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(11)

EP 4 681 271 A1

(12)

(43) Date of publication: 21.01.2026 Bulletin 2026/04 (21) Application number: 24770123.8 (22) Date of filing: 14.03.2024

(51) International Patent Classification (IPC):  H01M 10/44(2006.01) H02J 7/00(2026.01) H01M 6/52(2006.01) C25C 1/12(2006.01) H01M 10/54(2006.01) H01M 10/42(2006.01) C25C 1/00(2006.01) C22B 26/12(2006.01) (52) Cooperative Patent Classification (CPC): C25C 1/12; H01M 10/54; H01M 10/44; H02J 7/00716; H02J 7/007194; C25C 7/06; Y02W 30/84 (86) International application number: PCT/IB2024/052447 (87) International publication number: WO 2024/189564 (19.09.2024 Gazette 2024/38)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 14.03.2023 IN 202311017105 (71) Applicant: Attero Recycling Pvt. Ltd. Roorkee, Uttarakhand 247661 (IN)

(72) Inventors: PRAKASH BARIK, Smruti Haridwar, Uttarakhand Roorkee 247661 (IN) PRABAHARAN, G. Haridwar, Uttarakhand Roorkee 247661 (IN) GUPTA, Nitin Haridwar, Uttarakhand Roorkee 247661 (IN) TYAGI, Anuj Haridwar, Uttarakhand Roorkee 247661 (IN) JOSHI, Manoj Haridwar, Uttarakhand Roorkee 247661 (IN) SINGH, Khadak Haridwar, Uttarakhand Roorkee 247661 (IN) (74) Representative: Latscha Schöllhorn Partner AG  Grellingerstrasse 60 4052 Basel 4052 Basel (CH)