(19)

(11)

EP 4 816 115 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24828221.2 (22) Date of filing: 21.11.2024

(51) International Patent Classification (IPC):  B22F 3/11(2006.01) B01D 53/02(2006.01) C22C 1/08(2006.01) B01J 20/02(2006.01) (52) Cooperative Patent Classification (CPC): C22C 1/08; B22F 3/1134; B22F 3/1115; B01D 53/02; B22F 3/227; B01J 20/3042; B01J 20/3064; B01J 20/3078; B01J 20/28057; B01J 20/28054; B01J 20/28045; B01J 20/3433; B01J 20/3441; B01D 2257/504; Y02C 20/40 (86) International application number: PCT/US2024/056873 (87) International publication number: WO 2025/117324 (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: 30.11.2023 US 202363604645 P 30.11.2023 US 202363604659 P (71) Applicant: Corning Incorporated Corning, New York 14831 (US)	(72) Inventor: CHEN, Guohua Painted Post, New York 14870 (US) (74) Representative: Elkington and Fife LLP  Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)