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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 12790656 B1

PDFFull Text
Date of Patent:
Nov. 10, 2026

Filed:

Mar. 28, 2022

High strength steel sheet and method for manufacturing same and member

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Hidekazu Minami, Tokyo, JP;

Masayasu Ueno, Tokyo, JP;

Yuki Toji, Tokyo, JP;

Yuji Tanaka, Tokyo, JP;

Junya Tobata, Tokyo, JP;

Kazuki Endoh, Tokyo, JP;

Assignee:

JFE STEEL CORPORATION, Tokyo, JP;

Attorney:

KENJA IP LAW PC

Primary Examiner:

Nicholas A Wang

Int. Cl.
CPC ...
C21D 9/46 (2006.01); C21D 8/02 (2006.01); C21D 8/0221 (2026.01); C21D 8/0247 (2026.01); C21D 8/0278 (2026.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); C21D 8/02 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 8/0273 (2013.01); C21D 8/0278 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C21D 2211/001 (2013.01); C21D 2211/005 (2013.01);
Abstract

Provided is a high strength steel sheet with high stretch flangeability and high YR in the rolling direction as well as in the direction orthogonal to the rolling direction with TS of 1180 MPa or more. The high strength steel sheet has a prescribed chemical composition and steel microstructure. In particular, an average grain size of the hard phase is 5.3 μm or less, the volume fraction-carbon concentration ratio of retained austenite (γ) is 0.10 or more and 0.45 or less, and the integration degree of {112}<111> orientation is 1.0 or more.

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Minami, Hidekazu. (2026). High strength steel sheet and method for manufacturing same and member (U.S. Patent No. 12790656). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12790656

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

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