EP755899-A2 -- BR7606622-A   ASFALTOS VITORIA (ASFA-Non-standard);  DE1496123-A1   GRACE & CO W R (GRAC);  GB2169129-A   PPG IND INC (PITT)   JOHNSON H B,  KRIVAK T G,  LONGHINI D A;  US3351495-A   GRACE & CO W R (GRAC);  US4024323-A   EVANS PROD CO (EVAP)   VERSTEEGH W M;  US4237083-A   EVANS PROD CO (EVAP)   YOUNG J,  GEISSEL C H,  ZENCZAK P;  DE19527278-A1 -- DE4427137-A1   DEGUSSA AG (DEGS)   ESCH H,  GOERL U,  KUHLMANN R,  RAUSCH R;  DE3545615-C   PPG IND INC (PITT)   JOHNSON H B,  KRIVAK T G,  LONGHINI D A;  US3445189-A   KONZ (ALKU);  EP755899-A3 -- BR7606622-A   ASFALTOS VITORIA (ASFA-Non-standard);  DE1496123-A1   GRACE & CO W R (GRAC);  GB2169129-A   PPG IND INC (PITT)   JOHNSON H B,  KRIVAK T G,  LONGHINI D A;  US3351495-A   GRACE & CO W R (GRAC);  US4024323-A   EVANS PROD CO (EVAP)   VERSTEEGH W M;  US4237083-A   EVANS PROD CO (EVAP)   YOUNG J,  GEISSEL C H,  ZENCZAK P;  US5851502-A -- DE4427137-A1   DEGUSSA AG (DEGS)   ESCH H,  GOERL U,  KUHLMANN R,  RAUSCH R;  DE1496123-B   GRACE & CO W R (GRAC);  DE3545615-C   PPG IND INC (PITT)   JOHNSON H B,  KRIVAK T G,  LONGHINI D A;  GB2169129-A   PPG IND INC (PITT)   JOHNSON H B,  KRIVAK T G,  LONGHINI D A;  US3351495-A   GRACE & CO W R (GRAC);  US3445189-A   KONZ (ALKU);  US4024323-A   EVANS PROD CO (EVAP)   VERSTEEGH W M;  US4237083-A   EVANS PROD CO (EVAP)   YOUNG J,  GEISSEL C H,  ZENCZAK P;  US4874594-A   RHONE-POULENC CHIM (RHON)   CHEVALLIER Y;  US5034207-A   DEGUSSA AG (DEGS);  US5110574-A   DEGUSSA AG (DEGS)   REINHARDT H,  BECKER A,  KUHLMANN R,  NAUROTH P;  US5342598-A   RHONE-POULENC CHIMI (RHON)   PERSELLO P J;  US5605569-A   PPG IND INC (PITT)   WANG R C,  SWIFT H E,  BOYER J L,  KRIVAK T G;  EP755899-B1 -- BR7606622-A   ASFALTOS VITORIA (ASFA-Non-standard);  DE1496123-B   GRACE & CO W R (GRAC);  GB2169129-A   PPG IND INC (PITT)   JOHNSON H B,  KRIVAK T G,  LONGHINI D A;  US3351495-A   GRACE & CO W R (GRAC);  US4024323-A   EVANS PROD CO (EVAP)   VERSTEEGH W M;  US4237083-A   EVANS PROD CO (EVAP)   YOUNG J,  GEISSEL C H,  ZENCZAK P;  JP2978118-B2 -- JP07149514-A   ;  US6077466-A -- DE15927278-A   ;  DE4427137-A1   DEGUSSA AG (DEGS)   ESCH H,  GOERL U,  KUHLMANN R,  RAUSCH R;  DE1496123-B   GRACE & CO W R (GRAC);  DE3545615-C   PPG IND INC (PITT)   JOHNSON H B,  KRIVAK T G,  LONGHINI D A;  GB2169129-A   PPG IND INC (PITT)   JOHNSON H B,  KRIVAK T G,  LONGHINI D A;  US3351495-A   GRACE & CO W R (GRAC);  US3445189-A   KONZ (ALKU);  US4024323-A   EVANS PROD CO (EVAP)   VERSTEEGH W M;  US4237083-A   EVANS PROD CO (EVAP)   YOUNG J,  GEISSEL C H,  ZENCZAK P;  US4874594-A   RHONE-POULENC CHIM (RHON)   CHEVALLIER Y;  US5034207-A   DEGUSSA AG (DEGS);  US5110574-A   DEGUSSA AG (DEGS)   REINHARDT H,  BECKER A,  KUHLMANN R,  NAUROTH P;  US5342598-A   RHONE-POULENC CHIMI (RHON)   PERSELLO P J;  US5605569-A   PPG IND INC (PITT)   WANG R C,  SWIFT H E,  BOYER J L,  KRIVAK T G;  US5851502-A   DEGUSSA AG (DEGS)   TUERK G,  SCHMIDT G,  SIRAY M,  MEIER K