(19)

(11)

EP 4 799 183 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24800900.3 (22) Date of filing: 22.10.2024

(51) International Patent Classification (IPC):  G21B 1/19(2006.01) G21B 3/00(2006.01) G21B 1/03(2006.01) (52) Cooperative Patent Classification (CPC): G21B 1/03; G21B 1/19; G21B 3/008; Y02E 30/10 (86) International application number: PCT/GB2024/052700 (87) International publication number: WO 2025/088310 (01.05.2025 Gazette 2025/18)

(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: GE KH MA MD TN (30) Priority: 23.10.2023 GB 202316196 (71) Applicant: First Light Fusion Limited Yarnton, Oxfordshire OX5 1QU (GB)	(72) Inventors: COOKE, Ian Oxford Pioneer Park Mead Road Yarnton Oxfordshire OX5 1QU (GB) HAWKER, Nicholas Oxford Pioneer Park Mead Road Yarnton Oxfordshire OX5 1QU (GB) PECOVER, James Oxford Pioneer Park Mead Road Yarnton Oxfordshire OX5 1QU (GB) (74) Representative: Dehns  10 Old Bailey London EC4M 7NG London EC4M 7NG (GB)