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. 08, 2022
Filed:
Nov. 04, 2019
Applicant:
Denso Corporation, Kariya, JP;
Inventors:
Hiroaki Kura, Kariya, JP;
Eiji Watanabe, Kariya, JP;
Masane Kin, Kariya, JP;
Kenta Osanai, Kariya, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/055 (2006.01); B22F 1/00 (2006.01); H01F 1/057 (2006.01); H01F 1/059 (2006.01);
U.S. Cl.
CPC ...
H01F 1/0551 (2013.01); B22F 1/0018 (2013.01); H01F 1/0558 (2013.01); B22F 2301/15 (2013.01); H01F 1/059 (2013.01); H01F 1/0578 (2013.01);
Abstract
An L10-FeNi magnetic powder has an average particle size of 50 nm to 1 μm, and an average value of sphericity P of 0.9 or more. The sphericity P is defined as P=Ls/Lr, where Lr is a perimeter of an L10-FeNi magnetic powder particle on an image of a microscope, and Ls is a perimeter of a perfect circle that has a same area as the L10-FeNi magnetic powder particle on the image for which Lr is calculated.