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(11)

EP 1 664 860 A1

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(43) Date of publication: 07.06.2006 Bulletin 2006/23 (21) Application number: 04788684.1 (22) Date of filing: 13.09.2004

(51) International Patent Classification (IPC):  G02B 5/12(1968.09) G02B 6/00(1985.01) G02B 5/04(1968.09) (86) International application number: PCT/US2004/029603 (87) International publication number: WO 2005/026793 (24.03.2005 Gazette 2005/12)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 12.09.2003 US 662085 10.09.2004 US 939184 (71) Applicant: 3M Innovative Properties Company St. Paul, MN 55133-3427 (US)	(72) Inventors: JONES, Clinton, L. Saint Paul, MN 55133-3427 (US) KOLB, Brant, U. Saint Paul, MN 55133-3427 (US) GOENNER, Emily, S. Saint Paul, MN 55133-3427 (US) BRADY, John, T. Saint Paul, MN 55133-3427 (US) HAAK, Christopher, A. Saint Paul, MN 55133-3427 (US) (74) Representative: Vossius & Partner  Siebertstrasse 4 81675 München 81675 München (DE)