(19)

(11)

EP 2 094 144 A2

(12)

(88) Date of publication A3: 24.07.2008 (43) Date of publication: 02.09.2009 Bulletin 2009/36 (21) Application number: 07844445.2 (22) Date of filing: 19.10.2007

(51) International Patent Classification (IPC):  A47L 13/16(2006.01) A47L 17/08(2006.01) (86) International application number: PCT/US2007/081939 (87) International publication number: WO 2008/055015 (08.05.2008 Gazette 2008/19)

(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 MT NL PL PT RO SE SI SK TR (30) Priority: 31.10.2006 US 590509 (71) Applicant: 3M Innovative Properties Company St. Paul MN 55133-3427 (US)

(72) Inventors: WARMKA, Bridget K. Saint Paul, Minnesota 55133-3427 (US) PINNOW, Bobbi L. Saint Paul, Minnesota 55133-3427 (US) LANG, Arthur V. Saint Paul, Minnesota 55133-3427 (US) DOTTERMAN, Perry S. Saint Paul, Minnesota 55133-3427 (US) SKULLEY, Thomas G. Saint Paul, Minnesota 55133-3427 (US) (74) Representative: Hill, Cecilia Ann  3M United Kingdom PLC 3M Centre Cain Road Bracknell Berks RG12 8HT Bracknell Berks RG12 8HT (BE)