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:
May. 20, 2025
Filed:
Dec. 09, 2021
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Shuji Nishida, Tokyo, JP;
Ayako Ta, Tokyo, JP;
Assignee:
JFE Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 8/02 (2006.01); B21B 1/22 (2006.01); C21D 9/46 (2006.01); C22C 38/60 (2006.01);
U.S. Cl.
CPC ...
C21D 8/0236 (2013.01); B21B 1/22 (2013.01); C21D 8/0242 (2013.01); C21D 8/0278 (2013.01); C21D 9/46 (2013.01); C22C 38/60 (2013.01);
Abstract
A stainless steel sheet has a surface quality in which a core height Sk is 1.50 μm or less, a reduced peak height Spk is 0.20 μm or less, and an areal material ratio Smr2 that separates a reduced dale from a core is 80% or less, where the core height Sk, the reduced peak height Spk, and the areal material ratio Smr2 are as specified in JIS B 0681-2:2018. The stainless steel sheet has a whiteness of 50 or greater and an image clarity of 1% or greater.