;  US7523607-B2 -- US3217696-A   ;  US4161657-A   SHAFFER M R (SHAF-Individual)   SHAFFER M R;  US4256060-A   ;  US4368696-A   REINHARDT W E (REIN-Individual)   REINHARDT W E;  US4520305-A   CAUCHY C J (CAUC-Individual)   CAUCHY C J;  US4673863-A   ;  US4753682-A   ITAL IDEE SRL (ITAL-Non-standard)   CANTONI A;  US4911894-A   RETALLICK W B (RETA-Individual)   RETALLICK W B,  CHURCHILL S W,  STRENGER M R;  US5033264-A   TECOGEN INC (TECO-Non-standard)   CABRAL R E;  US5105773-A   ALTERNATE FUELS INC (ALTE-Non-standard)   CUNNINGHAM J E,  GOODENOUGH R E;  US5343699-A   MCALISTER R E (MCAL-Individual)   MCALISTER R E;  US5436216-A   NIPPONDENSO CO LTD (NPDE)   TOYAO T,  MATSUI T,  NAKAMURA T,  OKAJIMA A,  AOKI H,  NAGATA N,  MAEHARA S,  TOUJIYOU K,  NAKAMURA K;  US5450822-A   ;  US5477676-A   BENSON D K (BENS-Individual);  POTTER T F (POTT-Individual)   BENSON D K,  POTTER T F;  US5540831-A   KLEIN M (KLEI-Individual)   KLEIN M;  US5625245-A   BASS J C (BASS-Individual)   BASS J C;  US5753383-A   CARGNELLI J (CARG-Individual);  RIVARD P (RIVA-Individual);  TAYLOR B (TAYL-Individual)   RIVARD P,  CARGNELLI J,  TAYLOR B;  US5852274-A   ;  US5948504-A   ;  US5968456-A   PARISE R J (PARI-Individual)   PARISE R J;  US6162403-A   GENERAL MOTORS CORP (GENK)   FOSTER M R,  BRAATZ W H,  DE SOUSA E J;  US20030085135-A1   ;  US6168763-B1   HERAEUS SENSOR NITE TECH GMBH (HERA);  HERAEUS ELECTRO-NITE INT NV (HERA)   RENZ U,  HOTZ U;  US6172427-B1   NISSAN MOTOR CO LTD (NSMO)   SHINOHARA K,  KOBAYASHI M,  FURUYA K,  KUSHIBIKI K;  US6231831-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   AUTENRIETH R,  POSCHMANN T,  WIELAND S,  HEIL D,  BONEBERG S;  US6282371-B1   MARTIN R J (MART-Individual);  EDGAR B L (EDGA-Individual);  PAGE D L (PAGE-Individual);  PAUL P P (PAUL-Individual)   MARTIN R J,  EDGAR B L,  PAGE D L,  PAUL P P;  US6461752-B1   US SEC OF ARMY (USSA)   LEUNG F C;  US6516615-B1   ;  US6562305-B1   ;  US6821491-B1   EMITEC GES EMISSIONSTECHNOLOGIE MBH (EMCE)   BRUECK R,  VIERKOETTER M,  ZEHETNER J;  US6827909-B1   EMITEC GES EMISSIONSTECHNOLOGIE MBH (EMCE)   BRUECK R,  KONIECZNY J;  US6986247-B1   PARISE R J (PARI-Individual)   PARISE R J;  US6559551-B2   XCELLSIS GMBH (XCEL-Non-standard)   GRAAGE K,  ZUR MEGEDE D;  US6571552-B2   BAN M (BANM-Individual);  MATSUZAKI A (MATS-Individual)   BAN M,  MATSUZAKI A;  US6605773-B2   FORD GLOBAL TECHNOLOGIES INC (FORD)   BUSCH R,  KOK D B;  US6613293-B2   FORSCHUNGSZENTRUM JUELICH GMBH (KERJ)   DORNSEIFFER J,  HACKFORT H;  US6659049-B2   ZAGAJA J (ZAGA-Individual);  MOLTER T (MOLT-Individual);  MOULTHROP L C (MOUL-Individual);  SMITH W (SMIT-Individual)   ZAGAJA J,  MOLTER T,  MOULTHROP L C,  SMITH W;  US6804965-B2   ABRAS A D (ABRA-Individual)   ABRAS A D