WO9723448-A1 -- DE19533711-A1   CENTRAL GLASS CO LTD (CENG)   SAKAGUCHI H,  FUJII K,  SAKAI S,  KOBAYASHI Y,  KITA Y;  GB1309621-A   FARBENFAB BAYER AG (FARB);  US5072040-A   CNRS CENT NAT RECH SCI (CNRS);  HYDRO-QUEBEC (QUGO)   ARMAND M;  US5256821-A   SOC NAT ELF AQUITAINE (ERAP);  HYDRO-QUEBEC (QUGO)   ARMAND M;  US5874616-A -- CA2096816-A   BAYER AG (FARB)   POHMER K,  WEBER R,  DOERZBACH-LANGE C,  STACHULLA K,  MORETTO H,  WIENAND M;  DE2239817-A   ;  EP576225-A1   UNIV ARIZONA STATE (UYAS)   ANGELL C,  LIU C;  FR2683524-A1   CENT NAT RECH SCI (CNRS);  HYDRO QUEBEC (QUGO)   ARMAND M,  BENRABAH D,  SANCHEZ J;  GB1309621-A   FARBENFAB BAYER AG (FARB);  US385299-A   ;  US2732398-A   ;  US3336382-A   ;  US3423299-A   ;  US3476753-A   ;  US3542864-A   ;  US3623963-A   FARBENFAB BAYER AG (FARB);  US3776960-A   ;  US3951762-A   BAYER AG (FARB);  US4505997-A   ANVAR AGENCE NAT VALORISATION (ANVR);  SOC MAT ELF AQUITAINE (ERAP);  HYDRO-QUEBEC (QUGO)   ARMAND M,  ELKADIRICH F;  US5072040-A   CNRS CENT NAT RECH SCI (CNRS);  HYDRO-QUEBEC (QUGO)   ARMAND M;  US5256821-A   SOC NAT ELF AQUITAINE (ERAP);  HYDRO-QUEBEC (QUGO)   ARMAND M;  US5273840-A   COVALENT ASSOC INC (COVA-Non-standard)   DOMINEY L A;  US5318674-A   MINNESOTA MINING & MFG CO (MINN)   CHEBURKOV Y,  BEHR F E,  HANSEN J C;  US5414117-A   CENT NAT RECH SCI (CNRS);  HYDRO QUEBEC (QUGO)   ARMAND M,  SANCHEZ J,  SYLLA S;  US5414120-A   BAYER AG (FARB)   POHMER K,  WEBER R,  DOERZBACH-LANGE C,  HAIDA R,  MORETTO H;  US5446134-A   CENT NAT RECH SCI (CNRS);  HYDRO QUEBEC (QUGO)   ARMAND M,  BENRABAH D,  SANCHEZ J;  US5463005-A   GAS RES INST (GASR-Non-standard)   DESMARTEAU D D;  WO1993016988-A1   ;  WO1995026056-A1   ;  EP904265-A1 -- EP731518-A1   MINNESOTA MINING & MFG CO (MINN)   LAMANNA W M,  HAMROCK S J,  KRAUSE L J,  WADDELL J E,  MOORE G G I;  EP904265-B1 -- DE19533711-A1   CENTRAL GLASS CO LTD (CENG)   SAKAGUCHI H,  FUJII K,  SAKAI S,  KOBAYASHI Y,  KITA Y;  EP731518-A1   MINNESOTA MINING & MFG CO (MINN)   LAMANNA W M,  HAMROCK S J,  KRAUSE L J,  WADDELL J E,  MOORE G G I;  GB1309621-A   FARBENFAB BAYER AG (FARB);  US5072040-A   CNRS CENT NAT RECH SCI (CNRS);  HYDRO-QUEBEC (QUGO)   ARMAND M;  US5256821-A   SOC NAT ELF AQUITAINE (ERAP);  HYDRO-QUEBEC (QUGO)   ARMAND M