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:
Oct. 11, 2022
Filed:
Jan. 24, 2019
Nippon Steel Corporation, Tokyo, JP;
Masato Yasuda, Tokyo, JP;
Masaru Takahashi, Tokyo, JP;
Yoshiyuki Ushigami, Tokyo, JP;
Shinya Yano, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
A grain oriented electrical steel sheet includes: a base steel sheet; a lower layer which is arranged in contact with the base steel sheet; and an insulation coating which is arranged in contact with the lower layer and which includes a phosphate and a colloidal silica as main components. The base steel sheet includes the predetermined chemical composition and includes a B compound whose major axis length is 1 to 20 μm and whose number density is 1×10 to 1×10pieces/mm. The lower layer is a glass film which includes a forsterite as main component or an intermediate layer includes a silicon oxide as main component.