(19)
(11) EP 4 077 749 A1

(12)

(43) Date of publication:
26.10.2022 Bulletin 2022/43

(21) Application number: 20829531.1

(22) Date of filing: 17.12.2020
(51) International Patent Classification (IPC): 
C22B 7/00(2006.01)
C22B 9/14(2006.01)
 C22B 9/04(2006.01)
(52) Cooperative Patent Classification (CPC):
C22B 9/04; C22B 9/14; C22B 7/005; Y02P 10/20
(86) International application number:
PCT/EP2020/086741
(87) International publication number:
WO 2021/122974 (24.06.2021 Gazette 2021/25)
(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 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: 20.12.2019 SE 1951540

(71) Applicant: Nordic Brass Gusum AB
610 40 Gusum (SE)

(72) Inventors:
  • STENMAN, Johan
    974 44 Luleå (SE)
  • MAGNUSSON, Marcel
    974 41 Luleå (SE)
  • YE, Guozhu
    977 53 Luleå (SE)

(74) Representative: Groth & Co. KB 
P.O. Box 6107
102 32 Stockholm
102 32 Stockholm (SE)

   


(54) METHOD FOR REMOVING LEAD FROM BRASS