US2004197616-A1 -- US350176-A   ;  US2751034-A   ;  US2824620-A   ;  US3336730-A   ;  US3338681-A   ;  US3469944-A   ;  US3487608-A   GRAFF RW (GRA-Individual);  GRAFF R W (GRAF-Individual);  US3986849-A   UNION CARBIDE CORP (UNIC)   FUDERER A,  RUDELSTORFER E;  US4038054-A   GRAFF R W (GRA-Individual);  US4098959-A   UNITED TECHNOLOGIES CORP (UNAC)   FANCIULLO S;  US4098960-A   UNITED TECHNOLOGIES CORP (UNAC)   GAGNON R N;  US4175165-A   ENGELHARD MINERALS CORP (ENGH)   ADLHART O J;  US4214969-A   GENERAL ELECTRIC CO (GENE);  UNITED TECHNOLOGIES CORP (UNAC)   LAWRANCE R J;  US4272265-A   ESSEX CRYOGENICS MISSOURI (ESSE-Non-standard)   SNYDER F P;  US4406675-A   UNION CARBIDE CORP (UNIC)   DANGIERI T J,  CASSIDY R T;  US4452612-A   CUBEMCO INC (CUBE-Non-standard)   MASTTIA M M;  US4468235-A   HILL E F (HILL-Individual)   HILL E F;  US4469494-A   KINETICS TECHN INT (KINE-Non-standard)   VANWEEGEN W F;  US4509915-A   OSAKA GAS CO LTD (OSAG)   SHIMIZU S,  MITSUDOMI H,  ITO H;  US4553981-A   UNION CARBIDE CORP (UNIC)   FUDERER A;  US4758253-A   IMPERIAL CHEM IND PLC (ICIL)   DAVIDSON P J,  LYWOOD W J;  US4787417-A   WINDSOR J E (WIND-Individual)   WINDSOR J F;  US4925464-A   RYDER INT CORP (RYDE-Non-standard)   RABENAU R,  KANNER R W,  HUNTER D W;  US4968334-A   HILTON T J (HILT-Individual)   HILTON T J;  US5112367-A   HILL C C (HILL-Individual)   HILL C C;  US5114441-A   RYDER INT CORP (RYDE-Non-standard)   KANNER R W,  LISAK S P;  US5133784-A   AIR LIQUIDE CANADA LTEE (AIRL)   BOUDET M,  SCUDIER J M,  VOGOR X;  US5176722-A   BOC GROUP INC (BRTO)   LEMCOFF N,  GMELIN R;  US5256172-A   KEEFER B G (KEEF-Individual)   KEEFER B G;  US5256174-A   MITSUBISHI JUKOGYO KK (MITO)   KAI N,  KANEKO S,  ABE T;  US5268021-A   HILL C C (HILL-Individual);  HILL T B (HILL-Individual)   HILL C C,  HILL T B;  US5354547-A   AIR PROD & CHEM INC (AIRP)   RAO M B,  SIRCAR S,  ABRARDO J M,  BAADE W F;  US5366541-A   HILL C C (HILL-Individual);  HILL T B (HILL-Individual)   HILL C C,  HILL T B;  US5401589-A   VICKERS SHIPBUILDING & ENG (VICS);  CJBD LTD (CJBD-Non-standard)   PALMER I,  SEYMOUR C M,  DAMS R A J;  US5432710-A   OSAKA GAS CO LTD (OSAG)   ISHIMARU K,  NAKASHIBA A,  KOGA M,  OHNISHI H,  KAWAHARA H;  US5441559-A   AIR LIQUIDE SA (AIRL)   PETIT P,  POTEAU M,  SCUDIER J,  VIGOR X;  US5487775-A   BOC GROUP INC (BRTO)   LACAVA A,  MCKEIGUE K;  US5593478-A   SEQUAL TECHNOLOGIES INC (SEQU-Non-standard)   HILL C C,  HILL T B;  US5637414-A   FUJI ELECTRIC CO LTD (FJIE)   INOUE S,  NAGAI T,  KOMATSU T,  WAKATSUKI S,  MOGI H;  US5730778-A   SEQUAL TECHNOLOGIES INC (SEQU-Non-standard)   HILL T B,  HILL C C;  US5807423-A   BOC GROUP INC (BRTO)   LEMCOFF N O,  FRONZONI