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公开(公告)号：US11101707B2
公开(公告)日：2021-08-24
申请号：US15560813
申请日：2016-03-24
Applicant: NITTO DENKO CORPORATION
Inventor： Makoto Fujihara , Kenichi Fujikawa , Takashi Yamamoto , Shoichiro Saito
IPC: H02K1/27 , B22F3/105 , H02K15/03 , H01F7/02 , H02K1/22 , C22C38/00 , H01F1/053 , H01F1/057 , H01F1/08 , H01F41/02
Abstract: This invention provides for a rare-earth permanent magnet-forming sintered body obtained by integrally sintering magnet material particles containing a rare-earth substance while shaping the magnet material particles, a rare-earth permanent magnet obtained by magnetizing the sintered body, and a rotary machine in which the permanent magnet is embedded.
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公开(公告)号：US10573440B2
公开(公告)日：2020-02-25
申请号：US15771125
申请日：2016-11-17
Applicant: NITTO DENKO CORPORATION
Inventor： Makoto Fujihara , Kenichi Fujikawa , Shoichiro Saito
Abstract: This invention provides for a rare-earth permanent magnet-forming sintered body having an integral sintered structure of magnet material particles containing a rare-earth substance. The integral sintered structure is formed in a three-dimensional shape having: a cross-section with a shape defined by a radially outer-side arc-shaped surface having a first curvature radius, a radially inner-side arc-shaped surface having a second curvature radius less than the first curvature radius and having an arc shape concentric with the outer-side arc-shaped surface; and a first end face and a second end face each of which is a radially-extending face along a virtual radial line extending from a curvature center of the arc shapes; and an axial length extending in a direction perpendicular to the cross-section.
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公开(公告)号：US11239014B2
公开(公告)日：2022-02-01
申请号：US15560812
申请日：2016-03-24
Applicant: NITTO DENKO CORPORATION
Inventor： Makoto Fujihara , Toshinobu Hoshino , Shoichiro Saito , Kenichi Fujikawa
Abstract: Provided are a rare-earth magnet capable of realizing a high magnetic flux amount without using any back yoke, and a linear motor comprising a movable element using the rare-earth permanent magnet. A rare-earth permanent magnet-forming sintered body for forming a permanent magnet is integrally sintered while being formed into a given three-dimensional shape with a lengthwise cross-section having a first surface extending in a length direction thereof, a second surface lying at a distance from the first surface in a thickness direction thereof and extending in the length direction, and an edge surface of each of lengthwise opposite ends thereof. This sintered body is formed such that easy magnetization axes of the magnet material particles included in a central region thereof are oriented in such a manner as to be directed along an arch-shaped path.
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Patent Agency Ranking
公开(公告)号：US10544341B2
公开(公告)日：2020-01-28
申请号：US15307763
申请日：2014-12-16
Applicant: NITTO DENKO CORPORATION , NITTO SHINKO CORPORATION
Inventor： Kenichi Fujikawa , Yoshiharu Hatakeyama , Miho Yamaguchi , Yuji Yamagishi , Akihiro Oohashi
IPC: C09K5/14 , C08K3/38 , C08K3/04 , C08K3/22 , C08K3/28 , C08K3/36 , C08J3/20 , C08J5/18 , C08L63/00
Abstract: The present invention provides a thermal conductive polymer composition with low probability for mixing of an air bubble in a thermal conductive molded article, which is a thermal conductive polymer composition including thermal conductive inorganic particles having a specific particle size distribution and an electrically insulating polymer.
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公开(公告)号：US11623276B2
公开(公告)日：2023-04-11
申请号：US16616653
申请日：2018-05-25
Applicant: NITTO DENKO CORPORATION
Inventor： Kenichi Fujikawa , Shoichiro Saito , Katsuya Kume , Takashi Yamamoto
Abstract: A method for manufacturing a magnet includes (1) a step of preparing three or more unmagnetized magnet materials of which magnetization easy axes are oriented in predetermined directions, and adhering the unmagnetized magnet materials with each other to make an assembly, and (2) a step of applying a curved pulse magnetic field to the assembly to magnetize the assembly, wherein in the step (2), the unmagnetized magnet materials are magnetized into magnet blocks, and an angle θ (where 0≤θ≤180 degrees holds) formed by magnetization directions of at least a pair of magnet blocks adjacent to each other is in a range of 30 degrees to 120 degrees.
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公开(公告)号：US20150090922A1
公开(公告)日：2015-04-02
申请号：US14373564
申请日：2013-02-07
Applicant: NITTO DENKO CORPORATION
Inventor： Yoshiharu Hatakeyama , Kenichi Fujikawa , Miho Yamaguchi , Saori Yamamoto , Seiji Izutani
IPC: C09K5/14
CPC classification number: C09K5/14 , B29C43/24 , B29C43/265 , B29C43/30 , B29K2063/00 , B29K2105/16 , B29K2509/04 , B29K2995/0013 , B29K2995/0094 , B29L2007/002 , B29L2031/3406 , H01L2924/0002 , H01L2924/00
Abstract: A thermally conductive sheet is a thermally conductive sheet 1 formed from a thermally conductive composition containing boron nitride particles 2 in a plate shape and a rubber component. The content ratio of the boron nitride particles 2 is 35 vol % or more and the thermal conductivity in a direction perpendicular to a plane direction PD of the thermally conductive sheet 1 is 4 W/m·K or more.
Abstract translation: 导热片是由含有板状氮化硼粒子2和橡胶成分的导热性组合物形成的导热片1。 氮化硼粒子2的含有率为35体积％以上，导热性片1的与平面方向PD垂直的方向的导热率为4W / m·K以上。
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公开(公告)号：US09663635B2
公开(公告)日：2017-05-30
申请号：US15123299
申请日：2014-12-16
Applicant: NITTO DENKO CORPORATION , NITTO SHINKO CORPORATION
Inventor： Yoshiharu Hatakeyama , Kenichi Fujikawa , Miho Yamaguchi , Yuji Yamagishi , Akihiro Oohashi
IPC: C08K9/00 , C08K9/04 , C01B21/072 , C08K3/28 , C09K5/14
CPC classification number: C08K9/04 , C01B21/072 , C01B21/0726 , C08K3/28 , C08K2003/282 , C09K5/14
Abstract: The present invention provides, as an aluminum nitride powder excellent in the water resistance, an aluminum nitride powder subjected to a surface treatment with a predetermined organic compound. The present invention also provides a resin composition including the aluminum nitride powder and a resin, and a thermal conductive molded article obtained by molding the resin composition.
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公开(公告)号：US20140367883A1
公开(公告)日：2014-12-18
申请号：US14375865
申请日：2013-02-07
Applicant: NITTO DENKO CORPORATION
Inventor： Yoshiharu Hatakeyama , Saori Yamamoto , Miho Yamaguchi , Seiji Izutani , Kenichi Fujikawa
CPC classification number: C09K5/14 , B29C43/24 , B29C43/265 , B29C43/30 , B29K2063/00 , B29K2105/16 , B29K2509/04 , B29K2995/0013 , B29K2995/0094 , B29L2007/002 , B29L2031/3406 , H01L2924/0002 , H01L2924/00
Abstract: A method for producing a thermally conductive sheet includes the steps of preparing a material component containing boron nitride particles in a plate shape and a polymer matrix, forming a long-length sheet from the material component with a calender, and pressing the long-length sheet.
Abstract translation: 制造导热片的方法包括以下步骤：制备含有板状氮化硼颗粒的材料成分和聚合物基质，用砑光机从材料成分形成长长片材，并且将长条片材 。
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