(19)
(11) EP 4 055 212 A1

(12)

(43) Date of publication:
14.09.2022 Bulletin 2022/37

(21) Application number: 20804002.2

(22) Date of filing: 03.11.2020
(51) International Patent Classification (IPC): 
C25D 11/04(2006.01)
 C25D 11/18(2006.01)
(52) Cooperative Patent Classification (CPC):
C25D 11/04; C25D 11/18
(86) International application number:
PCT/SE2020/051056
(87) International publication number:
WO 2021/091458 (14.05.2021 Gazette 2021/19)
(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: 06.11.2019 SE 1951272

(71) Applicant: KTH Holding AB
100 44 Stockholm (SE)

(72) Inventors:
  • ZHANG, Fan
    187 63 Täby (SE)
  • PAN, Jinshan
    170 71 Solna (SE)

(74) Representative: Dehns 
St. Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) ANTI-CORROSION SURFACE MULTILAYER STRUCTURE FOR ALUMINUM COMPRISING CERIUM OXIDE PARTICLES AND A METHOD OF FORMING SUCH MULTILAYER STRUCTURE