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公开(公告)号：US20230191484A1
公开(公告)日：2023-06-22
申请号：US18169123
申请日：2023-02-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takashi TOMOHIRO , Noriko SHIMIZU , Kenichi ARAKI , Eiji ISO , Keita MUNEUCHI , Isao IDA
IPC: B22F3/24 , H01F17/04 , H01F41/10 , C22C32/00 , H01F1/22 , B22F1/102 , H01F1/147 , H01F1/20 , H01F27/255 , H01F27/29
CPC classification number: B22F3/24 , H01F17/04 , H01F41/10 , C22C32/0094 , H01F1/22 , B22F1/102 , H01F1/14733 , H01F1/14766 , H01F1/20 , H01F27/255 , H01F27/292 , C22C2202/02 , B22F2998/10 , B22F2999/00 , H01F2017/048
Abstract: A coil component includes a body that is made of a composite material containing a resin material and metal powder, a coil conductor which is provided in the body and an end portion of which is exposed on an end face of the body, and a metal film that is provided on an outer surface of the body and that is electrically connected to the coil conductor on the end face in the outer surface. The outer surface of the body has a contact area that is in contact with the metal film. Multiple particles of the metal powder escape from the resin material and are in contact with each other in the contact area of the body.
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公开(公告)号：US20220392694A1
公开(公告)日：2022-12-08
申请号：US17820196
申请日：2022-08-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Keita MUNEUCHI
Abstract: A surface-mount inductor comprises a molded body containing a metal magnetic powder; at least one coil buried in the molded body such that lead-out end parts at both ends of the coil are at least partially exposed on a surface of the molded body; and an external terminal formed over an exposed surface of each of the lead-out end parts. A metal magnetic powder exposed portion is formed at least around the exposed surface. The external terminal at least includes a first plating layer formed over the metal magnetic powder exposed portion and the exposed surface of the lead-out end part, and a conductive paste layer formed on the first plating layer and made of a solidified conductive paste. Consequently, the surface mount inductor comprises an external terminal having high connection reliability.
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公开(公告)号：US20220392687A1
公开(公告)日：2022-12-08
申请号：US17820786
申请日：2022-08-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Keita MUNEUCHI , Eiji ISO , Isao IDA , Kenichi ARAKI , Noriko SHIMIZU , Takashi TOMOHIRO
IPC: H01F27/255 , H01F17/04 , H01F17/00 , B22F3/24 , C22C32/00 , H01F41/04 , B22F1/16 , H01F1/147 , H01F1/20 , H01F27/29
Abstract: An electronic component includes an element body made of a composite material of a resin material and metal powder. A plurality of particles of the metal powder are exposed from the resin material and make contact with one another on the outer surface of the element
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公开(公告)号：US20240071676A1
公开(公告)日：2024-02-29
申请号：US18366502
申请日：2023-08-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Keita MUNEUCHI , Hideaki OOI , Yoshiharu SATOU
IPC: H01F27/255 , H01F27/28 , H01F41/02 , H01F41/04
CPC classification number: H01F27/255 , H01F27/2823 , H01F41/0246 , H01F41/04 , H01F27/292
Abstract: An inductor includes a base body including a coil conductor and a core in which the coil conductor is embedded. The coil conductor includes a wound band-shaped conductive wire. The core contains soft magnetic particles and a resin. The base body is rectangular-parallelepiped-shaped and includes a pair of principal faces that are opposite to each other, a pair of end faces that are opposite to each other and adjacent to the principal faces, and a pair of side faces that are opposite to each other and adjacent to the principal faces. A base-body protection layer is on a surface of the base body. The coil conductor includes a wound section and extended sections extending from the wound section. The extended sections have surfaces exposed on the surface of the base body at respective exposed portions on each of which a metal layer that is an outer electrode is formed.
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公开(公告)号：US20180308628A1
公开(公告)日：2018-10-25
申请号：US16019399
申请日：2018-06-26
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Keita MUNEUCHI
CPC classification number: H01F27/292 , H01F27/28 , H01F27/2823 , H01F27/29 , H01F41/0246 , H01F41/04 , H01F41/10
Abstract: A surface-mount inductor comprises a molded body containing a metal magnetic powder; at least one coil buried in the molded body such that lead-out end parts at both ends of the coil are at least partially exposed on a surface of the molded body; and an external terminal formed over an exposed surface of each of the lead-out end parts. A metal magnetic powder exposed portion is formed at least around the exposed surface. The external terminal at least includes a first plating layer formed over the metal magnetic powder exposed portion and the exposed surface of the lead-out end part, and a conductive paste layer formed on the first plating layer and made of a solidified conductive paste. Consequently, the surface mount inductor comprises an external terminal having high connection reliability.
