(19)

(11)

EP 4 150 658 A1

(12)

(43) Date of publication: 22.03.2023 Bulletin 2023/12 (21) Application number: 21742481.1 (22) Date of filing: 14.05.2021

(51) International Patent Classification (IPC):  H01J 49/00(2006.01) G16C 20/00(2019.01) (52) Cooperative Patent Classification (CPC): H01J 49/0036; G16C 20/20; G16C 20/70; G06N 20/00 (86) International application number: PCT/IB2021/000330 (87) International publication number: WO 2021/229301 (18.11.2021 Gazette 2021/46)

(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: 14.05.2020 US 202063024987 P (71) Applicant: DH Technologies Development Pte. Ltd. Singapore 739256 (SG)	(72) Inventor: RYUMIN, Pavel Concord, ON L4K 4V8 (CA) (74) Representative: J A Kemp LLP  80 Turnmill Street London EC1M 5QU London EC1M 5QU (GB)