(19)

(11)

EP 1 768 802 A1

(12)

(43) Date of publication: 04.04.2007 Bulletin 2007/14 (21) Application number: 05753987.6 (22) Date of filing: 26.05.2005

(51) International Patent Classification (IPC):  B22F 1/00(2006.01) C22C 27/04(2006.01) C09C 1/62(2006.01) C22C 27/06(2006.01) (86) International application number: PCT/US2005/018423 (87) International publication number: WO 2005/118185 (15.12.2005 Gazette 2005/50)

(84) Designated Contracting States: BE DE ES FR GB IT (30) Priority: 28.05.2004 US 574929 P (71) Applicant: Praxair S.T. Technology, Inc. North Haven, CT 06473 (US)	(72) Inventors: JAROSINSKI, William, J., C. Carmal, IN 46032 (US) TEMPLES, Lewis, B. Plainfield, IN 46168 (US) (74) Representative: Schwan, Ivo  Schwan Schwan Schorer Patentanwälte Bauerstrasse 22 80796 München 80796 München (DE)