WO200258818-A2 -- EP437027-A   UOP (UNVO)   CHAO C C;  EP437027-B1   UOP (UNVO)   CHAO C C;  FR2781692-A1   ;  GB1370814-A   UNION CARBIDE CORP (UNIC);  US2656010-A   ;  US3161489-A   ;  US5486227-A   AIR PROD & CHEM INC (AIRP)   KUMAR R,  SCHARPF E W,  WOODS C M;  WO2000056424-A1   ;  US6444012-B1 -- EP297542-A   UNION CARBIDE CORP (UNIC);  UOP (UNVO)   CHAO C C;  EP302658-A   SEITETSU KAGAKU CO LTD (SEIT);  BERGWERKSVERBAND GMBH (BERG)   HARUNA K,  UEDA K,  INOUE M,  SOMEDA H;  US2656010-A   ;  US2843219-A   ;  US2918140-A   ;  US3279153-A   ;  US3430418-A   ;  US3738087-A   UNION CARBIDE CORP (UNIC);  US4190424-A   BOC LTD (BRTO);  US4512780-A   ;  US4588427-A   DM INT INC (DMIT-Non-standard)   YAO J,  CHEN J J,  ELLIOT D G;  US4589888-A   UNION CARBIDE CORP (UNIC)   HISCOCK W E,  CASSIDY R T,  WERNER R G;  US4784672-A   AIR PROD & CHEM INC (AIRP)   SIRCAR S;  US4938939-A   ENGELHARD CORP (ENGH)   KUZNICKI S M;  US4964888-A   UOP (UNVO)   MILLOR G Q;  US4964889-A   UOP (UNVO)   CHAO C C;  US5174796-A   UOP (UNVO)   DAVIS M M,  GRAY R L,  PATEL K;  US5224350-A   ADVANCED EXTRACTION TECHNOLOGIES (ADEX-Non-standard)   MEHRA Y R;  US5248322-A   AIR PROD & CHEM INC (AIRP)   KUMAR R;  US5354346-A   AIR PROD & CHEM INC (AIRP)   KUMAR R;  US5382280-A   AIR PROD & CHEM INC (AIRP)   WEIMER R F,  CHOE J S,  KELLOGG L J;  US5536300-A   NITROTEC CORP (NITR-Non-standard)   KNAEBEL K S,  REINHOLD H E,  D'AMICO J S;  US5669958-A   MEMBRANE TECHNOLOGY & RES INC (MEMB-Non-standard)   BAKER R W,  LOKHANDWALA K A,  PINNAU I,  SEGELKE S;  US5803953-A   ;  US5989316-A   ENGELHARD CORP (ENGH)   KUZNICKI S M,  BEHL V A,  PETROVIC I,  BLOSSER P W;  US5993517-A   BOC GROUP INC (BRTO)   CHEN Y,  KAPOOR A,  RAMACHANDRAN R;  US6068682-A   ENGELHARD CORP (ENGH)   KUZNICKI S M,  BELL V A,  PETROVIC I,  DESAI B T;  US6197092-B1   ENGELHARD CORP (ENGH)   BUTWELL K F,  DOLAN W B,  KUZNICKI S M;  US6210466-B1   UOP LLC (UNVO)   WHYSALL M,  WAGEMANS L J M;  US6290751-B1   ;  US6315817-B1   ENGELHARD CORP (ENGH)   BUTWELL K F,  DOLAN W B,  KUZNICKI S M;  WO1999032222-A1   ;  WO1999032404-A1   ;  EP1666126-A1 -- FR2781692-A1   ;  US5486227-A   AIR PROD & CHEM INC (AIRP)   KUMAR R,  SCHARPF E W,  WOODS C M;  EP1351753-B1 -- EP437027-A   UOP (UNVO)   CHAO C C;  FR2781692-A1   ;  GB1370814-A   UNION CARBIDE CORP (UNIC);  US2656010-A   ;  US3161489-A   ;  US5486227-A   AIR PROD & CHEM INC (AIRP)   KUMAR R,  SCHARPF E W,  WOODS C M;  WO2000056424-A1   ;  EP1666126-B1 -- FR2781692-A1   ;  US5486227-A   AIR PROD & CHEM INC (AIRP)   KUMAR R,  SCHARPF E W,  WOODS C M;  WO200258818-A3 -- EP570260-A1   VEGLA VER GLASWERKE GMBH (COMP)   SCHAEFER W,  HAEUSSLER G,  LINDEN L;  EP839769-A1   SAINT-GOBAIN VITRAGE (COMP)   KUSTER H;  JP03199141-A   ;  JP64003035-A   CENTRAL GLASS CO LTD (CENG)   EMURA Y,  ONISHI S,  TAKEUCHI N