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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 11823823 B1

PDFFull Text
Date of Patent:
Nov. 21, 2023

Filed:

Nov. 10, 2022

Ferrite particles for bonded magnets, resin composition for bonded magnets, and molded product using the same

Applicant:

Toda Kogyo Corp., Hiroshima, JP;

Inventors:

Yasushi Nishio, Otake, JP;

Hiromitsu Sakurai, Otake, JP;

Norihiro Fukushina, Otake, JP;

Yasuhiko Fujii, Otake, JP;

Assignee:

TODA KOGYO CORPORATION, Hiroshima, JP;

Attorney:

Nixon & Vanderhye P.C.

Primary Examiner:

Matthew E Hoban

Assistant Examiner:

Lynne Edmondson

Int. Cl.
CPC ...
H01F 1/11 (2006.01); C04B 35/626 (2006.01); H01F 1/03 (2006.01); C01G 49/00 (2006.01); H01F 1/113 (2006.01); C04B 35/26 (2006.01); C04B 35/634 (2006.01); C08K 3/22 (2006.01);
U.S. Cl.
CPC ...
H01F 1/0306 (2013.01); C01G 49/009 (2013.01); C01G 49/0036 (2013.01); C01G 49/0063 (2013.01); C04B 35/26 (2013.01); C04B 35/6261 (2013.01); C04B 35/62645 (2013.01); C04B 35/634 (2013.01); C08K 3/22 (2013.01); H01F 1/113 (2013.01); C01P 2004/20 (2013.01); C01P 2004/22 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2006/10 (2013.01); C01P 2006/11 (2013.01); C01P 2006/12 (2013.01); C01P 2006/42 (2013.01); C04B 2235/3201 (2013.01); C04B 2235/3213 (2013.01); C04B 2235/3409 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/6022 (2013.01); C04B 2235/77 (2013.01); C08K 2003/2206 (2013.01); C08K 2003/2265 (2013.01);
Abstract

According to the present invention, there are provided ferrite particles for bonded magnets and a resin composition for bonded magnets which are capable of producing a bonded magnet molded product having a good tensile elongation and exhibiting excellent magnetic properties, as well as a bonded magnet molded product such as a rotor which is obtained by using the resin composition. The present invention relates to ferrite particles for bonded magnets having a bulk density of not less than 0.5 g/cmand less than 0.6 g/cmand a degree of compaction of not less than 65%, a resin composition for bonded magnets using the ferrite particles, and a molded product obtained by using the ferrite particles and the resin composition.

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