(19)

(11)

EP 1 546 422 A1

(12)

(43) Date of publication: 29.06.2005 Bulletin 2005/26 (21) Application number: 03794565.6 (22) Date of filing: 04.09.2003

(51) International Patent Classification (IPC)7: C22C 1/05, C22C 27/04 (86) International application number: PCT/US2003/027439 (87) International publication number: WO 2004/022801 (18.03.2004 Gazette 2004/12)

(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: 04.09.2002 US 408087 P (71) Applicant: OSRAM SYLVANIA INC. Danvers, MA 01923 (US)	(72) Inventor: WINNICKA, Maria, B. Sayre, PA 18840 (US) (74) Representative: Lambert, Ian Robert et al Wynne-Jones, Laine & JamesEssex Place22 Rodney RoadCheltenham Gloucestershire GL50 1JJ Gloucestershire GL50 1JJ (GB)