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(11)

EP 3 969 205 A1

(12)

(43) Date of publication: 23.03.2022 Bulletin 2022/12 (21) Application number: 20726396.3 (22) Date of filing: 14.05.2020

(51) International Patent Classification (IPC):  B22D 18/04(2006.01) B22D 27/00(2006.01) B22D 18/06(2006.01) (52) Cooperative Patent Classification (CPC): B22D 18/04; B22D 18/06; B22D 27/003; B22D 17/28; B22D 17/145 (86) International application number: PCT/EP2020/063547 (87) International publication number: WO 2020/229634 (19.11.2020 Gazette 2020/47)

(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: 14.05.2019 US 201916412204 (71) Applicant: Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V. 80686 München (DE)	(72) Inventors: WÖSTMANN, Franz-Josef 28359 Bremen (DE) PILLE, Christoph 28359 Bremen (DE) BUSSE, Matthias 28359 Bremen (DE) (74) Representative: Pfenning, Meinig & Partner mbB  Patent- und Rechtsanwälte Joachimsthaler Straße 10-12 10719 Berlin 10719 Berlin (DE)