(19)

(11)

EP 1 678 801 A1

(12)

(43) Date of publication: 12.07.2006 Bulletin 2006/28 (21) Application number: 04794943.3 (22) Date of filing: 13.10.2004

(51) International Patent Classification (IPC):  H02G 15/117(1980.01) H02G 15/076(1980.01) (86) International application number: PCT/US2004/033715 (87) International publication number: WO 2005/039008 (28.04.2005 Gazette 2005/17)

(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: 14.10.2003 MX PA03009395 (71) Applicant: 3M Innovative Properties Company St. Paul, MN 55133-3427 (US)	(72) Inventor: SANCHEZ DE APARICIO, Eduardo J., Col. Santa Fe, 01210 (MX) (74) Representative: von Kreisler Selting Werner  Patentanwälte Deichmannhaus am Dom Bahnhofsvorplatz 1 50667 Köln 50667 Köln (DE)