(19)

(11)

EP 1 668 612 A1

(12)

(43) Date of publication: 14.06.2006 Bulletin 2006/24 (21) Application number: 04751267.8 (22) Date of filing: 30.04.2004

(51) International Patent Classification (IPC):  G08B 13/14(1968.09) (86) International application number: PCT/US2004/013809 (87) International publication number: WO 2004/100098 (18.11.2004 Gazette 2004/47)

(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: 01.05.2003 US 466760 P (71) Applicant: MeadWestvaco Corporation Laurel, Maryland 20723 (US)	(72) Inventors: CAMPERO, Richard, J. Ellicott City, MD 21042 (US) WEEL, Martin, D. Silverado, CA 92676 (US) (74) Representative: Haines, Miles John L.S.  D Young & Co 120 Holborn London EC1N 2DY London EC1N 2DY (GB)