(19)
(11) EP 1 232 289 A1

(12)

(43) Date of publication:
21.08.2002 Bulletin 2002/34

(21) Application number: 00975719.6

(22) Date of filing: 14.11.2000
(51) International Patent Classification (IPC)7C22B 7/00
(86) International application number:
PCT/CA0001/349
(87) International publication number:
WO 0103/6694 (25.05.2001 Gazette 2001/21)
(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: 15.11.1999 US 440485

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

(72) Inventors:
  • CHARLES, David, F.
    Farmington Hills, MI 48331 (US)
  • COURVAL, Greg, J.
    Napanee, Ontario K7R 3L2 (CA)
  • THOMAS, Michael, P.
    Farmington Hills, MI 48331 (US)
  • WHEELER, Michael, J.
    Kingston, Ontario K7L 3E5 (CA)
  • WILSON, Ian
    Banbury, Oxfordshire OX16 9TW (CA)

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

   


(54) METHOD OF APPLYING MARKING AGENT TO ALUMINUM SHEET FOR SCRAP SORTING PURPOSES