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(11)

EP 4 510 859 A1

(12)

(43) Date of publication: 26.02.2025 Bulletin 2025/09 (21) Application number: 23720939.0 (22) Date of filing: 20.04.2023

(51) International Patent Classification (IPC):  A24F 40/51(2020.01) H05K 1/02(2006.01) A24F 40/485(2020.01) H05K 1/18(2006.01) (52) Cooperative Patent Classification (CPC): A24F 40/51; A24F 40/485 (86) International application number: PCT/GB2023/051036 (87) International publication number: WO 2023/203330 (26.10.2023 Gazette 2023/43)

(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: 22.04.2022 CN 202210427988 (71) Applicant: Nicoventures Trading Limited London WC2R 3LA (GB)	(72) Inventors: BELL, Sally London WC2R 3LA (GB) WANG, Tianyi Nanshan District Shenzen (CN) LI, Zhiping Nanshan District Shenzen (CN) XU, Xiaofeng Nanshan District Shenzen (CN) (74) Representative: D Young & Co LLP  3 Noble Street London EC2V 7BQ London EC2V 7BQ (GB)