公开(公告)号：US09984799B2

公开(公告)日：2018-05-29

申请号：US14507216

申请日：2014-10-06

Applicant: TDK CORPORATION

Inventor： Ryuichi Wada ,  Kouichi Kakuda ,  Hiroki Choto ,  Yukari Akita ,  Yukio Takahashi ,  Masahiro Endo ,  Takashi Suzuki ,  Takahiro Sato ,  Akinori Ohi

IPC: H01F1/34 ,  H01F1/01 ,  H01F27/255 ,  C04B35/26 ,  C04B35/626 ,  H01F38/14 ,  H01F3/08 ,  H01F17/00 ,  H01F17/04

CPC classification number: H01F1/01 ,  C04B35/26 ,  C04B35/62645 ,  C04B2235/3275 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/77 ,  H01F1/344 ,  H01F3/08 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/255 ,  H01F38/14

Abstract: A ferrite composition comprises a main component and a sub component. The main component is comprised of 25.0 to 49.8 mol % iron oxide in terms of Fe2O3, 5.0 to 14.0 mol % copper oxide in terms of CuO, 0 to 40.0 mol % zinc oxide in terms of ZnO, and a remaining part of nickel oxide. The sub component includes 0.2 to 5.0 wt % silicon oxide in terms of SiO2, 0.10 to 3.00 wt % bismuth oxide in terms of Bi2O3, and 0.10 to 3.00 wt % cobalt oxide in terms of Co3O4, with respect to the main component.

公开(公告)号：US10074476B2

公开(公告)日：2018-09-11

申请号：US15090196

申请日：2016-04-04

Applicant: TDK CORPORATION

Inventor： Hiroki Choto ,  Takeshi Shibayama ,  Ryuichi Wada ,  Kouichi Kakuda ,  Yukari Akita ,  Asuka Murai ,  Yukio Takahashi ,  Takashi Suzuki ,  Akinori Ohi

IPC: C04B35/30 ,  H01F41/02 ,  C04B35/26 ,  H01F1/34 ,  H01F27/28

CPC classification number: H01F41/0246 ,  C04B35/26 ,  C04B35/2666 ,  C04B35/6261 ,  C04B35/62645 ,  C04B35/62695 ,  C04B2235/3244 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/77 ,  C04B2235/94 ,  H01F1/344 ,  H01F27/2804 ,  H01F2027/2809

Abstract: A ferrite composition composed of a main component including 26 to 46 mol % of an iron oxide in terms of Fe2O3, 4 to 14 mol % of a copper oxide in terms of CuO, 0 to 26 mol % of a zinc oxide in terms of ZnO, and a residue of 40.0 mol % or more of a nickel oxide in terms of NiO. The ferrite composition, with respect to 100 parts by weight of the main component, is also composed of a subcomponent including 0.8 to 10.0 parts by weight of a silicon compound in terms of SiO2, 1.0 to 15.0 parts by weight of a cobalt compound in terms of Co3O4, and 0.7 to 30.0 parts by weight of a bismuth compound in terms of Bi2O3. A value of the cobalt compound content in terms of Co3O4 divided by the silicon compound content in terms of SiO2 is 0.4 to 5.5.

公开(公告)号：US09305690B2

公开(公告)日：2016-04-05

申请号：US14266214

申请日：2014-04-30

Applicant: TDK CORPORATION

Inventor： Hiroki Choto ,  Takashi Suzuki ,  Shinichi Kondo ,  Yuya Oshima ,  Masahiro Endo ,  Masaki Takahashi

IPC: H01F5/00 ,  H01F27/28 ,  H01F1/40 ,  H01F1/37 ,  H01F17/00

CPC classification number: H01F1/401 ,  H01F1/37 ,  H01F17/0013

Abstract: A composite ferrite composition comprises a magnetic material and a non-magnetic material. A mixing ratio of said magnetic material and said non-magnetic material is 20 wt %:80 wt % to 80 wt %:20 wt %. Ni—Cu—Zn based ferrite is used as the magnetic material. Oxides of Zn, Cu, and Si are at least included in a main component of said non-magnetic material. Borosilicate glass is included in a subcomponent of said non-magnetic material.

Abstract translation: 复合铁氧体组合物包括磁性材料和非磁性材料。 所述磁性材料和所述非磁性材料的混合比为20重量％：80重量％至80重量％：20重量％。 使用Ni-Cu-Zn系铁氧体作为磁性材料。 Zn，Cu和Si的氧化物至少包括在所述非磁性材料的主要成分中。 硼硅酸盐玻璃被包括在所述非磁性材料的副成分中。

公开(公告)号：US09824804B2

公开(公告)日：2017-11-21

申请号：US15089992

申请日：2016-04-04

Applicant: TDK CORPORATION

Inventor： Hiroki Choto ,  Takeshi Shibayama ,  Takashi Suzuki ,  Shinichi Kondo ,  Yuya Oshima ,  Masaki Takahashi

IPC: H01F17/04 ,  H01F1/34 ,  H01F17/00 ,  H01F27/29

CPC classification number: H01F1/344 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/292 ,  H01F2017/048

Abstract: Provided is a composite ferrite composition including a magnetic substance material and a nonmagnetic substance material. The magnetic substance material is Ni—Cu—Zn based ferrite. The nonmagnetic substance material comprises a low dielectric constant nonmagnetic substance material, which is shown by a general formula: a(bZnO.cCuO).SiO2 and satisfies a=1.5 to 2.4, b=0.85 to 0.98, c=0.02 to 0.15, and b+c=1.00 in said general formula, and a bismuth oxide. A mixing ratio of the magnetic substance material and the low dielectric constant nonmagnetic substance material is 80 wt %:20 wt % to 10 wt %:90 wt %.