公开(公告)号：US09697937B2

公开(公告)日：2017-07-04

申请号：US14378140

申请日：2013-02-07

Applicant: TODA KOGYO CORP.

Inventor： Yoji Okano ,  Tomohiro Dote ,  Takanori Doi

IPC: C04B35/30 ,  C01G53/00 ,  C01G49/00 ,  H01F1/34 ,  H01F1/01 ,  C04B35/26 ,  H01F41/02

CPC classification number: H01F1/01 ,  C01G53/006 ,  C01P2002/32 ,  C01P2006/12 ,  C01P2006/42 ,  C04B35/26 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/5409 ,  C04B2235/602 ,  C04B2235/77 ,  H01F1/344 ,  H01F41/0246

Abstract: An object of the present invention is to provide a ferrite material that is excellent in temperature characteristic and DC superimposition characteristic. The present invention relates to Ni—Zn—Cu-based ferrite particles comprising 70 to 95% by weight of an Ni—Zn—Cu ferrite having a specific composition, 1 to 20% by weight of nickel oxide, 0 to 20% by weight of zinc oxide and 1 to 10% by weight of copper oxide, and a ferrite sintered ceramics obtained by sintering the ferrite particles.

公开(公告)号：US20150028251A1

公开(公告)日：2015-01-29

申请号：US14378140

申请日：2013-02-07

Applicant: TODA KOGYO CORP.

Inventor： Yoji Okano ,  Tomohiro Dote ,  Takanori Doi

IPC: H01F1/01

CPC classification number: H01F1/01 ,  C01G53/006 ,  C01P2002/32 ,  C01P2006/12 ,  C01P2006/42 ,  C04B35/26 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/5409 ,  C04B2235/602 ,  C04B2235/77 ,  H01F1/344 ,  H01F41/0246

Abstract: An object of the present invention is to provide a ferrite material that is excellent in temperature characteristic and DC superimposition characteristic. The present invention relates to Ni—Zn—Cu-based ferrite particles comprising 70 to 95% by weight of an Ni—Zn—Cu ferrite having a specific composition, 1 to 20% by weight of nickel oxide, 0 to 20% by weight of zinc oxide and 1 to 10% by weight of copper oxide, and a ferrite sintered ceramics obtained by sintering the ferrite particles.

Abstract translation: 本发明的目的是提供一种具有优异的温度特性和直流叠加特性的铁氧体材料。 本发明涉及Ni-Zn-Cu系铁氧体颗粒，其包含70〜95重量％的具有特定组成的Ni-Zn-Cu铁氧体，1〜20重量％的氧化镍，0〜20重量％ 的氧化锌和1〜10重量％的氧化铜，以及通过烧结铁氧体颗粒而获得的铁氧体烧结陶瓷。

公开(公告)号：US09824802B2

公开(公告)日：2017-11-21

申请号：US14439283

申请日：2013-10-29

Applicant: TODA KOGYO CORP.

Inventor： Makoto Sadai ,  Tomohiro Dote ,  Yoji Okano

IPC: H01F1/01 ,  H01F1/34 ,  C04B35/26 ,  C09J7/02

CPC classification number: H01F1/01 ,  C04B35/265 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/6025 ,  C09J7/22 ,  H01F1/344

Abstract: The present invention relates to an Ni—Zn—Cu—Co ferrite sintered plate having a composition comprising 45 to 50 mol % of Fe2O3, 10 to 25 mol % of NiO, 15 to 36 mol % of ZnO, 2 to 14 mol % of CuO and 0.1 to 3.5 mol % of CoO, all of the molar amounts being calculated in terms of the respective oxides, and a ferrite sintered sheet that is provided on a surface thereof with a groove and further with an adhesive layer and/or a protective layer. The ferrite sintered sheet is capable of exhibiting an increased μ′ value of a magnetic permeability while maintaining a small μ″ value of the magnetic permeability.

公开(公告)号：US10128029B2

公开(公告)日：2018-11-13

申请号：US15032711

申请日：2014-10-30

Applicant: TODA KOGYO CORP.

Inventor： Yoji Okano ,  Tomohiro Dote ,  Makoto Sadai ,  Shingo Honda ,  Katsumi Nakai ,  Yasuhiko Fujii

IPC: H01F1/10 ,  H01F1/34 ,  C04B35/26 ,  B32B3/30 ,  B32B18/00 ,  C04B35/626 ,  C04B35/638 ,  H01Q1/24 ,  H01Q1/38

Abstract: An object or technical task of the present invention is to provide a ferrite sintered sheet having a dense ferrite microfine structure which has a large μ′ value, a small μ″ value, and a small temperature-dependent change of the μ′ value thereof. The present invention relates to a ferrite ceramics having a composition comprising 47.5 to 49.8 mol % of Fe2O3, 13.5 to 19.5 mol % of NiO, 21 to 27 mol % of ZnO, 7.5 to 12.5 mol % of CuO and 0.2 to 0.8 mol % of CoO, all of the molar amounts being calculated in terms of the respective oxides, the ferrite ceramics further comprising 0.2 to 1.4% by weight of SnO2 and 0.005 to 0.03% by weight of S and having a density of 5.05 to 5.30 g/cm3; and a ferrite sintered sheet comprising the ferrite sintered plate on a surface of which a groove or grooves are formed, and an adhesive layer and/or a protective layer formed on the ferrite sintered plate.