公开(公告)号：US20250087403A1

公开(公告)日：2025-03-13

申请号：US18960557

申请日：2024-11-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takuya ISHIDA ,  Makoto YAMAMOTO ,  Katsutoshi UJI ,  Yuya ISHIDA ,  Mitsuru ODAHARA

IPC: H01F27/255 ,  H01F1/147 ,  H01F41/02

Abstract: A metal magnetic particle provided with an oxide layer on a surface of an alloy particle containing Fe and Si, wherein the oxide layer has a first oxide layer, a second oxide layer, and a third oxide layer from the alloy particle side. Also, in line analysis of element content by using a scanning transmission electron microscope-energy dispersive X-ray spectroscopy, the first oxide layer is a layer where Si content takes a local maximum value, the second oxide layer is a layer where Fe content takes a local maximum value, and the third oxide layer is a layer where Si content takes a local maximum value.

公开(公告)号：US20230343512A1

公开(公告)日：2023-10-26

申请号：US18345907

申请日：2023-06-30

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takuya ISHIDA ,  Makoto YAMAMOTO ,  Katsutoshi UJI ,  Yuya ISHIDA ,  Mitsuru ODAHARA

IPC: H01F41/02 ,  H01F1/147 ,  B22F1/16 ,  B22F1/142

CPC classification number: H01F41/0246 ,  H01F1/14766 ,  B22F1/16 ,  B22F1/142 ,  B22F2302/25 ,  B22F2301/35 ,  Y10T428/12181 ,  B22F1/145

Abstract: A metal magnetic particle provided with an oxide layer on a surface of an alloy particle containing Fe and Si. The oxide layer has a first oxide layer, a second oxide layer, and a third oxide layer from a side of the alloy particle. All of the first oxide layer, the second oxide layer, and the third oxide layer contain Si. Also, in line analysis of element content by using a scanning transmission electron microscope-energy dispersive X-ray spectroscopy, the first oxide layer is a layer having Fe content smaller than Si content in the alloy particle, the second oxide layer is a layer having Fe content larger than the Si content in the alloy particle, and the third oxide layer is a layer having Fe content smaller than the Si content in the alloy particle.

公开(公告)号：US20210304931A1

公开(公告)日：2021-09-30

申请号：US17213121

申请日：2021-03-25

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takuya ISHIDA ,  Makoto YAMAMOTO ,  Katsutoshi UJI ,  Yuya ISHIDA ,  Mitsuru ODAHARA

IPC: H01F1/147 ,  B22F1/02 ,  B22F1/00

Abstract: A metal magnetic particle provided with an oxide layer on a surface of an alloy particle containing Fe and Si. The oxide layer has a first oxide layer, a second oxide layer, and a third oxide layer from a side of the alloy particle. All of the first oxide layer, the second oxide layer, and the third oxide layer contain Si. Also, in line analysis of element content by using a scanning transmission electron microscope-energy dispersive X-ray spectroscopy, the first oxide layer is a layer having Fe content smaller than Si content in the alloy particle, the second oxide layer is a layer having Fe content larger than the Si content in the alloy particle, and the third oxide layer is a layer having Fe content smaller than the Si content in the alloy particle.

公开(公告)号：US20180308620A1

公开(公告)日：2018-10-25

申请号：US15948537

申请日：2018-04-09

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Gota SHINOHARA ,  Takuya ISHIDA

IPC: H01F27/29 ,  H01F27/28 ,  H01F27/32 ,  H01F27/24

CPC classification number: H01F27/29 ,  H01F1/15333 ,  H01F1/15383 ,  H01F27/24 ,  H01F27/2823 ,  H01F27/327 ,  H01F41/0206 ,  H01F41/04

Abstract: A coil component includes a magnetic portion that includes metal particles and a resin material, a coil conductor embedded in the magnetic portion, and outer electrodes electrically connected to the coil conductor. The bottom surface of the magnetic portion includes grooves, and end portions of the coil conductor, extend into the grooves.

公开(公告)号：US20160372255A1

公开(公告)日：2016-12-22

申请号：US15175655

申请日：2016-06-07

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Yoshifumi MAKI ,  Takuya ISHIDA ,  Hirotsugu TOMIOKA ,  Shinya HIRAI ,  Daisuke KATAYAMA

IPC: H01F27/28 ,  H01F41/04 ,  H01F27/24

CPC classification number: H01F27/2804 ,  H01F17/0006 ,  H01F17/0033 ,  H01F17/045 ,  H01F27/24 ,  H01F27/292 ,  H01F41/041 ,  H01F41/046 ,  H01F2027/2809

Abstract: A manufacturing method that is capable of forming an electrode on any part of a surface of a sintered ceramic body in accordance with a simple approach, and a ceramic electronic component manufactured by the method. The method for manufacturing a ceramic electronic component includes steps of preparing a sintered ceramic body containing a metal oxide, irradiating an electrode formation region on a surface of the ceramic body with a laser to partially lower resistance of the ceramic body, thereby forming a low-resistance portion, and subjecting the ceramic body to plating to deposit a plated metal serving as an electrode on the low-resistance portion, and growing the plated metal to extend over the entire electrode formation region.

