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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 10435772 B1

PDFFull Text
Expired
Date of Patent:
Oct. 08, 2019

Filed:

Mar. 28, 2016

Steel sheet

Applicant:

Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;

Inventors:

Yoshinari Ishida, Tokyo, JP;

Riki Okamoto, Tokyo, JP;

Daisuke Maeda, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Alexandra M Moore

Int. Cl.
CPC ...
C22C 38/28 (2006.01); B21B 3/02 (2006.01); B21C 37/02 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/58 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/42 (2006.01); C22C 38/50 (2006.01); C22C 38/38 (2006.01);
U.S. Cl.
CPC ...
C22C 38/28 (2013.01); B21B 3/02 (2013.01); B21C 37/02 (2013.01); C21D 8/02 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 9/46 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/38 (2013.01); C22C 38/42 (2013.01); C22C 38/50 (2013.01); C22C 38/58 (2013.01);
Abstract

A steel sheet includes: a base iron; a scale of 10.0 μm or less in thickness on a surface of the base iron; a subscale between the base iron and the scale. In the subscale, an average value of Cr concentrations is 1.50 mass % to 5.00 mass %, and one part or more exist(s) where a ratio of Cr concentrations between two adjacent measurement regions separate by 1 μm is 0.90 or less or 1.11 or more in a range of 50 μm in length in a rolling direction. A percentage of an amount of Ti contained in carbide or carbonitride of 100 nm or more and 1 μm or less in grain diameter to a parameter Tirepresented by a formula 'Ti=[Ti]−48/14[N]' is 30% or less in which [Ti] denotes a Ti content (mass %) and [N] denotes a N content (mass %).

Find Patent Forward Citations

Ishida, Yoshinari. (2019). Steel sheet (U.S. Patent No. 10435772). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10435772

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

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