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:
Apr. 08, 2025
Filed:
Feb. 10, 2020
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Naoki Yamamoto, Tokyo, JP;
Takuya Takashita, Tokyo, JP;
Makoto Nakaseko, Tokyo, JP;
Akio Kobayashi, Tokyo, JP;
Shigeru Unami, Tokyo, JP;
Assignee:
JFE STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 3/08 (2006.01); B22F 1/00 (2022.01); B22F 1/052 (2022.01); B22F 1/065 (2022.01); B22F 1/16 (2022.01); B22F 3/00 (2021.01); B22F 3/02 (2006.01); B22F 3/24 (2006.01); H01F 1/26 (2006.01); H01F 27/255 (2006.01);
U.S. Cl.
CPC ...
H01F 3/08 (2013.01); B22F 1/00 (2013.01); B22F 1/052 (2022.01); B22F 1/065 (2022.01); B22F 1/16 (2022.01); B22F 3/00 (2013.01); B22F 3/02 (2013.01); B22F 3/24 (2013.01); H01F 1/26 (2013.01); H01F 27/255 (2013.01); B22F 2003/242 (2013.01);
Abstract
Provided is an iron-based powder for dust cores that has high apparent density and enables producing dust cores having high green density. An iron-based powder for dust cores comprises a maximum particle size of 1 mm or less, wherein a median circularity of particles constituting the iron-based powder for dust cores is 0.40 or more, and a uniformity number in Rosin-Rammler equation is 0.30 or more and 90.0 or less.