(19)

(11)

EP 4 277 752 A1

(12)

(43) Date of publication: 22.11.2023 Bulletin 2023/47 (21) Application number: 22704425.2 (22) Date of filing: 14.01.2022

(51) International Patent Classification (IPC):  B03B 9/04(2006.01) B02C 1/14(2006.01) C22B 7/04(2006.01) B02C 1/00(2006.01) (52) Cooperative Patent Classification (CPC): B03B 9/04; C22B 7/04; B02C 1/005; B02C 1/14; C22B 7/005 (86) International application number: PCT/IB2022/050294 (87) International publication number: WO 2022/153231 (21.07.2022 Gazette 2022/29)

(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: 15.01.2021 WO PCT/IB2021/050291 (71) Applicant: Addforce Services Ltd 1208 Genève (CH)	(72) Inventor: WALANDER, Tom 02780 Espoo (FI) (74) Representative: Grosfillier, Philippe  André Roland SA IP Attorneys & Services Avenue Collonges 21 1004 Lausanne 1004 Lausanne (CH)