(19)

(11)

EP 4 505 586 A1

(12)

(43) Date of publication: 12.02.2025 Bulletin 2025/07 (21) Application number: 23715898.5 (22) Date of filing: 30.03.2023

(51) International Patent Classification (IPC):  H02K 35/04(2006.01) F02B 63/04(2006.01) H02K 7/18(2006.01) (52) Cooperative Patent Classification (CPC): H02K 35/04; H02K 7/1884; F02B 63/041; F02B 63/043; F02B 71/00; F02B 2043/106 (86) International application number: PCT/FI2023/050178 (87) International publication number: WO 2023/194655 (12.10.2023 Gazette 2023/41)

(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: 06.04.2022 FI 20225297 (71) Applicant: Ecogen Ab Oy 68800 Kolppi (FI)	(72) Inventor: KAUPPINEN, Sami 68800 Kolppi (FI) (74) Representative: Berggren Oy  P.O. Box 16 Eteläinen Rautatiekatu 10A 00101 Helsinki 00101 Helsinki (FI)