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:
Jun. 30, 2020
Filed:
Sep. 11, 2015
Jfe Steel Corporation, Tokyo, JP;
Masayasu Nagoshi, Kawasaki, JP;
Tomohiro Matsushima, Chiba, JP;
Makoto Watanabe, Kurashiki, JP;
Shigehiro Takajo, Los Alamos, NM (US);
Toshito Takamiya, Kurashiki, JP;
Masanori Uesaka, Kurashiki, JP;
Takashi Terashima, Kurashiki, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
A grain oriented electrical steel sheet comprising a grain oriented electrical steel sheet having a surface and a forsterite film formed on the surface of the steel sheet, wherein a total area percentage of defective parts scattered on the forsterite film is less than 1.5% relative to a surface area of the forsterite film when viewed from above the surface, and methods for evaluating a grain oriented electrical steel sheet comprising a grain oriented electrical steel sheet having a surface and a forsterite film formed on the surface of the steel sheet.