(19)

(11)

EP 1 680 259 A2

(12)

(88) Date of publication A3: 09.06.2005 (43) Date of publication: 19.07.2006 Bulletin 2006/29 (21) Application number: 04757311.8 (22) Date of filing: 27.07.2004

(51) International Patent Classification (IPC):  B24D 3/28(1968.09) B24D 11/04(1968.09) (86) International application number: PCT/US2004/024090 (87) International publication number: WO 2005/035193 (21.04.2005 Gazette 2005/16)

(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: 23.09.2003 US 668410 (71) Applicant: 3M Innovative Properties Company St. Paul, Minnesota 55133-3427 (US)	(72) Inventors: CULLER, Scott, R. 3M Center P.O. Box 33427 MN 55133-3427 (US) HAAS, John, D. 3M Center P.O. Box 33427 55133-3427 (US) SIMONS, Jeffrey, R. 3M Center P.O. Box 33427 55133-3427 (US) (74) Representative: Vossius & Partner  Siebertstrasse 3 81675 München 81675 München (DE)