(19)

(11)

EP 1 514 276 A1

(12)

(43) Date of publication: 16.03.2005 Bulletin 2005/11 (21) Application number: 03745327.1 (22) Date of filing: 25.03.2003

(51) International Patent Classification (IPC)7: G11C 19/08, G11C 13/02 (86) International application number: PCT/GB2003/001266 (87) International publication number: WO 2003/083874 (09.10.2003 Gazette 2003/41)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 27.03.2002 GB 0207160 (71) Applicant: Eastgate Investments Limited Hamilton,HM-EX Bermuda (BM)	(72) Inventor: COWBURN,R.P.University of DurhamDep.of Physics Durham DH1 3LE (GB) (74) Representative: Wilson, Peter  Novagraaf Patents Limited,The Crescent,54 Blossom Street York YO24 1AP York YO24 1AP (GB)