(19)

(11)

EP 1 368 711 A1

(12)

(43) Date of publication: 10.12.2003 Bulletin 2003/50 (21) Application number: 01995254.8 (22) Date of filing: 28.11.2001

(51) International Patent Classification (IPC)7: G03F 9/00, G21K 5/00, C03C 15/00 (86) International application number: PCT/US0144/547 (87) International publication number: WO 0206/9054 (06.09.2002 Gazette 2002/36)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (30) Priority: 24.02.2001 US 271136 P (71) Applicant: CORNING INCORPORATED Corning, N.Y. 14831 (US)	(72) Inventors: MOORE, Lisa, A. Corning, NY 14830 (US) SMITH, Charlene, M. Corning, NY 14830 (US) (74) Representative: Poole, Michael John  Corning Communications Ltd.,Patent and Licensing Dpt.,Quantum House,Maylands Avenue Hemel Hempstead, Herts. HP2 7DE Hemel Hempstead, Herts. HP2 7DE (GB)