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(11)

EP 4 231 889 A1

(12)

(43) Date of publication: 30.08.2023 Bulletin 2023/35 (21) Application number: 21798803.9 (22) Date of filing: 21.10.2021

(51) International Patent Classification (IPC):  A47L 13/07(2006.01) A47L 17/08(2006.01) A47L 13/16(2006.01) (52) Cooperative Patent Classification (CPC): A47L 17/08; A47L 13/07; A47L 13/16 (86) International application number: PCT/IB2021/059717 (87) International publication number: WO 2022/084911 (28.04.2022 Gazette 2022/17)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 23.10.2020 IN 202041046317 (71) Applicant: 3M Innovative Properties Company Saint Paul, Minnesota 55133-3427 (US)	(72) Inventors: SHINDE, Shridhar B. Bangalore 560001 (IN) KATAGERI, Basavaraj Bangalore 560001 (IN) TUMAN, Scott J. Saint Paul, Minnesota 55133-3427 (US) BALDWIN, Mark W. Saint Paul, Minnesota 55133-3427 (US) (74) Representative: Vossius & Partner Patentanwälte Rechtsanwälte mbB  Siebertstrasse 3 81675 München 81675 München (DE)