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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 10661247 B1

PDFFull Text
Date of Patent:
May. 26, 2020

Filed:

Feb. 11, 2019

Ferromagnetic-particle manufacturing apparatus

Applicant:

Dai-ichi High Frequency Co., Ltd., Tokyo, JP;

Inventors:

Kotaro Hirayama, Tokyo, JP;

Shota Tanoue, Tokyo, JP;

Assignee:

DAI-ICHI HIGH FREQUENY CO., LTD., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Kishor Mayekar

Int. Cl.
CPC ...
B01J 19/12 (2006.01); C01G 49/00 (2006.01); C01G 53/00 (2006.01); H05B 6/80 (2006.01); H01F 1/20 (2006.01); B22F 1/00 (2006.01); B01J 19/02 (2006.01); C01G 49/08 (2006.01); C01G 53/04 (2006.01); H05B 6/10 (2006.01); B01J 19/06 (2006.01); B22F 9/24 (2006.01);
U.S. Cl.
CPC ...
B01J 19/126 (2013.01); B01J 19/02 (2013.01); B01J 19/06 (2013.01); B22F 1/0011 (2013.01); B22F 9/24 (2013.01); C01G 49/0018 (2013.01); C01G 49/08 (2013.01); C01G 53/04 (2013.01); C01G 53/40 (2013.01); H01F 1/20 (2013.01); H05B 6/108 (2013.01); H05B 6/806 (2013.01); B01J 2219/0204 (2013.01); B01J 2219/0871 (2013.01); B01J 2219/0877 (2013.01); B01J 2219/1215 (2013.01); B01J 2219/1245 (2013.01); B22F 2009/245 (2013.01); B22F 2301/15 (2013.01); B22F 2301/35 (2013.01); B22F 2999/00 (2013.01); C01P 2006/42 (2013.01); C22C 2202/02 (2013.01); H05B 2214/04 (2013.01);
Abstract

A method for manufacturing a ferromagnetic-particle includes preparing a manufacturing apparatus including a single mode cavity that resonates with a microwave of a predetermined wavelength; a microwave oscillator electrically connected to the single mode cavity and configured to introduce the microwave of a predetermined wavelength into the single mode cavity; a pipe disposed to pass linearly through an inside of the single mode cavity, the pipe being formed of a dielectric material; and a pump configured to introduce, from one end of the pipe, an alkaline reaction liquid in which metal ions of a ferromagnetic metal and hydroxide ions are dissolved; and reacting the reaction liquid in the pipe, introduced by the pump, by introducing the microwave into the single mode cavity so as to generate the ferromagnetic-particle in the pipe.

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