(19)

(11)

EP 1 305 486 A1

(12)

(43) Date of publication: 02.05.2003 Bulletin 2003/18 (21) Application number: 01958975.3 (22) Date of filing: 17.07.2001

(51) International Patent Classification (IPC)7: E04F 15/14, E04F 19/06 (86) International application number: PCT/US0122/420 (87) International publication number: WO 0200/8543 (31.01.2002 Gazette 2002/05)

(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: 25.07.2000 JP 2000224053 (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)	(72) Inventor: MIYAMOTO, Shuji Kawasaki,Kanagawa 213-0002 (JP) (74) Representative: VOSSIUS & PARTNER  Siebertstrasse 4 81675 München 81675 München (DE)