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:
Nov. 28, 2023
Filed:
Mar. 27, 2019
Applicant:
Sony Corporation, Tokyo, JP;
Inventors:
Natsuki Toyosawa, Miyagi, JP;
Norikatsu Fujisawa, Miyagi, JP;
Yuta Akimoto, Miyagi, JP;
Satoru Abe, Miyagi, JP;
Masaru Terakawa, Miyagi, JP;
Katsunori Maeshima, Miyagi, JP;
Atsushi Muramatu, Miyagi, JP;
Masafumi Nakaya, Miyagi, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G 49/04 (2006.01); C01G 49/08 (2006.01); C09C 1/24 (2006.01); G11B 5/842 (2006.01); G11B 5/706 (2006.01); H01F 1/11 (2006.01); G11B 5/712 (2006.01);
U.S. Cl.
CPC ...
G11B 5/842 (2013.01); C01G 49/04 (2013.01); C01G 49/08 (2013.01); C09C 1/24 (2013.01); G11B 5/70605 (2013.01); G11B 5/70642 (2013.01); G11B 5/712 (2013.01); H01F 1/11 (2013.01); C01P 2002/60 (2013.01); C01P 2004/84 (2013.01); C01P 2006/42 (2013.01);
Abstract
[Solving Means] A method of producing a magnetic powder includes: coating a surface of each of silica-coated precursor particles with at least one type of coating agent of a metal chloride or a sulfate; and firing the precursor particles coated with the coating agent.