(19)

(11)

EP 1 232 503 A1

(12)

(43) Date of publication: 21.08.2002 Bulletin 2002/34 (21) Application number: 00987559.2 (22) Date of filing: 27.11.2000

(51) International Patent Classification (IPC)7: H01F 1/44 (86) International application number: PCT/GB0004/517 (87) International publication number: WO 0103/9217 (31.05.2001 Gazette 2001/22)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 25.11.1999 GB 9927911 (71) Applicant: Nanomagnetics Limited Bath BA1 2EW (GB)	(72) Inventor: MAYES, Eric CliftonBristol BS8 3HN (GB) (74) Representative: Nash, David Allan  Haseltine Lake & Co.,Imperial House, 15-19 Kingsway London WC2B 6UD London WC2B 6UD (GB)