(19)
(11) EP 1 549 778 A1

(12)

(43) Date of publication:
06.07.2005 Bulletin 2005/27

(21) Application number: 03754054.9

(22) Date of filing: 09.10.2003
(51) International Patent Classification (IPC)7: C22C 21/12
(86) International application number:
PCT/JP2003/012938
(87) International publication number:
WO 2004/033740 (22.04.2004 Gazette 2004/17)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 09.10.2002 JP 2002296268
01.07.2003 US 483635 P

(71) Applicant: Showa Denko K.K.
Tokyo 105-8518 (JP)

(72) Inventors:
  • Yoshioka, Hiroki,SHOWA DENKO K.K.
    Oyama-shi,Tochigi 323-0811 (JP)
  • Yamanaka, Masaki,SHOWA DENKOK.K.
    Oyama-shi,Tochigi 323-0811 (JP)
  • Matsuoka, Hideaki
    Aichi-gun,Aichi 480-1111 (JP)

(74) Representative: Viering, Hans-Martin, Dipl.-Ing. 
Patent- und RechtsanwälteViering, Jentschura & Partner,Steindorfstrasse 6
80538 München
80538 München (DE)

   


(54) ALUMINUM ALLOY FOR CUTTING PROCESSING, AND ALUMINUM ALLOY WORKED ARTICLE MADE OF THE SAME