(19)

(11)

EP 1 256 022 A2

(12)

(88) Date of publication A3: 21.02.2002 (43) Date of publication: 13.11.2002 Bulletin 2002/46 (21) Application number: 00990319.6 (22) Date of filing: 22.12.2000

(51) International Patent Classification (IPC)7: G02B 1/11 (86) International application number: PCT/US0035/102 (87) International publication number: WO 0105/7579 (09.08.2001 Gazette 2001/32)

(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: 02.02.2000 US 496634 (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)	(72) Inventor: AUFDERHEIDE, Brian, E. Saint Paul, MN 55133-3427 (US) (74) Representative: VOSSIUS & PARTNER  Siebertstrasse 4 81675 München 81675 München (DE)