(19)
(11) EP 4 402 785 A1

(12)

(43) Date of publication:
24.07.2024 Bulletin 2024/30

(21) Application number: 22870387.2

(22) Date of filing: 16.09.2022
(51) International Patent Classification (IPC): 
H02K 15/03(2006.01)
H02K 1/2783(2022.01)
 H02K 1/278(2022.01)
(52) Cooperative Patent Classification (CPC):
H02K 1/2783; H02K 15/03; H02K 1/278; H02K 1/2792; H02K 1/2791
(86) International application number:
PCT/NO2022/050214
(87) International publication number:
WO 2023/043320 (23.03.2023 Gazette 2023/12)
(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: 17.09.2021 NO 20211119

(71) Applicant: Alva Industries AS
7038 Trondheim (NO)

(72) Inventors:
  • ZHANG, Zhaoqiang
    7038 Trondheim (NO)
  • JOHANNESSEN, Lars-Endre
    7038 Trondheim (NO)
  • BERGE, Halvard
    7038 Trondheim (NO)

(74) Representative: Curo AS 
Vestre Rosten 81
7075 Tiller
7075 Tiller (NO)

   


(54) METHOD FOR PRODUCTION OF A RING-SHAPED PERMANENT MAGNET STRUCTURE