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EP 4 824 544 A1

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(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24901859.9 (22) Date of filing: 12.12.2024

(51) International Patent Classification (IPC):  G01N 33/18(2006.01) C08B 37/16(2006.01) G01N 31/22(2006.01) (52) Cooperative Patent Classification (CPC): G01N 33/18; G01N 31/22; C08B 37/0015; C08L 5/16 (86) International application number: PCT/CA2024/051648 (87) International publication number: WO 2025/123135 (19.06.2025 Gazette 2025/25)

(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: 14.12.2023 US 202363610171 P 06.08.2024 US 202463679782 P 30.08.2024 US 202463689017 P (71) Applicant: Fredsense Technologies Corp. Calgary, AB T2A 6J4 (CA)

(72) Inventors: MAYALL, Robert Calgary, Alberta T2A 6J4 (CA) STIETZ, Maria Calgary, Alberta T2A 6J4 (CA) RENAUD-YOUNG, Margaret Calgary, Alberta T2A 6J4 (CA) GUEGUENIAT, Julia Calgary, Alberta T2A 6J4 (CA) WOODS, April Calgary, Alberta T2A 6J4 (CA) CHEN, Cheng Calgary, Alberta T2A 6J4 (CA) (74) Representative: Hertin und Partner Rechts- und Patentanwälte PartG mbB  Kurfürstendamm 63 10707 Berlin 10707 Berlin (DE)