(19)

(11)

EP 4 580 985 A1

(12)

(43) Date of publication: 09.07.2025 Bulletin 2025/28 (21) Application number: 23858496.5 (22) Date of filing: 30.08.2023

(51) International Patent Classification (IPC):  B81C 1/00(2006.01) H04R 1/00(2006.01) B81B 3/00(2006.01) H05K 1/18(2006.01) (52) Cooperative Patent Classification (CPC): H04R 17/00; H04R 31/00; H05K 3/4691; H05K 3/4697; H05K 2203/308; H05K 2201/09109; H05K 2201/09872 (86) International application number: PCT/CA2023/051151 (87) International publication number: WO 2024/044853 (07.03.2024 Gazette 2024/10)

(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: 30.08.2022 US 202263402425 P (71) Applicant: The University of British Columbia Vancouver, British Columbia V6T 1Z3 (CA)	(72) Inventors: CRETU, Edmond Vancouver, British Columbia V6T 1Z3 (CA) GERARDO, Carlos D. Vancouver, British Columbia V6T 1Z3 (CA) ROHLING, Robert Vancouver, British Columbia V6T 1Z3 (CA) (74) Representative: Patel, Binesh  Beuro IP Limited 11 St. Paul's Square Birmingham B3 1RB Birmingham B3 1RB (GB)