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(11)

EP 4 314 366 A1

(12)

(43) Date of publication: 07.02.2024 Bulletin 2024/06 (21) Application number: 22723238.6 (22) Date of filing: 30.03.2022

(51) International Patent Classification (IPC):  C22C 1/04(2023.01) C22C 9/06(2006.01) E21B 10/00(2006.01) C22C 29/08(2006.01) C22C 1/10(2023.01) C22C 32/00(2006.01) C22C 9/05(2006.01) (52) Cooperative Patent Classification (CPC): C22C 1/0425; C22C 9/06; C22C 32/0052; C22C 1/1036; C22C 9/05; C22C 29/08 (86) International application number: PCT/US2022/022662 (87) International publication number: WO 2022/212588 (06.10.2022 Gazette 2022/40)

(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: 01.04.2021 US 202163169669 P (71) Applicant: Oerlikon Metco (US) Inc. Westbury NY 11590 (US)	(72) Inventors: VECCHIO, James Nathaniel Westbury, New York 11590 (US) BELL, Andy Westbury, New York 11590 (US) WANG, Zhongming Westbury, NY 11590 (US) (74) Representative: Aera A/S  Niels Hemmingsens Gade 10, 5th Floor 1153 Copenhagen K 1153 Copenhagen K (DK)