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:
Jul. 15, 2025
Filed:
Dec. 17, 2019
Sanyo Special Steel Co., Ltd., Himeji, JP;
Sanyo Special Steel Co., Ltd., Himeji, JP;
Abstract
Provided is a powder which has a high saturation magnetic flux density and excellent flame retardancy. This powder is a flame retardant powder for a magnetic member, and includes a plurality of flaky particles. These particles are composed of an Fe—Si-based alloy containing 7% by mass or more and 12% by mass or less of Si. The content of Si in terms of percentage by mass, P(Si), in this alloy and the flame retardancy parameter Psatisfy the following mathematical formulae (I) and (II): (−0.97×P(Si)+13.0)<P≤10 (I), P=D50×TD/ρ (II), wherein, D50 represents the median diameter of the powder, TD represents the tap density of the powder, and ρ represents the true density of the powder.