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EP 4 041 856 A1

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(43) Date of publication: 17.08.2022 Bulletin 2022/33 (21) Application number: 20875840.9 (22) Date of filing: 13.10.2020

(51) International Patent Classification (IPC):  C11D 3/386(2006.01) C11D 3/34(2006.01) C11D 3/20(2006.01) C11D 11/00(2006.01) (52) Cooperative Patent Classification (CPC): C11D 3/386; C11D 3/0068; C11D 11/0017; C11D 3/349; C11D 1/662; C11D 3/381; C11D 3/48; C11D 3/32; C11D 3/2096; D06M 16/003; D06M 23/06; D06M 23/16; D06M 16/00 (86) International application number: PCT/US2020/055429 (87) International publication number: WO 2021/076526 (22.04.2021 Gazette 2021/16)

(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: 13.10.2019 US 201962914552 P 05.11.2019 US 201962931213 P 25.03.2020 US 202062994810 P 10.07.2020 US 202016926514 12.10.2020 US 202017068806 (71) Applicant: Lindsay, Jeffrey Dean Appleton WI 54915 (US)

(72) Inventor: Lindsay, Jeffrey Dean Appleton WI 54915 (US) (74) Representative: Snaith, James Michael et al Kilburn & Strode LLP Lacon London 84 Theobalds Road London WC1X 8NL London WC1X 8NL (GB)