(19)

(11)

EP 4 244 184 A2

(12)

(88) Date of publication A3: 14.07.2022 (43) Date of publication: 20.09.2023 Bulletin 2023/38 (21) Application number: 21810560.9 (22) Date of filing: 09.11.2021

(51) International Patent Classification (IPC):  C01B 32/184(2017.01) H01G 11/36(2013.01) H01G 11/86(2013.01) C01B 32/186(2017.01) H01G 11/70(2013.01) H01M 4/66(2006.01) (52) Cooperative Patent Classification (CPC): C01B 32/184; C01B 32/186; H01M 4/663; H01M 4/667; H01G 11/36; H01G 11/70; H01G 11/86; H01G 11/84; Y02E 60/10; Y02E 60/13 (86) International application number: PCT/EP2021/081127 (87) International publication number: WO 2022/101210 (19.05.2022 Gazette 2022/20)

(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: 10.11.2020 US 202063111654 P (71) Applicant: B2D Holding GmbH 56626 Andernach (DE)	(72) Inventor: GRADY, Eldad 56626 Andernach (DE) (74) Representative: dompatent von Kreisler Selting Werner - Partnerschaft von Patent- und Rechtsanwälten mbB  Deichmannhaus am Dom Bahnhofsvorplatz 1 50667 Köln 50667 Köln (DE)