(19)
(11) EP 1 704 261 A1

(12)

(43) Date of publication:
27.09.2006 Bulletin 2006/39

(21) Application number: 04808506.2

(22) Date of filing: 21.12.2004
(51) International Patent Classification (IPC): 
C22C 38/00(2006.01)
(86) International application number:
PCT/KR2004/003375
(87) International publication number:
WO 2005/061748 (07.07.2005 Gazette 2005/27)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

(30) Priority: 23.12.2003 KR 2003095393
23.12.2003 KR 2003095395
23.12.2003 KR 2003095394
29.12.2003 KR 2003098745
29.12.2003 KR 2003098744
29.12.2003 KR 2003099437
29.12.2003 KR 2003099435
29.12.2003 KR 2003098743
29.12.2003 KR 2003098746
29.12.2003 KR 2003099350
29.12.2003 KR 2003099351
30.12.2003 KR 2003099463
30.12.2003 KR 2003099462
30.12.2003 KR 2003099464
30.12.2003 KR 2003099461
07.09.2004 KR 2004071395
08.09.2004 KR 2004071705
21.10.2004 KR 2004084297

(71) Applicant: Posco
Pohang-si, Kyungsangbook-do 790-300 (KR)

(72) Inventors:
  • YOON, Jeong-Bong, c/o POSCO
    Pohang, Kyungsangbook-do 790-785 (KR)
  • SON, Won-Ho, c/o POSCO
    Pohang, Kyungsangbook-do 790-785 (KR)
  • KANG, Ki-Bong, c/o POSCO
    Pohang, Kyungsangbook-do 790-785 (KR)
  • CHO, Noi-Ha, c/o Kwang-Yang Works
    Dongkwangyang, Chunlabook-do 545-090 (KR)

(74) Representative: Larcher, Dominique 
16B Rue de Jouanet
35703 Rennes Cédex 7
35703 Rennes Cédex 7 (FR)

   


(54) BAKE-HARDENABLE COLD ROLLED STEEL SHEET HAVING EXCELLENT FORMABILITY, AND METHOD OF MANUFACTURING THE SAME