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EP 4 770 981 A2

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(88) Date of publication A3: 10.04.2025 (43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24772795.1 (22) Date of filing: 27.08.2024

(51) International Patent Classification (IPC):  C04B 38/00(2006.01) C04B 35/16(2006.01) B01D 53/14(2006.01) B01J 20/32(2006.01) C03C 14/00(2006.01) B01D 39/20(2006.01) B01J 20/28(2006.01) B01J 20/34(2006.01) (52) Cooperative Patent Classification (CPC): C04B 38/0006; C04B 35/16; C04B 2235/425; C04B 2235/5292; C04B 2235/528; C04B 2235/5296; C04B 2235/96; C04B 2235/5436; C04B 2235/3418; C04B 2235/6562; C04B 2235/6567; C04B 2235/349; C04B 2235/9615; C04B 2235/6021; C04B 2111/94; C04B 2111/0081; C04B 2111/00793; C04B 2111/00129; C03C 14/004; B01J 20/28045; B01J 20/3204; B01J 20/3441; B01D 53/1475; B01D 2257/504; B01D 39/201; B01D 39/2075; B01D 39/2062; B01D 2239/1208; B01D 2239/10; B01D 2239/0478; B01D 39/2013; B01D 39/2079; B01D 2239/0241; B01D 2239/0407; B01D 53/02; B01J 20/2803; B01J 20/20; Y02C 20/40   C-Sets: C04B 38/0006, C04B 35/16, C04B 38/0054, C04B 38/0067, C04B 38/067, C04B 38/068, C04B 38/0074, C04B 38/0096, C04B 38/0675; (86) International application number: PCT/US2024/043962 (87) International publication number: WO 2025/049428 (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: 30.08.2023 US 202363535334 P (71) Applicant: Corning Incorporated Corning, New York 14831 (US)	(72) Inventors: BEALL, Douglas Munroe Painted Post, New York 14870 (US) 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)