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(11)

EP 4 771 700 A1

(12)

(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24773247.2 (22) Date of filing: 30.08.2024

(51) International Patent Classification (IPC):  H01M 10/42(2006.01) H01M 10/48(2006.01) H01M 10/44(2006.01) H01M 50/213(2021.01) (52) Cooperative Patent Classification (CPC): H01M 10/486; H01M 10/448; H01M 10/425; H01M 2010/4271; H01M 2010/4278; H01M 10/443; H01M 50/213; H01M 10/482; H01M 10/441 (86) International application number: PCT/US2024/044610 (87) International publication number: WO 2025/049863 (06.03.2025 Gazette 2025/10)

(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: 31.08.2023 US 202363535717 P 29.08.2024 US 202418820051 (71) Applicant: Eaglepicher Technologies, LLC Joplin, Missouri 64802 (US)	(72) Inventors: SANTEE, Stuart Guy Joplin, Missouri 64802 (US) PUGLIA, Frank Joseph Joplin, Missouri 64802 (US) FRUTSCHY, Kristopher John Joplin, Missouri 64802 (US) CAVANAGH, Kenneth Martin Joplin, Missouri 64802 (US) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)