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:
Apr. 05, 2016
Filed:
May. 11, 2012
Naoto Tsukamoto, Narita, JP;
Mitsuaki Sugiyama, Narita, JP;
Takahiro Mori, Narita, JP;
Yoshihiko Minachi, Makinohara, JP;
Masashi Gotoh, Nikaho, JP;
Minao Himeno, Yurihonjo, JP;
Naoto Tsukamoto, Narita, JP;
Mitsuaki Sugiyama, Narita, JP;
Takahiro Mori, Narita, JP;
Yoshihiko Minachi, Makinohara, JP;
Masashi Gotoh, Nikaho, JP;
Minao Himeno, Yurihonjo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
An injection molding composition includes a ferrite powder which is a collection of ferrite particles, a first binder and a second binder, wherein a softening point of the second binder is lower than that of the first binder, a weight and a specific surface area of the ferrite powders are represented by Wp and S, and a weight and a density of the first binder and the second binder is represented by Wb1, Wb2, and Db1, Db2, and a hypothetical thickness Tb1 of the first binder is 0.6 to 3.0, and a hypothetical thickness Tb2 of the second binder is 5.0 to 16.0. In the composition, it is preferable that coated ferrite particles covering the outer circumference of the ferrite particles with the first binder and the second binder exist.1 [nm]=(1×10)/(1×)  formula (1)2 [nm]=(2×10)/(2×)  formula (2).