Abstract translation: 能够根据简单的方法在烧结陶瓷体的表面的任何部分上形成电极的制造方法和通过该方法制造的陶瓷电子部件。 陶瓷电子部件的制造方法包括以下步骤：制备包含金属氧化物的烧结陶瓷体，用激光照射陶瓷体表面上的电极形成区域，以部分降低陶瓷体的电阻， 电阻部分，并且对陶瓷体进行电镀以在低电阻部分上沉积用作电极的电镀金属，并且使电镀金属生长在整个电极形成区域上延伸。

公开(公告)号：US20240112843A1

公开(公告)日：2024-04-04

申请号：US18475145

申请日：2023-09-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Natsumi YOSHIDA ,  Takashi YOSHIDA ,  Yuki NAKAMURA ,  Takuya ISHIDA

IPC: H01F17/04 ,  H01F27/29

CPC classification number: H01F17/045 ,  H01F27/29

Abstract: A coil component includes a drum core including a winding core portion, and first and second flange portions; and a first metal terminal which includes a bonding portion, a connecting portion, a mounting portion, an extending portion, and a joining portion. The first flange portion includes a main body portion, an end-surface-side protruding portion protruding from an outer end surface of the main body portion and a bottom-surface-side protruding portion protruding from a bottom surface of the main body portion. In a direction parallel to a second axis, a shortest distance from an end of the end-surface-side protruding portion on the second positive direction side to the joining portion is a first distance. A maximum distance from the end of the end-surface-side protruding portion to a side end surface of the end-surface-side protruding portion is a second distance. The first distance is larger than the second distance.

公开(公告)号：US20230368967A1

公开(公告)日：2023-11-16

申请号：US18315406

申请日：2023-05-10

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Natsumi YOSHIDA ,  Takuya ISHIDA ,  Takuma SAGARA ,  Takashi YOSHIDA ,  Yuki NAKAMURA

IPC: H01F27/29 ,  H01F27/28 ,  H01F27/24

CPC classification number: H01F27/292 ,  H01F27/2828 ,  H01F27/24

Abstract: A decrease in mounting strength of a first metal terminal is suppressed in a coil component. A coil component includes a drum core including a winding core portion, first and second flange portions, a first metal terminal attached to the first flange portion, and a first wire. The first flange portion is connected to a first end in a direction along a central axis of the winding core portion. A first connection end of the first wire is joined to the first metal terminal. The first flange portion protrudes outward with respect to the winding core portion in a first positive direction. The first metal terminal includes a bonding portion, a mounting portion, and a coupling portion connecting the bonding portion and the mounting portion. The bonding portion is joined to an outer surface of the first flange portion with an adhesive interposed therebetween.

公开(公告)号：US20230368965A1

公开(公告)日：2023-11-16

申请号：US18313157

申请日：2023-05-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masayuki ISHIDA ,  Hiroyuki HONDA ,  Takuma SAGARA ,  Shingo NAKAMOTO ,  Takuya ISHIDA

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/30

CPC classification number: H01F27/2828 ,  H01F27/292 ,  H01F27/306

Abstract: A coil component includes a drum core including a winding core portion, first and second flange portions, a first metal terminal attached to the first flange portion, and a first wire. The first flange portion is connected to a first end of the winding core portion in a direction along a central axis of the winding core portion. A first connection end of the first wire is joined to the first metal terminal. When viewed in a direction orthogonal to both a first positive direction and the inward direction, an acute angle formed by a virtual straight line parallel to the central axis and a tangent at an end of an inclined surface of the first metal terminal in the inward direction is larger than an acute angle formed by a virtual straight line and a tangent at an end of the inclined surface in the outward direction.

公开(公告)号：US20200258678A1

公开(公告)日：2020-08-13

申请号：US16783299

申请日：2020-02-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Akio IGARASHI ,  Yuuji IGARASHI ,  Takao MIYAMOTO ,  Takuya ISHIDA ,  Koji ONISHI

IPC: H01F27/29 ,  H01F27/24 ,  H01F27/28

Abstract: An adhesive layer is in contact with a rising portion of a metal terminal and an outer end surface of a flange portion of a drum-shaped core. A surface of the rising portion that faces the outer end surface is an inclined surface that inclines with respect to the outer end surface. The thickest portion of the adhesive layer is located near a position at which a distance between the inclined surface and the outer end surface is largest. The thickness of the thickest portion of the adhesive layer is 13 μm or more.

公开(公告)号：US20200058421A1

公开(公告)日：2020-02-20

申请号：US16663169

申请日：2019-10-24

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takuya ISHIDA ,  Gota SHINOHARA

IPC: H01F1/153 ,  H01F27/255 ,  H01F41/02 ,  H01F27/29 ,  H01F1/147 ,  H01F17/04 ,  H01F27/28

Abstract: A coil component includes a magnetic portion that includes metal particles and a resin material, a coil conductor embedded in the magnetic portion, and outer electrodes electrically connected to the coil conductor. The average particle diameter of the metal particles in the magnetic portion is 1 μm or more and 5 μm or less, and the CV value of the metal particles is 50% or more and 90% or less.