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. 27, 2026
Filed:
Aug. 12, 2021
Applicant:
Kobe Steel, Ltd., Kobe, JP;
Inventors:
Assignee:
Kobe Steel, Ltd., Kobe, JP;
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/46 (2006.01); C21D 8/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C23C 2/06 (2006.01); C23C 2/40 (2006.01); C25D 3/22 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); C21D 8/0221 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C23C 2/06 (2013.01); C23C 2/40 (2013.01); C25D 3/22 (2013.01); C21D 2211/001 (2013.01);
Abstract
Disclosed is a high-strength steel sheet having predetermined chemical components, and microstructures of the steel sheet satisfies that: a fraction of MA in all steel microstructures being more than 0% and 15.0% or less by area ratio; a fraction of a soft α-phase microstructure in the all steel microstructures being 0% or more and 50% or less by area ratio; and a standard deviation of an equivalent circle diameter of retained austenite being greater than 0.155 μm.