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(11)

EP 3 687 666 A1

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(43) Date of publication: 05.08.2020 Bulletin 2020/32 (21) Application number: 19849785.1 (22) Date of filing: 19.08.2019

(51) International Patent Classification (IPC):  B01D 53/79(2006.01) B05B 7/12(2006.01) B05B 7/04(2006.01) (86) International application number: PCT/US2019/047116 (87) International publication number: WO 2020/037327 (20.02.2020 Gazette 2020/08)

(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: 17.08.2018 US 201862719277 P (71) Applicant: Berry Metal Company Harmony, PA 16037 (US)	(72) Inventors: GREEN, Edward, J. Sewickley, PA 15143 (US) DENGEL, Derek, S. Harmony, PA 16037 (US) (74) Representative: Barton, Matthew Thomas  Forresters IP LLP Skygarden Erika-Mann-Strasse 11 80636 München 80636 München (DE)