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EP 4 469 608 A1

(12)

(43) Date of publication: 04.12.2024 Bulletin 2024/49 (21) Application number: 23701438.6 (22) Date of filing: 20.01.2023

(51) International Patent Classification (IPC):  C21D 8/02(2006.01) C22C 38/02(2006.01) C22C 38/06(2006.01) C22C 38/12(2006.01) C22C 38/22(2006.01) C22C 38/38(2006.01) C21D 9/46(2006.01) C22C 38/04(2006.01) C22C 38/08(2006.01) C22C 38/14(2006.01) C22C 38/28(2006.01) (52) Cooperative Patent Classification (CPC): C21D 8/0205; C21D 8/0263; C21D 9/46; C21D 2211/005; C22C 38/14; C22C 38/08; C22C 38/02; C22C 38/38; C22C 38/04; C22C 38/12; C22C 38/06; C22C 38/28; C22C 38/22 (86) International application number: PCT/EP2023/051306 (87) International publication number: WO 2023/144019 (03.08.2023 Gazette 2023/31)

(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: KH MA MD TN (30) Priority: 25.01.2022 EP 22153227 (71) Applicant: Tata Steel IJmuiden B.V. 1951 JZ Velsen-Noord (NL)	(72) Inventors: RIJKENBERG, Rolf, Arjan 1970 CA IJMUIDEN (NL) AARNTS, Maxim, Peter 1970 CA IJmuiden (NL) CHEZAN, Anton, Romulus 1970 CA IJMUIDEN (NL) (74) Representative: Group Intellectual Property Services  c/o Tata Steel Nederland Technology B.V. P.O. Box 10000 - 3G.37 1970 CA IJmuiden 1970 CA IJmuiden (NL)