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. 04, 2025
Filed:
Apr. 17, 2020
Nippon Steel Corporation, Tokyo, JP;
Hiroyasu Fujii, Tokyo, JP;
Jun Maki, Tokyo, JP;
Kazutoshi Takeda, Tokyo, JP;
Hiroyuki Mimura, Tokyo, JP;
Yusuke Kanto, Tokyo, JP;
Shuichi Yamazaki, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
A non-oriented electrical steel sheet according to one embodiment of this invention includes a base metal steel sheet and a composite coating film composed of a Zn-containing phosphate and an organic resin, the composite coating film being formed on a surface of the base metal steel sheet. A molar ratio of Zn to all metal components in the composite coating film is 10 mol % or more, and after the non-oriented electrical steel sheet is boiled for 20 minutes in boiled distilled water, an amount of soluble Zn in the distilled water is 1.0 mg/mor more. The method for determining the amount of soluble Zn is in accordance with JIS K 0102: 2016 'Testing Methods for Industrial Wastewater', 53.3 “ICP Emission Spectroscopy”.