公开(公告)号：US20240055167A1

公开(公告)日：2024-02-15

申请号：US18259580

申请日：2021-10-20

Applicant: TODA KOGYO CORP.

Inventor： Satoshi OHMAE ,  Tetsuya KIMURA ,  Makoto SADAI ,  Yoji OKANO

IPC: H01F1/34 ,  H01Q7/00

CPC classification number: H01F1/34 ,  H01Q7/00

Abstract: A ferrite sheet strip includes a strip shaped substrate and a plurality of ferrite sheet pieces provided on a surface of the substrate. The plurality of ferrite sheet pieces are aligned and spaced apart by a gap from one another along a longitudinal direction of the substrate. The gap extends at least partially so as not to be parallel to a lateral direction of the substrate.

公开(公告)号：US20160284453A1

公开(公告)日：2016-09-29

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 ,  H01Q1/24 ,  H01Q1/38

CPC classification number: H01F1/10 ,  C04B35/26 ,  C04B35/62625 ,  C04B35/62675 ,  C04B35/638 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/6025 ,  C04B2235/72 ,  C04B2235/726 ,  C04B2235/77 ,  H01F1/344 ,  H01Q1/243 ,  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.

Abstract translation: 本发明的目的或技术任务是提供一种铁氧体烧结片，其具有致密的铁氧体微结构，其具有大的μ'值，小的μ“值和小的μ'值的小的温度变化。 本发明涉及铁氧体陶瓷，其组成为：Fe2O3为47.5〜49.8摩尔％，NiO为13.5〜19.5摩尔％，ZnO为21〜27摩尔％，CuO为7.5〜12.5摩尔％，CuO为0.2〜0.8摩尔％ CoO，所有的摩尔量均以各自的氧化物计算，铁素体陶瓷还包含0.2〜1.4重量％的SnO 2和0.005〜0.03重量％的S，密度为5.05〜5.30g / cm 3; 以及铁氧体烧结片，在其表面形成有槽或槽的铁氧体烧结板和形成在铁氧体烧结板上的粘合层和/或保护层。

公开(公告)号：US20170117075A1

公开(公告)日：2017-04-27

申请号：US15312288

申请日：2015-05-21

Applicant: TODA KOGYO CORP.

Inventor： Yoji OKANO ,  Makoto SADAI ,  Shingo HONDA ,  Mitsunori KURUMADA ,  Akihiro YOSHIDA ,  Kazuyoshi KAWATO

IPC: H01F1/34 ,  C04B35/26 ,  H05K9/00

Abstract: The present invention relates to a ferrite sintered plate having a composition comprising 47 to 50 mol % of Fe2O3, 7 to 26 mol % of NiO, 13 to 36 mol % of ZnO, 7 to 12 mol % of CuO and 0 to 1.5 mol % of CoO, as calculated in terms of the respective oxides, in which the ferrite sintered plate has a volume resistivity of 1×108 to 1×1012·cm and a thickness of 10 to 60 μm; 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, in which the ferrite sintered sheet has a magnetic permeability at 500 kHz a real part of which is 120 to 800 and an imaginary part of which is 0 to 30, and a product (μm) of the real part of the magnetic permeability at 500 kHz of the ferrite sintered sheet and a thickness of the ferrite sintered plate is 5000 to 48000. The ferrite sintered plate and the ferrite sintered sheet according to the present invention have a high volume resistivity as well as a large μ′ value and a small μ″ value of a magnetic permeability thereof, and therefore can be suitably used as a shielding plate in a digitizer system.

公开(公告)号：US20150302958A1

公开(公告)日：2015-10-22

申请号：US14439283

申请日：2013-10-29

Applicant: TODA KOGYO CORP.

Inventor： Makoto SADAI ,  Tomohiro DOTE ,  Yoji OKANO

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

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.

Abstract translation: 本发明涉及一种Ni-Zn-Cu-Co系铁氧体烧结体，其特征在于，其组成为：Fe2O3为45〜50摩尔％，NiO为10〜25摩尔％，ZnO为15〜36摩尔％，2〜14摩尔％ CuO和0.1〜3.5摩尔％的CoO，所有的摩尔量均以各氧化物计算，铁素体烧结片在其表面上设置有沟槽，并且还具有粘合剂层和/或保护层 层。 铁素体烧结片能够在保持磁导率的小μ“的情况下表现出增加的磁导率μ'值。