(19)
(11) EP 1 244 819 A1

(12)

(43) Date of publication:
02.10.2002 Bulletin 2002/40

(21) Application number: 00984732.8

(22) Date of filing: 15.12.2000
(51) International Patent Classification (IPC)7C22F 1/04, C22F 1/047, C21D 9/573
(86) International application number:
PCT/CA0001/522
(87) International publication number:
WO 0104/4532 (21.06.2001 Gazette 2001/25)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 17.12.1999 US 467306

(71) Applicant: ALCAN INTERNATIONAL LIMITED
MontrealQuebec H3A 3G2 (CA)

(72) Inventors:
  • GUPTA, Alok, Kumar
    Kingston, Ontario K7M 1F2 (CA)
  • LAGACE, Helene, P.
    Kingston, Ontario K7L 4V4 (CA)
  • JEFFREY, Paul, W.
    Kingston, Ontario K7M 5A6 (CA)
  • URBANEK, Jaroslav
    Anna Maria, FL 34216 (US)
  • DAVENPORT, Christopher John
    Bilton,Rugby,Warwickshire CV22 7RS (GB)

(74) Representative: Gaunt, Robert John 
Stevens, Hewlett & PerkinsHalton House20/23 Holborn
London EC1N 2JD
London EC1N 2JD (GB)

   


(54) METHOD OF QUENCHING ALLOY SHEET TO MINIMIZE DISTORTION