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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.:

US 11440810 B1

PDFFull Text
Date of Patent:
Sep. 13, 2022

Filed:

Aug. 22, 2019

Powder of β-iron oxyhydroxide-based compound, β-iron oxyhydroxide-based compound sol, manufacturing method of powder of ϵ-iron oxide-based compound, and manufacturing method of magnetic recording medium

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventor:

Takashi Fujimoto, Kanagawa, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Matthew E Hoban

Assistant Examiner:

Lynne Edmondson

Int. Cl.
CPC ...
H01F 1/11 (2006.01); H01F 1/00 (2006.01); C01G 49/06 (2006.01); G11B 5/852 (2006.01);
U.S. Cl.
CPC ...
C01G 49/06 (2013.01); G11B 5/852 (2013.01); C01P 2002/72 (2013.01); C01P 2004/04 (2013.01); C01P 2006/42 (2013.01);
Abstract

Provided is a powder of a β-iron oxyhydroxide-based compound that is a group of particles of a β-iron oxyhydroxide-based compound represented by Formula (1) below; in which a surface of the particles of the β-iron oxyhydroxide-based compound is modified with a surface modifier; in which, in a case where the powder is dispersed in water to be made into a sol, a zeta potential of the powder is equal to or higher than +5 mV at pH 10; andβ-AFeOOH  (1)in which, in Formula (1), A represents at least one metallic element other than Fe, and a represents a number that satisfies a relationship of 0≤a<1.

Find Patent Forward Citations

Fujimoto, Takashi. (2022). Powder of β-iron oxyhydroxide-based compound, β-iron oxyhydroxide-based compound sol, manufacturing method of powder of ϵ-iron oxide-based compound, and manufacturing method of magnetic recording medium (U.S. Patent No. 11440810). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11440810

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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