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(11)

EP 1 942 850 A1

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(43) Date of publication: 16.07.2008 Bulletin 2008/29 (21) Application number: 06789658.9 (22) Date of filing: 09.08.2006

(51) International Patent Classification (IPC):  A61F 11/14(2006.01) H04R 1/10(2006.01) H04R 5/033(2006.01) (86) International application number: PCT/US2006/031150 (87) International publication number: WO 2007/027391 (08.03.2007 Gazette 2007/10)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 29.08.2005 US 215611 (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)	(72) Inventors: SATO, Luciana, M. 13181-900 Sao Paulo (BR) GABAS, Glaucia, C. 13181-900 Sao Paulo (BR) REMER, Dean, M. Saint Paul, MN 55133-3427 (US) INSLEY, Thomas, I. Saint Paul, MN 55133-3427 (US) (74) Representative: Vossius & Partner  Siebertstrasse 4 81675 München 81675 München (DE)