(19)

(11)

EP 4 584 429 A2

(12)

(88) Date of publication A3: 25.04.2024 (43) Date of publication: 16.07.2025 Bulletin 2025/29 (21) Application number: 23863842.3 (22) Date of filing: 08.09.2023

(51) International Patent Classification (IPC):  C25C 3/00(2006.01) C25C 3/02(2006.01) C25C 3/08(2006.01) C25B 1/01(2021.01) C25C 7/00(2006.01) (52) Cooperative Patent Classification (CPC): C25C 3/34; C25C 7/005; C25C 7/06; C25C 7/025; C25C 3/02 (86) International application number: PCT/US2023/032319 (87) International publication number: WO 2024/054650 (14.03.2024 Gazette 2024/11)

(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: KH MA MD TN (30) Priority: 09.09.2022 US 202263405036 P (71) Applicant: Phoenix Tailings, Inc. Woburn, MA 01801 (US)	(72) Inventors: VILLALON, Thomas Anthony Jr. Boston, MA 02116 (US) SALVUCCI, Richard Robert Quincy, MA 02169 (US) HUTCHESON, Henry Chase Malden, MA 02148 (US) (74) Representative: Hoffmann Eitle  Patent- und Rechtsanwälte PartmbB Arabellastraße 30 81925 München 81925 München (DE)