(19)
(11) EP 1 735 474 A1

(12)

(43) Date of publication:
27.12.2006 Bulletin 2006/52

(21) Application number: 05789750.6

(22) Date of filing: 22.03.2005
(51) International Patent Classification (IPC): 
C21D 9/46(2006.01)
(86) International application number:
PCT/KR2005/000828
(87) International publication number:
WO 2006/001583 (05.01.2006 Gazette 2006/01)
(84) Designated Contracting States:
DE FR

(30) Priority: 25.03.2004 KR 20040020204
09.12.2004 KR 20040103610

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

(72) Inventors:
  • HAN, Seong-Ho
    book-do, 790-300 (KR)
  • KIM, Tae-Kyu
    Chunlanam-do, 545-090 (KR)
  • HAN, Sang-Ho
    Chunlanam-do, 545-090 (KR)
  • KO, San-Kyung
    ng Chunlanam-do, 545-090 (KR)
  • CHIN, Kwang-Geun
    book-do, 790-300 (KR)
  • KANG, Hee-Jae
    book-do, 790-300 (KR)

(74) Representative: Blaumeier, Jörg 
LINDNER BLAUMEIER & KOLLEGEN Patent- und Rechtsanwälte Dr. Kurt-Schumacher-Strasse 23
90402 Nürnberg
90402 Nürnberg (DE)

   


(54) COLD ROLLED STEEL SHEET AND HOT DIPPED STEEL SHEET WITH SUPERIOR STRENGTH AND BAKE HARDENABILITY AND METHOD FOR MANUFACTURING THE STEEL SHEETS