(19)
(11) EP 3 891 312 A1

(12)

(43) Date of publication:
13.10.2021 Bulletin 2021/41

(21) Application number: 19891782.5

(22) Date of filing: 03.12.2019
(51) International Patent Classification (IPC): 
C22C 1/00(2006.01)
C22C 21/02(2006.01)
C22F 1/04(2006.01)
 C22C 21/00(2006.01)
C22F 1/00(2006.01)
(52) Cooperative Patent Classification (CPC):
C22F 1/04; C22C 21/00; C22C 21/14; C22C 21/06; C22C 21/16; C22F 1/00; C22C 21/02
(86) International application number:
PCT/US2019/064188
(87) International publication number:
WO 2020/117771 (11.06.2020 Gazette 2020/24)
(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: 03.12.2018 US 201862774661 P

(71) Applicant: Rio Tinto Alcan International Limited
Montréal, Québec H3B 0E3 (CA)

(72) Inventors:
  • FOURMANN, Jerome
    Medina, Ohio 44256 (US)
  • PARSON, Nicholas C.
    Kingston, Ontario K7L 4V3 (CA)

(74) Representative: Germain Maureau 
12, rue Boileau
69006 Lyon
69006 Lyon (FR)

   


(54) ALUMINUM EXTRUSION ALLOY