(19)

(11)

EP 4 816 159 A2

(12)

(88) Date of publication A3: 27.11.2025 (43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24927531.4 (22) Date of filing: 27.11.2024

(51) International Patent Classification (IPC):  B32B 7/023(2019.01) B32B 3/28(2006.01) B82Y 40/00(2011.01) B32B 27/18(2006.01) B82Y 30/00(2011.01) (52) Cooperative Patent Classification (CPC): B82Y 30/00; G02B 5/3083; G02B 1/002; G02B 17/004; B82Y 20/00 (86) International application number: PCT/US2024/057739 (87) International publication number: WO 2025/183767 (04.09.2025 Gazette 2025/36)

(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: 29.11.2023 US 202363603846 P (71) Applicant: The Regents of the University of Michigan Ann Arbor, Michigan 48109-2590 (US)	(72) Inventors: LU, Jun Ann Arbor, Michigan 48105 (US) KOTOV, Nicholas A. Ypsilanti, Michigan 48198 (US) (74) Representative: Witte, Weller & Partner Patentanwälte mbB  Postfach 10 54 62 70047 Stuttgart 70047 Stuttgart (DE)