(19)

(11)

EP 4 448 216 A1

(12)

(43) Date of publication: 23.10.2024 Bulletin 2024/43 (21) Application number: 23708465.2 (22) Date of filing: 28.02.2023

(51) International Patent Classification (IPC):  B24B 53/07(2006.01) B24B 53/047(2006.01) B24D 7/06(2006.01) B24D 3/00(2006.01) B24D 5/06(2006.01) (52) Cooperative Patent Classification (CPC): B24B 53/07; B24D 3/008; B24B 53/047; B24D 5/06; B24D 7/06 (86) International application number: PCT/EP2023/055010 (87) International publication number: WO 2023/208450 (02.11.2023 Gazette 2023/44)

(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: 27.04.2022 GB 202206093 (71) Applicant: Element Six (UK) Limited Didcot, Oxfordshire OX11 0QR (GB)	(72) Inventors: PENNA FRANCA, Luiz Fernando Harwell Campus Didcot Oxfordshire OX11 0QR (GB) GRAHAM, Christopher Harwell Campus Didcot Oxfordshire OX11 0QR (GB) (74) Representative: Brack, Paul et al Element Six (UK) Limited Group Intellectual Property Global Innovation Centre Harwell Oxford Didcot Oxfordshire OX11 0QR Didcot Oxfordshire OX11 0QR (GB)