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:
Feb. 13, 2024
Filed:
Jan. 16, 2020
Nippon Steel Corporation, Tokyo, JP;
Yoshiyuki Ushigami, Tokyo, JP;
Shinji Yamamoto, Tokyo, JP;
Fumiaki Takahashi, Tokyo, JP;
Hideyuki Hamamura, Tokyo, JP;
Shinsuke Takatani, Tokyo, JP;
Masaru Takahashi, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
The grain-oriented electrical steel sheet according to the present invention is a grain-oriented electrical steel sheet having a base steel sheet (), an intermediate layer () disposed to be in contact with the base steel sheet (), and an insulation coating () disposed to be in contact with the intermediate layer (), and the grain-oriented electrical steel sheet includes a surface of the base steel sheet () having a groove (G) which extends in a direction intersecting a rolling direction of the base steel sheet (), in which in a cross-sectional view of a plane parallel to the rolling direction and a sheet thickness direction of the base steel sheet (), when a region between end portions of the groove (G) is defined as a groove part (R), an average thickness of the intermediate layer () of the groove part (R) is 0.5 times or more and 3.0 times or less an average thickness of the intermediate layer () other than the groove part (R), and an area ratio of voids in the insulation coating () of the groove part (R) is 15% or less.