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1.发明授权公开(公告)号：US11854724B2
公开(公告)日：2023-12-26
申请号：US17370800
申请日：2021-07-08
发明人： Yoko Orimo , Tomoo Kashiwa
IPC分类号： H01F1/147 , C23C8/14 , C22C38/02 , C22C38/18 , B22F1/16 , B22F1/142 , B22F1/145 , C22C38/00 , H01F27/255 , H01F17/04
CPC分类号： H01F1/147 , B22F1/142 , B22F1/145 , B22F1/16 , C22C38/00 , C22C38/02 , C22C38/18 , C23C8/14 , B22F2301/35 , C22C2202/02 , H01F17/045 , H01F27/255 , H01F2017/048
摘要： A metal magnetic powder is constituted by metal magnetic grains that each include: a metal phase where the mass percentage of Fe at its center part is lower than that at its contour part; and an oxide film covering the metal phase so as to allow the magnetic body resistant to magnetic saturation and low in iron loss.
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公开(公告)号：US11776734B2
公开(公告)日：2023-10-03
申请号：US16516616
申请日：2019-07-19
发明人： Natsuko Sato , Tomoo Kashiwa
CPC分类号： H01F27/2804 , H01F17/0013 , H01F17/04 , H01F27/2823 , H01F27/29 , H01F2017/0066 , H01F2027/2809
摘要： A coil element according to one embodiment includes: an insulator body including first insulating layers and second insulating layers laminated in a stacking direction; first conductive patterns formed on the first insulating layers; and second conductive patterns formed on the second insulating layers. The insulator body includes a first end region situated at a top in the stacking direction, a second end region situated at a bottom in the stacking direction, and an intermediate region situated between the first end region and the second end region. The insulator body includes a first portion and a second portion that is an area other than the first portion. The first portion covers upper and lower surfaces of one or more intermediate first conductive patterns in the intermediate region among the plurality of first conductive patterns. The electrical resistivity of the first portion is higher than that of the second portion.
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公开(公告)号：US12080467B2
公开(公告)日：2024-09-03
申请号：US17131258
申请日：2020-12-22
发明人： Hidenori Aoki , Tomoo Kashiwa
CPC分类号： H01F27/292 , H01F17/0013 , H01F27/2828 , H01F27/306 , H05K3/301
摘要： One aspect of the present invention provides a coil component including a base body having a first surface extending along a coil axis and a second surface opposing the first surface, a first external electrode provided on the base body, a second external electrode provided on the base body, and a coil conductor electrically connected to the first and second external electrodes, where the coil conductor extends around the coil axis. In one embodiment, the coil conductor has a winding portion, the winding portion has a plurality of first conductor portions and one or more second conductor portions smaller in number than the first conductor portions, and the first and second conductor portions alternate with and are connected to each other, and a distance between the first conductor portions and the first surface is greater than a distance between the second conductor portions and the second surface.
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公开(公告)号：US11551856B2
公开(公告)日：2023-01-10
申请号：US17186994
申请日：2021-02-26
发明人： Satoshi Tokunaga , Tomoo Kashiwa
摘要： A coil component according to one or more embodiments includes a base body having first to sixth surfaces, and a coil conductor including a winding portion that extends around a coil axis intersecting the first and second surfaces. The winding portion includes first, second, third, and fourth portions facing the third, fourth, fifth, and sixth surfaces, respectively when viewed from a direction of the coil axis. The radii of curvature of the first and second portions are both smaller than the radii of curvature of the third and fourth portions. When viewed from the direction of the coil axis, the distance between the first portion and the third surface and the distance between the second portion and the fourth surface are both larger than the distance between the third portion and the fifth surface and the distance between the fourth portion and the sixth surface.
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公开(公告)号：US11476035B2
公开(公告)日：2022-10-18
申请号：US16828835
申请日：2020-03-24
发明人： Makoto Shimizu , Tomoo Kashiwa
摘要： A coil component includes: a magnetic body part having a first compact containing a first magnetic material and a first resin, and a second compact placed on the outside of the first compact and containing a second magnetic material and a second resin; a coil formed by a conductive wire which comprises a metal conductor covered with an insulating film, and embedded in the magnetic body part; and lead parts of the coil placed on the outside of the first compact; wherein the filling rate of the first magnetic material constituting the first compact is higher than the filling rate of the second magnetic material constituting the second compact. The filling rate of magnetic grains can be improved while also ensuring the insulating property of the coil, etc.
