(19)

(11)

EP 1 175 270 A1

(12)

(43) Date of publication: 30.01.2002 Bulletin 2002/05 (21) Application number: 01907998.7 (22) Date of filing: 05.03.2001

(51) International Patent Classification (IPC)7: B21C 23/00 (86) International application number: PCT/GB0100/939 (87) International publication number: WO 0164/363 (07.09.2001 Gazette 2001/36)

(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: 03.03.2000 GB 0005060 (71) Applicant: KINGS COLLEGE LONDON London WC2R 2LS (GB)	(72) Inventors: CLODE, Michael, Paul London SW19 3EQ (GB) ORFANOS, George, Dimitrios GR-174 55 Athens T.K. (GR) (74) Representative: Kemp, Paul Geoffrey  Brookes Batchellor 102-108 Clerkenwell Road London EC1M 5SA London EC1M 5SA (GB)