(19)

(11)

EP 2 193 000 A2

(12)

(88) Date of publication A3: 11.06.2009 (43) Date of publication: 09.06.2010 Bulletin 2010/23 (21) Application number: 08833282.0 (22) Date of filing: 25.09.2008

(51) International Patent Classification (IPC):  B22D 11/16(2006.01) (86) International application number: PCT/KR2008/005697 (87) International publication number: WO 2009/041777 (02.04.2009 Gazette 2009/14)

(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: 28.09.2007 KR 20070097701 (71) Applicant: POSCO Nam-gu Pohang-si, Gyeongsangbuk-do 790-300 (KR)	(72) Inventors: KIM, Yoon-Ha Pohang-si Gyeongsangbuk-do 790-752 (KR) KIM, Sang-Hoon Pohang-si Gyeongsangbuk-do 790-752 (KR) CHEONG, Han-Nam Pohang-si Gyeongsangbuk-do 790-752 (KR) (74) Representative: Zech, Stefan Markus et al Meissner, Bolte & Partner GbR Postfach 86 06 24 81633 München 81633 München (DE)