公开(公告)号：US11823823B2

公开(公告)日：2023-11-21

申请号：US17984519

申请日：2022-11-10

Applicant: TODA KOGYO CORP.

Inventor： Yasushi Nishio ,  Hiromitsu Sakurai ,  Norihiro Fukushina ,  Yasuhiko Fujii

IPC: H01F1/11 ,  C04B35/626 ,  H01F1/03 ,  C01G49/00 ,  H01F1/113 ,  C04B35/26 ,  C04B35/634 ,  C08K3/22

CPC classification number: H01F1/0306 ,  C01G49/009 ,  C01G49/0036 ,  C01G49/0063 ,  C04B35/26 ,  C04B35/6261 ,  C04B35/62645 ,  C04B35/634 ,  C08K3/22 ,  H01F1/113 ,  C01P2004/20 ,  C01P2004/22 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/42 ,  C04B2235/3201 ,  C04B2235/3213 ,  C04B2235/3409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/6022 ,  C04B2235/77 ,  C08K2003/2206 ,  C08K2003/2265

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/cm3 and less than 0.6 g/cm3 and 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.

公开(公告)号：US11228106B2

公开(公告)日：2022-01-18

申请号：US16481900

申请日：2018-01-29

Applicant: TODA KOGYO CORP.

Inventor： Satoshi Nomura ,  Jun Koujima ,  Yasushi Nishio ,  Manato Nakatsukasa ,  Yasuhiko Fujii

IPC: H01Q7/06 ,  G06K19/077 ,  H01Q1/22

Abstract: The present invention relates to an electronic component, and also relates to an antenna for information communication using a magnetic field component, which is capable of satisfying both of downsizing and improvement in communication sensitivity. The electronic component of the present invention comprises a ferrite core and a coil, in which a ferrite constituting the ferrite core has a spinel structure and comprises Fe, Ni, Zn, Cu and Co as constitutional metal elements, and when contents of the respective constitutional metal elements in the ferrite are calculated in terms of Fe2O3, NiO, ZnO, CuO and CoO, contents of Fe2O3, NiO, ZnO, CuO and CoO in the ferrite are 46 to 50 mol %, 20 to 27 mol %, 15 to 22 mol %, 9 to 11 mol % and 0.01 to 1.0 mol %, respectively, based on a total content of Fe2O3, NiO, ZnO, CuO and CoO.

公开(公告)号：US09691528B2

公开(公告)日：2017-06-27

申请号：US14389102

申请日：2013-03-14

Applicant: TODA KOGYO CORP.

Inventor： Yasushi Nishio ,  Hiromitsu Sakurai ,  Norihiro Fukushina ,  Yasuhiko Fujii

IPC: H01F1/11 ,  H01F1/113 ,  H01F1/01 ,  C01G49/02 ,  C04B35/26 ,  C04B35/626 ,  C01G49/00

CPC classification number: H01F1/01 ,  C01G49/0018 ,  C01G49/0036 ,  C01G49/02 ,  C01P2004/20 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/42 ,  C04B35/26 ,  C04B35/6261 ,  C04B35/62645 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3409 ,  C04B2235/5409 ,  C04B2235/5436 ,  H01F1/113 ,  Y10T428/2982

Abstract: The present invention relates to ferrite particles for bonded magnets having a bulk density of not more than 0.75 g/cm3 and a degree of compaction of not less than 65%, a resin composition for bonded magnets using the ferrite particles and the composition, and a rotor. The ferrite particles for bonded magnets and the resin composition for bonded magnets according to the present invention are capable of providing a bonded magnet molded product having a good tensile elongation and an excellent magnetic properties.

公开(公告)号：US20150041702A1

公开(公告)日：2015-02-12

申请号：US14389102

申请日：2013-03-14

Applicant: TODA KOGYO CORP.

Inventor： Yasushi Nishio ,  Hiromitsu Sakurai ,  Norihiro Fukushina ,  Yasuhiko Fujii

IPC: H01F1/01 ,  C01G49/02

CPC classification number: H01F1/01 ,  C01G49/0018 ,  C01G49/0036 ,  C01G49/02 ,  C01P2004/20 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/42 ,  C04B35/26 ,  C04B35/6261 ,  C04B35/62645 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3409 ,  C04B2235/5409 ,  C04B2235/5436 ,  H01F1/113 ,  Y10T428/2982

Abstract: The present invention relates to ferrite particles for bonded magnets having a bulk density of not more than 0.75 g/cm3 and a degree of compaction of not less than 65%, a resin composition for bonded magnets using the ferrite particles and the composition, and a rotor. The ferrite particles for bonded magnets and the resin composition for bonded magnets according to the present invention are capable of providing a bonded magnet molded product having a good tensile elongation and an excellent magnetic properties.

Abstract translation: 本发明涉及堆积密度不大于0.75g / cm 3，压实度不小于65％的粘结磁体用铁氧体颗粒，使用铁氧体颗粒的粘结磁体用树脂组合物和组合物，以及 转子。 根据本发明的粘结磁铁用铁氧体颗粒和粘结磁体用树脂组合物能够提供具有良好的拉伸伸长率和优异的磁性能的粘结磁体模制产品。

公开(公告)号：US12246475B2

公开(公告)日：2025-03-11

申请号：US18379809

申请日：2023-10-13

Applicant: TODA KOGYO CORP.

Inventor： Yasushi Nishio ,  Yasuhiko Fujii ,  Hiromitsu Sakurai

IPC: H01F1/113 ,  B29C45/00 ,  C01G49/00 ,  H01F1/08 ,  H01F1/11 ,  B29K505/12 ,  B29L31/00

Abstract: The present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which can provide a bonded magnet molded product capable of realizing a high magnetic force and a complicated multipolar waveform owing to such a feature that the ferrite particles are readily and highly oriented against an external magnetic field in a flowing resin upon injection molding, as well as a bonded magnet molded product obtained by injection-molding the above composition. According to the present invention, there are provided ferrite particles for bonded magnets which have a crystallite size of not less than 500 nm as measured in an oriented state by XRD, and an average particle diameter of not less than 1.30 μm as measured by Fisher method; a resin composition for bonded magnets; and a molded product obtained by injection-molding the composition.

公开(公告)号：US11820055B2

公开(公告)日：2023-11-21

申请号：US14781777

申请日：2014-04-01

Applicant: TODA KOGYO CORP.

Inventor： Yasushi Nishio ,  Yasuhiko Fujii ,  Hiromitsu Sakurai

IPC: H01F1/113 ,  H01F1/11 ,  H01F1/08 ,  H01F1/37 ,  H01F1/153 ,  B29C45/00 ,  C01G49/00 ,  B29K505/12 ,  B29L31/00

CPC classification number: B29C45/0001 ,  C01G49/0036 ,  H01F1/11 ,  B29K2505/12 ,  B29L2031/00 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/42

Abstract: The present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which can provide a bonded magnet molded product capable of realizing a high magnetic force and a complicated multipolar waveform owing to such a feature that the ferrite particles are readily and highly oriented against an external magnetic field in a flowing resin upon injection molding, as well as a bonded magnet molded product obtained by injection-molding the above composition. According to the present invention, there are provided ferrite particles for bonded magnets which have a crystallite size of not less than 500 nm as measured in an oriented state by XRD, and an average particle diameter of not less than 1.30 μm as measured by Fisher method; a resin composition for bonded magnets; and a molded product obtained by injection-molding the composition.