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. 17, 2026
Filed:
May. 27, 2022
Nippon Steel Corporation, Tokyo, JP;
Shinsuke Takatani, Tokyo, JP;
Kazutoshi Takeda, Tokyo, JP;
Masaru Takahashi, Tokyo, JP;
Yoshiyuki Ushigami, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
Provided is a grain oriented electrical steel sheet including a base metal steel sheet, an intermediate layer and an insulation coating, wherein: the intermediate layer is an oxide film; an average thickness of the oxide film is 2-500 nm; the insulation coating is a phosphate coating; an average thickness of the insulation coating is 0.1-10 μm. When grazing incidence X-ray diffraction is performed on the phosphate coating using a Co-Kα excitation source, the X-ray diffraction pattern has a diffraction peak originating from cristobalite-type aluminum phosphate at a diffraction angle of 2θ=24.8°; a half value width FWHMof the diffraction peak under a diffraction condition with an X-ray incident angle ω=0.5° and a half value width FWHMof the diffraction peak under a diffraction condition with an X-ray incident angle ω=1.0° satisfy 0.20°≤FWHM≤2.00°, 0.20°≤FWHM≤2.00°, and 0°≤|FWHM−FWHM|≤1.00°.