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(11)

EP 4 816 335 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24813564.2 (22) Date of filing: 12.11.2024

(51) International Patent Classification (IPC):  C04B 41/00(2006.01) C04B 41/87(2006.01) C04B 41/45(2006.01) (52) Cooperative Patent Classification (CPC): C04B 41/009; C04B 41/4543; C04B 41/4537; C04B 41/84; C04B 41/4922; C04B 2111/00793; F01N 3/0222   C-Sets: C04B 41/4543, C04B 41/463, C04B 41/4922, C04B 41/5016, C04B 41/502, C04B 41/5031; C04B 41/009, C04B 38/0006; C04B 41/4537, C04B 41/463, C04B 41/4922, C04B 41/5016, C04B 41/502, C04B 41/5031; (86) International application number: PCT/US2024/055422 (87) International publication number: WO 2025/117176 (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: 27.11.2023 US 202363602907 P (71) Applicant: Corning Incorporated Corning, New York 14831 (US)	(72) Inventor: JOHNSON, Benedict Yorke Horseheads, New York 14845 (US) (74) Representative: Elkington and Fife LLP  Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)