (EMCE)   WIERES L;  JP3890018-B2 -- JP11130405-A   NGK INSULATORS LTD (NIGA)   ABE F;  JP2000007303-A   NGK INSULATORS LTD (NIGA)   ABE F,  NODA N,  SUZUKI J;  WO2000048261-A1