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:
Oct. 04, 2011
Filed:
Mar. 17, 2008
Chio Ishihara, Matsudo, JP;
Kazuo Asaka, Matsudo, JP;
Kohei Muramatsu, Matsudo, JP;
Tsuyoshi Akao, Kariya, JP;
Hirotake Hamamatsu, Kariya, JP;
Chio Ishihara, Matsudo, JP;
Kazuo Asaka, Matsudo, JP;
Kohei Muramatsu, Matsudo, JP;
Tsuyoshi Akao, Kariya, JP;
Hirotake Hamamatsu, Kariya, JP;
Hitachi Powered Metals Co., Ltd., Matsudo, JP;
Denso Corporation, Kariýa, JP;
Abstract
A method for producing a soft magnetic powdered core comprises a mixing step for forming a raw powder by adding a thermoplastic resin powder to a soft magnetic powder and mixing them, a compacting step for forming a compact by compacting the raw powder into a predetermined shape, a melting and setting step for the resin in which the resin of the compact is melted by heating to at least the melting point of the thermoplastic resin and the melted resin is set by cooling to a room temperature, and a crystallizing step for the resin in which the set resin is heated to not less than the exothermic onset temperature and not more than the endothermic onset temperature, which are measured by DSC analysis of the thermoplastic resin, and is cooled to a room temperature.