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:
Jun. 29, 2010
Filed:
Oct. 25, 2005
Katsumi Okayama, Kanagawa, JP;
Kaoru Kobayashi, Chiba, JP;
Koichiro Inomata, Aramaki, Aoba-Ku, Sendai, Miyagi, JP;
Satoshi Sugimoto, Aramaki, Aoba-Ku, Sendai, Miyagi, JP;
Yoshihiro Kato, Aramaki, Aoba-Ku, Sendai, Miyagi, JP;
Katsumi Okayama, Kanagawa, JP;
Kaoru Kobayashi, Chiba, JP;
Koichiro Inomata, Aramaki, Aoba-Ku, Sendai, Miyagi, JP;
Satoshi Sugimoto, Aramaki, Aoba-Ku, Sendai, Miyagi, JP;
Yoshihiro Kato, Aramaki, Aoba-Ku, Sendai, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Other;
Abstract
A method for producing a magnetic particle forming a magnetic material for absorbing electromagnetic waves comprises the steps of mixing an organometallic complex or a metal salt with a chain polymer and dissolving the mixture in a solvent (step S); raising the temperature of the mixture to reaction temperature (step S), carrying out a reaction at the reaction temperature (step S); and forming the magnetic particle having a structure that the periphery of each fine particle formed from the organometallic complex or the metal salt is surrounded by the chain polymer and recovering the formed magnetic particle after the reaction (step S). The magnetic particle has a nanogranular structure to become a magnetic material for absorbing electromagnetic waves. Such a magnetic particle is produced by a wet reaction. Thus, a larger amount of magnetic particle can be produced by one reaction.