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EP 4 816 747 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24898650.7 (22) Date of filing: 26.11.2024

(51) International Patent Classification (IPC):  F25B 43/04(2006.01) F15B 15/06(2006.01) F25B 15/09(2006.01) B01D 71/02(2006.01) F25B 15/04(2006.01) F25B 35/02(2006.01) (52) Cooperative Patent Classification (CPC): Y02A 30/27; Y02B 30/62; F25B 15/04; F25B 15/09; F25B 35/02; F25B 30/04; F25B 37/00; F25B 43/046; B01D 71/02231; B01D 71/0221 (86) International application number: PCT/US2024/057495 (87) International publication number: WO 2025/117565 (05.06.2025 Gazette 2025/23)

(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: 29.11.2023 US 202363603956 P (71) Applicant: Stone Mountain Technologies, Inc. Piney Flats, TN 37686 (US)	(72) Inventors: GARRABRANT, Michael A. Unicoi, TN 37692 (US) BLAYLOCK, Matthew C. Gray, TN 37615 (US) (74) Representative: Epping - Hermann - Fischer  Patentanwaltsgesellschaft mbH Schloßschmidstraße 5 80639 München 80639 München (DE)