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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.:

US 11339459 B1

PDFFull Text
Date of Patent:
May. 24, 2022

Filed:

May. 15, 2017

Gold-colored steel sheet and manufacturing method thereof

Applicant:

Posco, Pohang-si, KR;

Inventors:

Jung-Hyun Kong, Pohang-si, KR;

Sang Seok Kim, Pohang-si, KR;

Mi Nam Park, Pohang-si, KR;

Assignee:

POSCO, Pohang-si, KR;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Jessee R Roe

Int. Cl.
CPC ...
C22C 38/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01);
U.S. Cl.
CPC ...
C22C 38/001 (2013.01); C21D 8/0257 (2013.01); C21D 9/46 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C21D 2201/00 (2013.01);
Abstract

The present invention discloses a gold-colored steel sheet capable of expressing color without peeling of a modified layer and the gold-colored steel sheet capable of forming a color-modified layer through a conventional annealing process without expensive facilities. A method of manufacturing the gold-colored steel sheet according to an embodiment of the present invention can form a TiN modified layer on a surface of a steel sheet comprising 0.3 to 1.5 wt % of titanium (Ti) by an annealing treatment in a nitrogen (N) atmosphere at 900 to 1,200° C. for 30 to 300 seconds.

Find Patent Forward Citations

Kong, Jung-Hyun. (2022). Gold-colored steel sheet and manufacturing method thereof (U.S. Patent No. 11339459). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11339459

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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