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公开(公告)号：US11469029B2
公开(公告)日：2022-10-11
申请号：US16584702
申请日：2019-09-26
发明人： Takayuki Arai , Tomoo Kashiwa
摘要： In an exemplary embodiment, a multilayer coil component includes: a substrate body; and a coil embedded in the substrate body and containing a wound conductor; wherein the substrate body has: magnetic layers containing multiple metal magnetic grains, provided around conductor layers that constitute parts of the wound conductor in a direction roughly orthogonal to the coil axis of the coil; and multiple high-hardness insulating grains harder than the multiple metal magnetic grains and smaller in average grain size than the multiple metal magnetic grains, provided between a pair of the conductor layers adjacent to each other in the direction of the coil axis and also between a pair of the magnetic layers adjacent to each other in the direction of the coil axis. The multilayer coil component can prevent shorting in the wound conductor while increasing the inductance.
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7.发明公开公开(公告)号：US20240334599A1
公开(公告)日：2024-10-03
申请号：US18619348
申请日：2024-03-28
发明人： Takayuki Arai , Tomoo Kashiwa
CPC分类号： H05K1/111 , H05K1/181 , H05K2203/0361
摘要： Provided is an electronic component including a base body, a first internal element, a first external electrode, and a second external electrode. The first external electrode has a first outer metal layer and a first inner metal layer that is provided between the first outer metal layer and the first internal element, the second external electrode has a second outer metal layer and a second inner metal layer that is provided between the second outer metal layer and the first internal element, and the first inner metal layer has a lower laser absorption rate than any of the first outer metal layer and the second outer metal layer, and the second inner metal layer has a lower laser absorption rate than any of the first outer metal layer and the second outer metal layer.
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公开(公告)号：US12087496B2
公开(公告)日：2024-09-10
申请号：US18341348
申请日：2023-06-26
发明人： Hidenori Aoki , Tomoo Kashiwa
CPC分类号： H01F27/292 , H01F17/0013 , H01F27/2828 , H01F27/306 , H05K3/301
摘要： A method for manufacturing a coil component comprises: forming a coil conductor including a winding portion, the winding portion including a plurality of first conductor portions and one or more second conductor portions smaller in number than the first conductor portions, the first and second conductor portions alternate with and connected to each other; forming a molded body by molding composite magnetic material including metal magnetic particles and a binder with the coil conductor being disposed inside the composite magnetic material; and heating the molded body to produce a magnetic base body. The magnetic base body is formed such that a distance between the first conductor portions and a first surface of the magnetic body is greater than a distance between the second conductor portions and a second surface of the magnetic base body opposite to the first surface, by molding, cutting or polishing.
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公开(公告)号：US11862387B2
公开(公告)日：2024-01-02
申请号：US18079287
申请日：2022-12-12
发明人： Satoshi Tokunaga , Tomoo Kashiwa
CPC分类号： H01F27/292 , H01F27/245 , H01F27/2804 , H01F41/0233 , H01F41/043 , H05K1/181 , H01F2027/2809 , H05K2201/1003
摘要： A coil component according to one or more embodiments includes a base body having first to sixth surfaces, and a coil conductor including a winding portion that extends around a coil axis intersecting the first and second surfaces. The winding portion includes first, second, third, and fourth portions facing the third, fourth, fifth, and sixth surfaces, respectively when viewed from a direction of the coil axis. The radii of curvature of the first and second portions are both smaller than the radii of curvature of the third and fourth portions. When viewed from the direction of the coil axis, a distance between the first portion and the third surface is larger than a distance between the third portion and the fifth surface.
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公开(公告)号：US11749450B2
公开(公告)日：2023-09-05
申请号：US17864218
申请日：2022-07-13
发明人： Makoto Shimizu , Tomoo Kashiwa
CPC分类号： H01F27/292 , H01F27/06 , H01F27/24 , H01F27/2823 , H05K1/181 , H01F2027/065 , H05K2201/1003
摘要： A coil component includes: a core part including: a winding shaft; and a flange part provided on an axial-direction end of the winding shaft, which has an exterior face on the opposite side of the winding shaft, first and second side faces, and first and second groove parts provided on the exterior face and having a cut-out part on each the first and second side faces; a coil part including: a winding part of a conductor wound around the winding shaft; and two lead parts of the conductor led out from the winding part; and two terminal parts formed on the exterior face of the flange part; wherein the two lead parts are led in from the cut-out parts on the first and second side faces and fitted inside the groove parts, respectively, on the exterior face, and included in the pair of terminal parts, respectively.
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