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(11)

EP 4 263 129 A1

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(43) Date of publication: 25.10.2023 Bulletin 2023/43 (21) Application number: 21827431.4 (22) Date of filing: 08.12.2021

(51) International Patent Classification (IPC):  B24B 23/03(2006.01) B24B 27/00(2006.01) B24B 41/00(2006.01) B24B 49/12(2006.01) (52) Cooperative Patent Classification (CPC): B24B 23/03; B24B 41/007; B24B 49/12; B24B 27/0038 (86) International application number: PCT/IB2021/061470 (87) International publication number: WO 2022/130129 (23.06.2022 Gazette 2022/25)

(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: 17.12.2020 US 202063199281 P (71) Applicant: 3M Innovative Properties Company Saint Paul, Minnesota 55133-3427 (US)

(72) Inventors: ECKEL, Joseph B. Saint Paul, Minnesota 55133-3427 (US) KNUDSON, Orlin B. Saint Paul, Minnesota 55133-3427 (US) SPRING, Erin D. Saint Paul, Minnesota 55133-3427 (US) HERBST, Nathan J. Saint Paul, Minnesota 55133-3427 (US) SANDERS, Rufus C. Saint Paul, Minnesota 55133-3427 (US) (74) Representative: De Clercq & Partners  Edgard Gevaertdreef 10a 9830 Sint-Martens-Latem 9830 Sint-Martens-Latem (BE)