(19)

(11)

EP 2 170 543 A1

(12)

(43) Date of publication: 07.04.2010 Bulletin 2010/14 (21) Application number: 08778377.5 (22) Date of filing: 26.06.2008

(51) International Patent Classification (IPC):  B22D 11/10(2006.01) (86) International application number: PCT/KR2008/003672 (87) International publication number: WO 2009/002105 (31.12.2008 Gazette 2009/01)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 26.06.2007 KR 20070062651 (71) Applicant: Posco Pohang-si Gyeongsangbuk-do 790-300 (KR)	(72) Inventors: KWON, Oh Duck Pohang-si Gyeongsangbuk-do 790-390 (KR) KIM, Ki Hoon Pohang-si Gyeongsangbuk-do 790-861 (KR) KANG, Seung Gyou Pohang-si Gyeongsangbuk-do 790-390 (KR) LEE, Kyoung Mok Pohang-si Gyeongsangbuk-do 790-754 (KR) (74) Representative: Zech, Stefan Markus et al Meissner, Bolte & Partner GbR Postfach 86 06 24 81633 München 81633 München (DE)