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:
Nov. 25, 2025
Filed:
Dec. 03, 2020
Posco, Pohang-si, KR;
Young-Jin Kwak, Gwangyang-si, KR;
Woo-Sung Jung, Gwangyang-si, KR;
POSCO CO., LTD, Pohang-si, KR;
Abstract
A zinc-based coated steel material includes: a base steel; and a multilayer zinc-based plating layer composed of two or more discriminated plating layers, wherein the multilayer zinc-based plating layer includes Mg at a ratio of 0.12 to 0.64 percent by weight to the entire multi-plating layer, and the multilayer zinc-based plating layer includes a first plating layer, a second plating layer, a third plating layer sequentially from an interface with the base steel, and the second plating layer is a Zn—Mg alloy layer including Mg of 0.4 to 0.9 percent by weight, and an adhesion amount of the second plating layer is 9 to 15 g/m.