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Patent Agency Ranking
公开(公告)号：US20240071677A1
公开(公告)日：2024-02-29
申请号：US18366504
申请日：2023-08-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Keita MUNEUCHI , Takehiro YAWATA
IPC: H01F27/255 , H01F27/28 , H01F27/32 , H01F41/02 , H01F41/10
CPC classification number: H01F27/255 , H01F27/2823 , H01F27/32 , H01F41/0246 , H01F41/10 , H01F27/292
Abstract: An inductor includes a base body including a coil conductor and a core in which the coil conductor is embedded. The coil conductor includes a wound band-shaped conductive wire, and the core contains magnetic particles and a resin. The band-shaped conductive wire has a cross-sectional shape including principal faces that are parallel to each other and end faces that connect the principal faces to each other. The coil conductor is formed by winding the band-shaped conductive wire having a covering layer including an insulating layer and a fusion layer. The insulating layer covers a surface of the band-shaped conductive wire. The fusion layer covers the insulating layer. A recess defined by the insulating layer is in an end face of a wound section, in which the band-shaped conductive wire is wound, in an axial direction, and is at least partially filled with a resin of the fusion layer.
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公开(公告)号：US20180247747A1
公开(公告)日：2018-08-30
申请号：US15967062
申请日：2018-04-30
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takashi TOMOHIRO , Noriko SHIMIZU , Kenichi ARAKI , Eiji ISO , Keita MUNEUCHI , Isao IDA
CPC classification number: H01F1/20 , B22F1/02 , B22F3/24 , B22F2998/10 , B22F2999/00 , C22C32/0094 , C22C2202/02 , H01F1/14733 , H01F1/14766 , H01F1/22 , H01F17/04 , H01F27/255 , H01F27/292 , H01F41/10 , H01F2017/048 , B22F2003/248 , B22F2202/01 , B22F1/0059
Abstract: A coil component includes a body that is made of a composite material containing a resin material and metal powder, a coil conductor which is provided in the body and an end portion of which is exposed on an end face of the body, and a metal film that is provided on an outer surface of the body and that is electrically connected to the coil conductor on the end face in the outer surface. The outer surface of the body has a contact area that is in contact with the metal film. Multiple particles of the metal powder escape from the resin material and are in contact with each other in the contact area of the body.
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公开(公告)号：US20170178793A1
公开(公告)日：2017-06-22
申请号：US15446563
申请日：2017-03-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Keita MUNEUCHI
IPC: H01F27/28 , H01F27/29 , H01F41/076 , H01F27/255
CPC classification number: H01F27/2823 , H01F17/04 , H01F27/255 , H01F27/292 , H01F41/076 , H01F41/10 , H01F2017/048
Abstract: A surface mounted inductor is equipped with a coil formed by winding a conductive wire, and a formed body in which the coil is sealed with a sealing material that mainly contains metal magnetic powder and a resin. The coil is embedded so that surfaces of lead-out ends are exposed on surfaces of the formed body. The resin at portions of surfaces of the formed body where external terminals are formed is removed, and the metal magnetic powder and a plating layer forming the external terminals are joined to each other, thereby connecting the external terminals and the lead-out ends of the coil.
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公开(公告)号：US20240071671A1
公开(公告)日：2024-02-29
申请号：US18366506
申请日：2023-08-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Keita MUNEUCHI , Masayoshi MIYAKAWA , Takehiro YAWATA
CPC classification number: H01F17/0013 , H01F27/2828 , H01F27/292
Abstract: An inductor includes a base body including a coil conductor and a core in which the coil conductor is embedded. The coil conductor includes a wound section in which a conductive wire is wound. The base body is substantially rectangular-parallelepiped-shaped and includes a pair of principal faces that are opposite to each other, a pair of side faces that are opposite to each other and adjacent to the principal faces, and two end faces that are opposite to each other and adjacent to the principal and side faces. Two extended sections extend from respective ones of two extending points on an outer periphery of the wound section. The two extended sections include respective transition portions and respective exposed portions, the transition portions connect the extending points to exposed points exposed on the two end faces of the base body, and the exposed portions are exposed on the end faces.
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公开(公告)号：US20220102036A1
公开(公告)日：2022-03-31
申请号：US17486789
申请日：2021-09-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Keiichi ISHIDA , Keita MUNEUCHI , Nobuyuki FUJISAWA , Yoshinobu KIMURA , Yoshihiko HATTORI
IPC: H01F1/147 , H01F27/28 , H01F27/255 , H01F41/02
Abstract: A magnetic compact includes first magnetic particles, second magnetic particles with larger particle sizes than the first magnetic particles, and a resin. The area ratios calculated for multiple regions of the magnetic compact have a standard deviation of 0.40 or less, where area ratio=(total area of first magnetic particles)/(total area of second magnetic particles).
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