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:
Nov. 20, 2018
Filed:
Mar. 24, 2014
Nippon Steel & Sumikin Stainless Steel Corporation, Tokyo, JP;
Nobuhiko Hiraide, Hikari, JP;
Tooru Matsuhashi, Hikari, JP;
Noriyo Morihiro, Hikari, JP;
Naoto Ono, Nagoya, JP;
Abstract
One aspect of this ferritic stainless steel sheet contains, by mass %, C: 0.03% or less, N: 0.05% or less, Si: 1% or less, Mn: 1.2% or less, Cr: 14% or more and 28% or less, Nb: 8(C +N) or more and 0.8% or less, and Al: 0.1% or less, with a balance being Fe and inevitable impurities, in which a film satisfying Expression 1 is formed in a surface thereof. Expression 1 is d×Cr+5(Si+3Al)≤2.0. In Expression 1, drepresents a thickness (nm) of the film, Crrepresents a Cr cationic fraction in the film, Sirepresents a Si cationic fraction in the film, and Alrepresents an Al cationic fraction in the film.