M A,  GARRETT M E,  GREEN B C,  ATKINSON T,  LACAVA A I;  US5814130-A   BOC GROUP INC (BRTO)   LEMCOFF N O,  FRONZONI M A,  GARRETT M E,  GREEN B C,  ATKINSON T,  LACAVA A I;  US5814131-A   BOC GROUP INC (BRTO)   LEMCOFF N O,  FRONZONI M A,  GARRETT M E,  GREEN B C,  ATKINSON T,  LACAVA A I;  US5820656-A   BOC GROUP INC (BRTO)   LEMCOFF N O,  FRONZONI M A,  GARRETT M E,  GREEN B C,  ATKINSON T,  LACAVA A I;  US5891214-A   TECHNOLOGICAL RESOURCES PTY LTD (TCRS)   INNES J,  HARDIE G;  US5932181-A   YUKONG LTD (YUKO-Non-standard)   KIM T C,  YOON G S,  CHUNG S J,  HAN J S,  HYUNG J H;  US5979440-A   SEQUAL TECHNOLOGIES INC (SEQU-Non-standard)   HONKONEN S C,  HILL T B,  HILL C C,  WALKER G;  US6045933-A   HONDA MOTOR CO LTD (HOND)   OKAMOTO T;  US6051050-A   QUESTOR IND INC (QUES-Non-standard)   KEEFER B G,  DOMAN D G;  US6056804-A   QUESTOR IND INC (QUES-Non-standard);  KEEFER B G (KEEF-Individual)   KEEFER B G,  MCLEAN C R;  US6063161-A   KEEFER B G (KEEF-Individual)   KEEFER B G,  DOMAN D G;  US6068680-A   IMPACT MST INC (IMPA-Non-standard)   KULISH S,  SWANK R P;  US6083638-A   SANYO ELECTRIC CO LTD (SAOL)   TANIGUCHI S,  MIYAKE Y,  KANEKO M;  US6106963-A   TOYOTA JIDOSHA KK (TOYT)   NITTA S,  TAKI M,  KAWAHARA T,  MIURA M;  US6143056-A   PRAXAIR TECHNOLOGY INC (PRAX)   SMOLAREK J,  KUN L C;  US20010026884-A1   ;  US20020004157-A1   ;  US20020058169-A1   ;  US20020110504-A1   ;  US20020114747-A1   ;  US20020124885-A1   ;  US20020127442-A1   ;  US20030005928-A1   ;  US20030031908-A1   ;  US6168422-B1   QUESTOR TECHNOLOGY INC (QUES-Non-standard)   MOTYKA D R,  LOH J K S;  US6176897-B1   KEEFER B G (KEEF-Individual)   KEEFER B G;  US6311719-B1   SEQUAL TECHNOLOGIES INC (SEQU-Non-standard)   HILL T B,  HILL C C,  HANSEN A C;  US6379645-B1   AIR PROD & CHEM INC (AIRP)   BUCCI D P,  REPASKY J M,  CHATTERJEE N,  SNYDER G D;  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;  US6451095-B1   QUESTOR IND INC (QUES-Non-standard)   KEEFER B G,  DOMAN D G,  MCLEAN C R;  US6471744-B1   SEQUAL TECHNOLOGIES INC (SEQU-Non-standard)   HILL T B;  US6457485-B2   SEQUAL TECHNOLOGIES INC (SEQU-Non-standard)   HILL T B,  HILL C C,  HANSEN A C;  US6514318-B2   QUESTAIR TECHNOLOGIES INC (QUES-Non-standard)   KEEFER B G;  US6514319-B2   QUESTAIR TECHNOLOGIES INC (QUES-Non-standard)   KEEFER B G,  SCOTT J C,  MCLEAN C;  US6627338-B2   BALLARD POWER SYSTEMS INC (BLRD)   ST-PIERRE J,  WILKINSON D P,  WAINWRIGHT D S;  US35099-E   HILL C C (HILL-Individual)   HILL C C;  WO2004091005-A2 -- US6045933-A   HONDA MOTOR CO LTD (HOND)   OKAMOTO T;  US6106963-A   TOYOTA JIDOSHA KK (TOYT)   NITTA S,  TAKI M,  KAWAHARA T,  MIURA M;  US20010026884-A1   ;  US20030031908-A1