公开(公告)号：US10894745B2

公开(公告)日：2021-01-19

申请号：US15678775

申请日：2017-08-16

Applicant: TDK CORPORATION

Inventor： Kouichi Kakuda ,  Ryuichi Wada ,  Yukio Takahashi ,  Hiroyuki Tanoue ,  Tatsuro Suzuki ,  Takahiro Sato ,  Takashi Suzuki

IPC: H01F1/34 ,  H01F17/04 ,  H01F41/02 ,  C04B35/26 ,  C01G53/00 ,  H01F17/00

Abstract: A ferrite composition includes a main component and an accessory component. The main component includes 43.0 to 51.0 mol % of iron oxide in terms of Fe2O3, 5.0 to 15.0 mol % of copper oxide in terms of CuO, 1.0 to 24.9 mol % of zinc oxide in terms of ZnO, and a remaining part of nickel oxide. The accessory component includes 0.2 to 3.0 pts. wt. of silicon compound in terms of SiO2, 3.0 to 8.0 pts. wt. of cobalt compound in terms of Co3O4 (excluding 3.0 pts. wt.), and 0.2 to 8.0 pts. wt. of bismuth compound in terms of Bi2O3 with respect to 100 pts. wt. of the main component.

公开(公告)号：US10600540B2

公开(公告)日：2020-03-24

申请号：US16026193

申请日：2018-07-03

Applicant: TDK CORPORATION

Inventor： Takahiro Sato ,  Yuya Ishima ,  Shusaku Umemoto ,  Takashi Suzuki ,  Satoru Okamoto ,  Yoshikazu Sakaguchi

IPC: H01F27/30 ,  H01F5/06 ,  H01F17/00

Abstract: A laminated coil component includes an element assembly formed by laminating a plurality of insulation layers and a coil unit formed inside the element assembly by a plurality of coil conductors. The element assembly includes a coil unit arrangement layer which has the coil unit arranged therein, and at least a pair of shape retention layers which is provided to have the coil unit arrangement layer interposed therebetween to retain a shape of the coil unit arrangement layer. The shape retention layer is made from glass-ceramic containing SrO, and a softening point of the coil unit arrangement layer is lower than a softening point or a melting point of the shape retention layer.

公开(公告)号：US10388448B2

公开(公告)日：2019-08-20

申请号：US15617401

申请日：2017-06-08

Applicant: TDK CORPORATION

Inventor： Yuusuke Nagai ,  Takashi Suzuki ,  Kouichi Kakuda ,  Kunihiko Kawasaki ,  Shinichi Kondo ,  Yuya Ishima ,  Shinichi Sato ,  Masaki Takahashi ,  Takashi Endo

IPC: H01F5/00 ,  H01F27/255 ,  H01F17/00

Abstract: A multilayer coil component includes an element body including soft magnetic metal powders and a coil disposed in the element body. The coil includes a plurality of internal conductors electrically connected to each other. The plurality of internal conductors are separated from each other in a first direction and are adjacent to each other in the first direction. An average particle diameter of the soft magnetic metal powders located at an inner side of the coil when viewing from the first direction is larger than an average particle diameter of the soft magnetic metal powders located between the internal conductors adjacent to each other in the first direction.

公开(公告)号：US10020791B2

公开(公告)日：2018-07-10

申请号：US15090129

申请日：2016-04-04

Applicant: TDK CORPORATION

Inventor： Kouichi Kakuda ,  Ryuichi Wada ,  Yukari Akita ,  Yukio Takahashi ,  Takashi Suzuki ,  Asuka Murai ,  Hiroyuki Tanoue

IPC: C04B35/30 ,  H03H7/01 ,  C04B35/26 ,  H01F1/34 ,  H01F17/00 ,  H01F17/04

CPC classification number: H03H7/0115 ,  C04B35/265 ,  H01F1/344 ,  H01F17/0013 ,  H01F17/04 ,  H01F2017/0026 ,  H01F2017/048

Abstract: Provided is a ferrite composition composed of: a main component including 23.0 to 47.0 mole % of Fe compound in terms of Fe2O3, 3.0 to 16.0 mole % of Cu compound in terms of CuO, 4.0 to 39.0 mole % of Zn compound in terms of ZnO, 1.5 to 13.0 mole % of Si compound in terms of SiO2, and a residue of Ni compound; and a subcomponent including, with respect to 100 parts by weight of the main component, 0.1 to 8.0 parts by weight of Co compound in terms of Co3O4 and 0.25 to 5.00 parts by weight of Bi compound in terms of Bi2O3.

公开(公告)号：US09573837B2

公开(公告)日：2017-02-21

申请号：US15015420

申请日：2016-02-04

Applicant: TDK CORPORATION

Inventor： Shusaku Umemoto ,  Takashi Suzuki ,  Masaki Takahashi ,  Hidekazu Sato ,  Yukari Akita ,  Kazuya Tobita ,  Shinichi Kondo

IPC: C03C8/22 ,  C03C8/14 ,  H01F27/28 ,  C03C3/089 ,  H01F17/00 ,  H01F27/29 ,  C03C3/091 ,  C03C3/093 ,  C03C14/00 ,  C04B35/00 ,  C03B19/06

CPC classification number: C03C3/089 ,  C03B19/06 ,  C03C3/091 ,  C03C3/093 ,  C03C8/22 ,  C03C14/004 ,  C04B35/00 ,  H01F17/0013 ,  H01F27/292

Abstract: A glass ceramic composition of the present invention includes a main component composed of a first glass, a second glass, Al2O3, and SiO2. The first glass is SiO2—K2O—B2O3 based glass. The second glass is MO—SiO2—Al2O3—B2O3 based glass (“M” is an alkaline-earth metal) and/or CaO—SiO2—Al2O3—ZnO—ZrO2—B2O3 based glass. In case that the total amount of the main component is 100 wt %, the main component contains the second glass of 12 to 30 wt %, the first and second glass of 40 to 56 wt % in total, and further Al2O3 of 7 to 18 wt %.

Abstract translation: 本发明的玻璃陶瓷组合物包括由第一玻璃，第二玻璃，Al 2 O 3和SiO 2构成的主要成分。 第一块玻璃是SiO2-K2O-B2O3基玻璃。 第二玻璃是MO-SiO2-Al2O3-B2O3基玻璃（“M”是碱土金属）和/或CaO-SiO2-Al2O3-ZnO-ZrO2-B2O3基玻璃。 在主成分的总量为100重量％的情况下，主成分含有12〜30重量％的第二玻璃，第一玻璃和第二玻璃的总量为40〜56重量％，进一步为7〜18的Al 2 O 3 重量％。