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 US6190791-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   HORNBURG G;  US6200365-B1   ULTRAFILTER GMBH (ULTR-Non-standard)   EIMER K,  SCHUSTER H,  PATZIG D,  BEHRENDT M;  US6210822-B1   MERCEDES-BENZ AG (DAIM);  DAIMLERCHRYSLER AG (DAIM)   ABERSFELDER G,  BUCHNER H;  US6231644-B1   BOC GROUP INC (BRTO)   JAIN R,  LACAVA A I,  MAHESHWARY A,  AMBRIANO J R,  ACHARYA D R,  FITCH F R;  US6255010-B1   SIEMENS WESTINGHOUSE POWER CORP (SIEI)   GEORGE R A,  VEYO S E,  DEDERER J T;  US6398853-B1   QUEST AIR GASES INC (QUES-Non-standard)   KEEFER B G,  KAUPERT K A;  US6406523-B1   QUESTAIR TECHNOLOGIES INC (QUES-Non-standard)   CONNOR D J,  DOMAN D G,  JEZIOROWSKI L,  KEEFER B G,  LARISCH B,  MCLEAN C,  SHAW I;  US6428915-B1   TOYOTA JIDOSHA KK (TOYT)   BAN T,  KATOH H,  KIMBARA M,  KUBO H;  US6607854-B1   HONEYWELL INT INC (HONE)   REHG T,  SOKOLOV P,  FERRALL J,  EMERSON T P,  GEE M;  US6692545-B2   GITTLEMAN C S (GITT-Individual);  GUPTA R (GUPT-Individual)   GITTLEMAN C S,  GUPTA R;  US2006257708-A1 -- US3094569-A   ; 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 ZIAKA Z D (ZIAK-Individual)   VASILEIADIS S,  ZIAKA Z D;  US20020004157-A1   ;  US20020098394-A1   ;  US20020104518-A1   ;  US20020110503-A1   ;  US20020110504-A1   ;  US20020112479-A1   ;  US20030070550-A1   ;  US20030143448-A1   ;  US20030157390-A1   ;  US20040005492-A1   ;  US20040131912-A1   ;  US6176897-B1   KEEFER B G (KEEF-Individual)   KEEFER B G;  US6190623-B1   UOP LLC (UNVO)   SANGER R J,  SENETAR J J,  VANDEN BUSSCHE K,  TOWLER G P,  DOSHI K J;  US6190791-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   HORNBURG G;  US6200365-B1   ULTRAFILTER GMBH (ULTR-Non-standard)   EIMER K,  SCHUSTER H,  PATZIG D,  BEHRENDT M;  US6210822-B1   MERCEDES-BENZ AG (DAIM);  DAIMLERCHRYSLER AG (DAIM)   ABERSFELDER G,  BUCHNER H;  US6231644-B1   BOC GROUP INC (BRTO)   JAIN R,  LACAVA A I,  MAHESHWARY A,  AMBRIANO J R,  ACHARYA D R,  FITCH F R;  US6255010-B1   SIEMENS WESTINGHOUSE POWER CORP (SIEI)   GEORGE R A,  VEYO S E,  DEDERER J T;  US6398853-B1   QUEST AIR GASES INC (QUES-Non-standard)   KEEFER B G,  KAUPERT K A;  US6406523-B1   QUESTAIR TECHNOLOGIES INC (QUES-Non-standard)   CONNOR D J,  DOMAN D G,  JEZIOROWSKI L,  KEEFER B G,  LARISCH B,  MCLEAN C,  SHAW I;  US6428915-B1   TOYOTA JIDOSHA KK (TOYT)   BAN T,  KATOH H,  KIMBARA M,  KUBO H;  US6607854-B1   HONEYWELL INT INC (HONE)   REHG T,  SOKOLOV P,  FERRALL J,  EMERSON T P,  GEE M;  US6692545-B2   GITTLEMAN C S (GITT-Individual);  GUPTA R (GUPT-Individual)   GITTLEMAN C S,  GUPTA R;  US7087331-B2   QUESTAIR TECHNOLOGIES INC (QUES-Non-standard)   KEEFER B G,  CONNOR D J,  HUNTER C F;  US7758988-B2 -- CA1256038-A   KEEFER B G (KEEF-Individual)   KEEFER B G;  CA2016045-A   ;  CA2109055-A   KEEFER B G (KEEF-Individual)   KEEFER B G;  CA2087972-C   KEEFER B G (KEEF-Individual)   KEEFER B G;  CA2087973-C   KEEFER B G (KEEF-Individual)   KEEFER B G;  DE3913581-A   LINDE AG (LINM)   SCHRAMM W;  EP143537-A   KEEFER B G (KEEF-Individual)   KEEFER B G;  EP341189-A   INT FUEL CELLS CORP (ITFU)   SCHEFFLER G W,  VARTANIAN G;  EP345908-A   KTI GROUP BV (KTIK-Non-standard);  KINETICS TECHN INT (KINE-Non-standard)   MUGERWA M N,  BLOMEN L J M;  EP691701-A1   