(19)

(11)

EP 4 377 029 A1

(12)

(43) Date of publication: 05.06.2024 Bulletin 2024/23 (21) Application number: 22758317.6 (22) Date of filing: 27.07.2022

(51) International Patent Classification (IPC):  B22F 3/11(2006.01) C22C 29/12(2006.01) C22C 32/00(2006.01) F01N 3/28(2006.01) C22C 29/06(2006.01) C22C 29/16(2006.01) F01N 3/20(2006.01) B22F 7/06(2006.01) (52) Cooperative Patent Classification (CPC): F01N 3/2026; F01N 3/2828; F01N 2330/06; F01N 2240/16; B22F 3/1115; B22F 2007/066; C22C 29/12; C22C 29/065; C22C 29/16; C22C 32/0026; C22C 33/0242; B22F 2999/00; C22C 33/0292; Y02T 10/12   C-Sets: B22F 2999/00, B22F 3/1115, C22C 33/0242; (86) International application number: PCT/US2022/038439 (87) International publication number: WO 2023/009575 (02.02.2023 Gazette 2023/05)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 28.07.2021 US 202163226455 P (71) Applicant: Corning Incorporated Corning, New York 14831 (US)	(72) Inventors: BEALL, Douglas Munroe Painted Post, New York 14870 (US) DESHMANE, Vishwanath Ganpat Painted Post, New York 14870 (US) (74) Representative: Sturm, Christoph  Patentanwälte Sturm Weilnau Franke Partnerschaft mbB Unter den Eichen 5 (Haus C-Süd) 65195 Wiesbaden 65195 Wiesbaden (DE)