The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 2004
Filed:
Feb. 04, 2002
Applicant:
Inventors:
Jeong-Bong Yoon, Pohaing-Si, KR;
Ki-Ho Kim, Pohang-si, KR;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C22C 3/810 ; C22C 3/816 ; C22C 3/806 ;
U.S. Cl.
CPC ...
C22C 3/810 ; C22C 3/816 ; C22C 3/806 ;
Abstract
A cold rolled steel sheet which has an excellent corrosion resistance to sulfuric acid, the steel includes in weight %: 0.15% or less of C, 1.0% or less of Si, 0.2˜1.5% of Mn, 0.03% or less of S, 0.03% or less of P, 0.01˜0.1% of Al, 0.2˜1.0% of Cu, 0.02˜0.2% of Co, and a balance of Fe and other unavoidable impurities.