ISHIKAWAJIMA HARIMA HEAVY IND (ISHI)   HAMADA K,  MIZUSAWA M,  KOGA M;  EP750361-A1   EXXON RES & ENG CO (ESSO)   BELLOWS R J,  ROBBINS J L;  EP1095689-A1   AIR LIQUIDE SA (AIRL)   MONEREAU C,  BELOT J;  EP737648-A2   AIR PROD & CHEM INC (AIRP)   ANAND M,  SIRCAR S,  CARVILL B T;  EP751045-A2   MERCEDES-BENZ AG (DAIM);  DAIMLERCHRYSLER AG (DAIM)   ABERSFELDER G,  BUCHNER H;  EP853967-A2   BOC GROUP INC (BRTO)   LEMCOFF N O,  FRONZONI M A,  GARRETT M E,  GREEN B C,  ATKINSON T,  LACAVA A I;  EP1070531-A2   BOC GROUP INC (BRTO)   JAIN R,  LACAVA A I,  MAHESHWARY A,  AMBRIANO J R,  ACHARYA D R,  FITCH F R;  EP1172772-A2   ;  EP681860-A3   BOC GROUP INC (BRTO)   LACAVA A,  MCKEIGUE K;  EP143537-B1   KEEFER B G (KEEF-Individual)   KEEFER B G;  GB2042365-A   BOC LTD (BRTO)   SMITH K C;  JP04206161-A   ;  JP05166528-A   ;  JP07094200-A   ;  JP08045526-A   ;  JP10027621-A   ;  JP10325360-A   ;  JP59075574-A   ; 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 US20020098394-A1   ;  US20020104518-A1   ;  US20020110503-A1   ;  US20020110504-A1   ;  US20020112479-A1   ;  US20020127442-A1   ;  US20020142198-A1   ;  US20020142208-A1   ;  US20030070550-A1   ;  US20030143448-A1   ;  US20030157390-A1   ;  US20040005492-A1   ;  US20040131912-A1   ;  US6176897-B1   KEEFER B G (KEEF-Individual)   KEEFER B G;  US6190623-B1   UOP LLC (UNVO)   SANGER R J,  SENETAR J J,  VANDEN BUSSCHE K,  TOWLER G P,  DOSHI K J;  US6190791-B1   DBB FUEL CELL ENGINES GMBH (DBBF-Non-standard)   HORNBURG G;  US6200365-B1   ULTRAFILTER GMBH (ULTR-Non-standard)   EIMER K,  SCHUSTER H,  PATZIG D,  BEHRENDT M;  US6210822-B1   MERCEDES-BENZ AG (DAIM);  DAIMLERCHRYSLER AG (DAIM)   ABERSFELDER G,  BUCHNER H;  US6231644-B1   BOC GROUP INC (BRTO)   JAIN R,  LACAVA A I,  MAHESHWARY A,  AMBRIANO J R,  ACHARYA D R,  FITCH F R;  US6255010-B1   SIEMENS WESTINGHOUSE POWER CORP (SIEI)   GEORGE R A,  VEYO S E,  DEDERER J T;  US6283723-B1   VAIREX CORP (VAIR-Non-standard)   MILBURN S M,  BARBER J L,  CRONIN J J;  US6293998-B1   UOP LLC (UNVO)   DOLAN W B,  DAVIS M M,  TANG M;  US6296823-B1   DAIMLER-BENZ AG (DAIM)   ERTL H,  GOEBEL J;  US6312843-B1   TOYODA JIDOSHOKKI SEISAKUSHO KK (TOYX)   KIMBARA M,  BAN T,  KUBO H,  KATOH H;  US6398853-B1   QUEST AIR GASES INC (QUES-Non-standard)   KEEFER B G,  KAUPERT K A;  US6406523-B1   QUESTAIR TECHNOLOGIES INC (QUES-Non-standard)   CONNOR D J,  DOMAN D G,  JEZIOROWSKI L,  KEEFER B G,  LARISCH B,  MCLEAN C,  SHAW I;  US6428915-B1   TOYOTA JIDOSHA KK (TOYT)   BAN T,  KATOH H,  KIMBARA M,  KUBO H;  US6451095-B1   QUESTOR IND INC (QUES-Non-standard)   KEEFER B G,  DOMAN D G,  MCLEAN C R;  US6607854-B1   HONEYWELL INT INC (HONE)   REHG T,  SOKOLOV P,  FERRALL J,  EMERSON T P,  GEE M;  US6692545-B2   GITTLEMAN C S (GITT-Individual);  GUPTA R (GUPT-Individual)   GITTLEMAN C S,  GUPTA R;  US7087331-B2   QUESTAIR TECHNOLOGIES INC (QUES-Non-standard)   KEEFER B G,  CONNOR D J,  HUNTER C F;  WO1994004249-A1   ;  WO1998029182-A1   ;  WO1999001202-A1   ;  WO1999019249-A1   ;  WO2000016425-A1   ;  WO2000016880-A1   ;  WO2000076630-A1   ;  WO2001047050-A1   ;  WO2002024309-A1   ;  WO2002037590-A1   ;  WO2002047797-A1   ;  WO1996013871-A2   ;  WO1999028013-A2   ;  WO1999046032-A2   ;  WO2002035623-A2   ;  WO2002045821-A2   ;  WO2002056400-A2