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(11)

EP 1 651 373 A1

(12)

(43) Date of publication: 03.05.2006 Bulletin 2006/18 (21) Application number: 04771114.8 (22) Date of filing: 23.07.2004

(51) International Patent Classification (IPC):  B22D 11/06(1968.09) B22D 11/124(1974.07) B22D 11/00(1968.09) (86) International application number: PCT/JP2004/010977 (87) International publication number: WO 2005/007321 (27.01.2005 Gazette 2005/04)

(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 PL PT RO SE SI SK TR (30) Priority: 23.07.2003 JP 2003278297 29.07.2003 US 490512 P (71) Applicant: Showa Denko K.K. Tokyo 105-8518 (JP)	(72) Inventors: HAGIWARA, Yasuhisa, c/o Oyama Regional Office Oyama-shi, Tochigi 323-0811 (JP) YANAGIMOTO, Shigeru Kitakata-shi, Fukushima, 966-0845 (JP) (74) Representative: Viering, Jentschura & Partner  Steinsdorfstrasse 6 80538 München 80538 München (DE)