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.

Date of Patent:
Oct. 23, 2018

Filed:

Dec. 17, 2014
Applicants:

Posco, Pohang-si, Gyeongsangbuk-do, KR;

Research Institute of Industrial Science & Technology, Pohang-si, Gyeongsangbuk-do, KR;

Inventors:

Jae In Jeong, Pohang-si, KR;

Ji Hoon Yang, Pohang-si, KR;

Tae Yeob Kim, Pohang-si, KR;

Yong Hwa Jung, Pohang-si, KR;

Assignees:

POSCO, Pohang-Si, Gyeongsangbuk-Do, KR;

RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, Pohang-Si, Gyeongsangbuk-Do, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/46 (2006.01); C21D 6/00 (2006.01); C23C 14/28 (2006.01); C23C 14/58 (2006.01); C23C 14/16 (2006.01); B32B 15/01 (2006.01); C22C 38/00 (2006.01); C22C 23/02 (2006.01); C22C 38/04 (2006.01); C22F 1/047 (2006.01); B32B 15/18 (2006.01); B32B 15/04 (2006.01); C23C 28/02 (2006.01); C23C 14/02 (2006.01); C23C 30/00 (2006.01); C22F 1/06 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); B32B 15/012 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); C21D 6/005 (2013.01); C22C 23/02 (2013.01); C22C 38/002 (2013.01); C22C 38/04 (2013.01); C22F 1/047 (2013.01); C22F 1/06 (2013.01); C23C 14/022 (2013.01); C23C 14/025 (2013.01); C23C 14/027 (2013.01); C23C 14/16 (2013.01); C23C 14/165 (2013.01); C23C 14/28 (2013.01); C23C 14/5806 (2013.01); C23C 28/021 (2013.01); C23C 28/023 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); Y10T 428/12729 (2015.01); Y10T 428/12757 (2015.01); Y10T 428/12764 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01); Y10T 428/2495 (2015.01); Y10T 428/24942 (2015.01); Y10T 428/24967 (2015.01); Y10T 428/263 (2015.01); Y10T 428/264 (2015.01); Y10T 428/265 (2015.01);
Abstract

An exemplary embodiment of the present invention provides a coated steel sheet on which a magnesium-aluminum alloy coating layer is formed, including: a steel sheet; and a coating layer configured to include a first magnesium-aluminum alloy layer formed on a top surface of the steel sheet and a second magnesium-aluminum alloy layer formed on a top surface of the first magnesium-aluminum alloy layer, wherein a magnesium content of the first magnesium-aluminum alloy layer is higher than that of the second magnesium-aluminum alloy layer.


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