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:
Jan. 17, 2023
Filed:
Dec. 21, 2020
Applicants:
Posco, Pohang-si, KR;
Research Institute of Industrial Science & Technology, Pohang-si, KR;
Inventors:
Kyung Hwang Lee, Incheon, KR;
Jae In Jeong, Pohang-si, KR;
Hye Jeong Kim, Pohang-si, KR;
Ji Hoon Yang, Pohang-si, KR;
Assignees:
POSCO HOLDINGS INC., Seoul, KR;
RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, Pohang-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 21/02 (2006.01); C23C 14/58 (2006.01); C23C 14/16 (2006.01); C23C 14/24 (2006.01);
U.S. Cl.
CPC ...
C23C 14/5806 (2013.01); C22C 21/02 (2013.01); C23C 14/16 (2013.01); C23C 14/24 (2013.01);
Abstract
A black plated steel sheet includes a steel sheet and an Al—Mg—Si-based plating layer disposed on one surface or both surfaces of the steel sheet; in which the plating layer includes a black layer on the outermost surface thereof, and the black layer has a weight ratio of O to (Al+Mg+Si+O) of 0.01 to 0.6.