(19)

(11)

EP 1 368 696 A1

(12)

(43) Date of publication: 10.12.2003 Bulletin 2003/50 (21) Application number: 02707092.9 (22) Date of filing: 21.02.2002

(51) International Patent Classification (IPC)7: G02F 1/13357 (86) International application number: PCT/IT0200/105 (87) International publication number: WO 0207/3306 (19.09.2002 Gazette 2002/38)

(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: 12.03.2001 IT RM20010124 (71) Applicant: Universita' Degli Studi Di Roma "La Sapienza" 00185 Roma (IT)	(72) Inventor: BECCHERELLI,RUni.degli Studi di Roma"La Sapienza" I-00184 Roma (IT) (74) Representative: Leone, Mario et al Società Italiana Brevetti S.p.A.Piazza di Pietra 39 00186 Roma 00186 Roma (IT)