(19)

(11)

EP 1 670 962 A2

(12)

(88) Date of publication A3: 01.09.2005 (43) Date of publication: 21.06.2006 Bulletin 2006/25 (21) Application number: 04820347.5 (22) Date of filing: 29.09.2004

(51) International Patent Classification (IPC):  C22C 19/05(1974.07) (86) International application number: PCT/US2004/031781 (87) International publication number: WO 2005/056852 (23.06.2005 Gazette 2005/25)

(84) Designated Contracting States: CH DE FR GB IT LI (30) Priority: 30.09.2003 US 675367 (71) Applicant: GENERAL ELECTRIC COMPANY Schenectady, NY 12345 (US)	(72) Inventors: JIANG, Liang Guilderland, NY 12084 (US) ZHAO, Ji-Cheng Latham, NY 12110 (US) FENG, Ganjiang Greenville, SC 29615 (US) (74) Representative: Bedford, Grant Richard et al London Patent Operation GE International Inc. 15 John Adam Street London WC2N 6LU London WC2N 6LU (GB)