(19)

(11)

EP 1 438 715 A1

(12)

(43) Date of publication: 21.07.2004 Bulletin 2004/30 (21) Application number: 02783999.2 (22) Date of filing: 02.10.2002

(51) International Patent Classification (IPC)7: G11B 7/00, G11B 7/20, G11B 7/24, G11B 5/09, G11B 11/00 (86) International application number: PCT/US2002/031378 (87) International publication number: WO 2003/044783 (30.05.2003 Gazette 2003/22)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR (30) Priority: 02.10.2001 US 326706 P (71) Applicant: Verification Technologies, Inc. Centerbrook, CT 06409 (US)	(72) Inventors: SELINFREUND, Richard Guilford, CT 06437 (US) VIG, Rakesh Durham, CT 06422 (US) (74) Representative: Lucas, Brian Ronald  Lucas & Co.135 Westhall Road Warlingham,Surrey CR6 9HJ Warlingham,Surrey CR6 9HJ (GB)