(19)

(11)

EP 0 997 017 A2

(12)

(88) Date of publication A3: 14.05.1999 (43) Date of publication: 03.05.2000 Bulletin 2000/18 (21) Application number: 98937934.2 (22) Date of filing: 21.05.1998

(51) International Patent Classification (IPC)7: H04L 9/30 (86) International application number: PCT/US9810/392 (87) International publication number: WO 9854/864 (03.12.1998 Gazette 1998/48)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 28.05.1997 US 864839 18.06.1997 US 878189 29.08.1997 US 920504 17.09.1997 US 932639 28.10.1997 US 959351 (71) Applicants: Young, Adam Lucas New York, NY 10025 (US) Yung, Marcel Mordechay New York, NY 10025 (US)	(72) Inventors: Young, Adam Lucas New York, NY 10025 (US) Yung, Marcel Mordechay New York, NY 10025 (US) (74) Representative: Makovski, Priscilla Mary et al BARKER BRETTELL 138 Hagley Road EdgbastonBirmingham B16 9PW EdgbastonBirmingham B16 9PW (GB)