(19)

(11)

EP 4 816 804 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24783594.5 (22) Date of filing: 27.09.2024

(51) International Patent Classification (IPC):  G01N 23/20025(2018.01) G02B 21/32(2006.01) H01J 37/20(2006.01) G01N 21/01(2006.01) G01N 23/2204(2018.01) G21K 1/00(2026.01) B01L 3/00(2006.01) G01N 21/63(2006.01) (52) Cooperative Patent Classification (CPC): G02B 21/32; H01J 37/20; G01N 23/20025; G01N 23/2204; B01L 3/502715; H01J 37/26; H01J 37/226; H01J 2237/2007 (86) International application number: PCT/EP2024/077270 (87) International publication number: WO 2025/113845 (05.06.2025 Gazette 2025/23)

(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: 30.11.2023 GB 202318326 (71) Applicant: UCL Ventures Limited London WC1E 6BT (GB)	(72) Inventors: BARKER, Peter Berkhamsted Hertfordshire HP4 2PB (GB) RADEMACHER, Markus Berkhamsted Hertfordshire HP4 2PB (GB) STEWART, Andrew Berkhamsted Hertfordshire HP4 2PB (GB) (74) Representative: Barker Brettell LLP  100 Hagley Road Edgbaston Birmingham, West Midlands B16 8QQ Birmingham, West Midlands B16 8QQ (GB)