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:
May. 26, 2020
Filed:
Apr. 17, 2019
Dai-ichi High Frequency Co., Ltd., Tokyo, JP;
Kotaro Hirayama, Tokyo, JP;
Shota Tanoue, Tokyo, JP;
DAI-ICHI HIGH FREQUENCY CO., LTD., Tokyo, JP;
Abstract
A method for manufacturing a ferromagnetic-particle includes preparing a manufacturing apparatus including an induction heating coil; a radiofrequency power source electrically connected to the induction heating coil and configured to form an alternating field inside the induction heating coil; a pipe disposed to pass through the induction heating coil, in which at least a partial area of the pipe in an axial direction thereof is formed of a dielectric material and an area, which is nearer to one end of the pipe than the area formed of a dielectric material, is formed of a conductive material; and a pump configured to introduce, from the one end of the pipe, an alkaline reaction liquid in which metal ions of a ferromagnetic metal and hydroxide ions are dissolved; reacting the reaction liquid in the pipe, introduced by the pump, by forming an alternating field inside the induction heating coil; and generating the ferromagnetic-particle in the pipe based on the reaction of the reaction liquid in the pipe.