DE69618252T2 - Magnetischer Kompositartikel zur Unterdrückung von elektromagnetischen Interferenzen - Google Patents

Magnetischer Kompositartikel zur Unterdrückung von elektromagnetischen Interferenzen

Info

Publication number
DE69618252T2
DE69618252T2 DE69618252T DE69618252T DE69618252T2 DE 69618252 T2 DE69618252 T2 DE 69618252T2 DE 69618252 T DE69618252 T DE 69618252T DE 69618252 T DE69618252 T DE 69618252T DE 69618252 T2 DE69618252 T2 DE 69618252T2
Authority
DE
Germany
Prior art keywords
electromagnetic interference
composite magnetic
suppressing electromagnetic
magnetic article
article
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69618252T
Other languages
English (en)
Other versions
DE69618252D1 (de
Inventor
Shigeyoshi Yoshida
Mitsuharu Sato
Eishu Sugawara
Yutaka Shimada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokin Corp
Original Assignee
Tokin Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=17113698&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69618252(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tokin Corp filed Critical Tokin Corp
Application granted granted Critical
Publication of DE69618252D1 publication Critical patent/DE69618252D1/de
Publication of DE69618252T2 publication Critical patent/DE69618252T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/0083—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive non-fibrous particles embedded in an electrically insulating supporting structure, e.g. powder, flakes, whiskers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/28—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder dispersed or suspended in a bonding agent

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Soft Magnetic Materials (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Hard Magnetic Materials (AREA)
  • Laminated Bodies (AREA)
  • Aerials With Secondary Devices (AREA)
DE69618252T 1995-09-22 1996-09-17 Magnetischer Kompositartikel zur Unterdrückung von elektromagnetischen Interferenzen Expired - Lifetime DE69618252T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7244096A JPH0993034A (ja) 1995-09-22 1995-09-22 複合磁性体及びその製造方法ならびに電磁干渉抑制体

Publications (2)

Publication Number Publication Date
DE69618252D1 DE69618252D1 (de) 2002-01-31
DE69618252T2 true DE69618252T2 (de) 2002-08-22

Family

ID=17113698

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69618252T Expired - Lifetime DE69618252T2 (de) 1995-09-22 1996-09-17 Magnetischer Kompositartikel zur Unterdrückung von elektromagnetischen Interferenzen
DE69608933T Expired - Lifetime DE69608933T2 (de) 1995-09-22 1996-09-17 Magnetisches Kompositartikel zur Unterdrückung von elektromagnetischen Interferenzen

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69608933T Expired - Lifetime DE69608933T2 (de) 1995-09-22 1996-09-17 Magnetisches Kompositartikel zur Unterdrückung von elektromagnetischen Interferenzen

Country Status (9)

Country Link
US (1) US5827445A (de)
EP (2) EP0951023B1 (de)
JP (1) JPH0993034A (de)
KR (1) KR100247444B1 (de)
CN (1) CN1097270C (de)
DE (2) DE69618252T2 (de)
MY (1) MY115205A (de)
SG (1) SG48471A1 (de)
TW (1) TW304269B (de)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6972097B2 (en) * 1995-07-20 2005-12-06 Nec Tokin Corporation Composite magnetic material and electromagnetic interference suppressor member using the same
JPH0935927A (ja) * 1995-07-20 1997-02-07 Tokin Corp 複合磁性体及びそれを用いた電磁干渉抑制体
JP3608063B2 (ja) * 1996-08-23 2005-01-05 Ｎｅｃトーキン株式会社 Ｅｍｉ対策部品及びそれを備えた能動素子
JP3404618B2 (ja) * 1996-09-02 2003-05-12 エヌイーシートーキン株式会社 電磁干渉抑制体
KR20000064304A (ko) * 1996-09-03 2000-11-06 도낀 가부시끼가이샤 복합자성 시트의 제조방법
US6521140B2 (en) * 1996-09-06 2003-02-18 Nec Tokin Corp. Composite magnetic body and electromagnetic interference suppressing body using the same
JP3475386B2 (ja) * 1997-09-01 2003-12-08 Ｎｅｃトーキン株式会社 電磁干渉抑制体
JPH11112229A (ja) * 1997-10-07 1999-04-23 Tokin Corp 複合磁性体，その製造方法，及びそれを用いた電磁干渉抑制体
JPH11214912A (ja) * 1998-01-27 1999-08-06 Tokin Corp 指向性アンテナ
US6887412B1 (en) * 1999-09-28 2005-05-03 Nec Tokin Corporation Composite magnetic sheet and method of producing the same
JP2001126910A (ja) * 1999-10-25 2001-05-11 Tokin Corp 複合磁性体、複合磁性体シートおよびそれらの製造方法
US6586046B1 (en) 2000-01-26 2003-07-01 General Electric Company Fluidized bed apparatus and method for treatment of nonspherical, nonequiaxed particles
JP2001210510A (ja) * 2000-01-28 2001-08-03 Tokin Corp 軟磁性粉末及びそれを用いた複合磁性体
TW510141B (en) * 2000-04-17 2002-11-11 Tokin Corp High-frequency current suppressor capable of being readily attached to cable or the like and earphone system using the same
JP2001297905A (ja) * 2000-04-17 2001-10-26 Tokin Corp 高周波電流抑制体
GB0211443D0 (en) * 2002-05-18 2002-06-26 Qinetiq Ltd Microwave absorbent material
US20040041121A1 (en) * 2002-08-30 2004-03-04 Shigeyoshi Yoshida Magnetic loss material and method of producing the same
US6914183B2 (en) * 2002-09-25 2005-07-05 Sumitomo Electric Industries, Ltd. Board for printed wiring
US9490063B2 (en) 2003-02-26 2016-11-08 Analogic Corporation Shielded power coupling device
US8350655B2 (en) * 2003-02-26 2013-01-08 Analogic Corporation Shielded power coupling device
US9368272B2 (en) 2003-02-26 2016-06-14 Analogic Corporation Shielded power coupling device
US7868723B2 (en) * 2003-02-26 2011-01-11 Analogic Corporation Power coupling device
WO2004086837A1 (ja) 2003-03-25 2004-10-07 Shin-Etsu Polymer Co., Ltd. 電磁波ノイズ抑制体、電磁波ノイズ抑制機能付物品、およびそれらの製造方法
JP4010296B2 (ja) * 2003-11-20 2007-11-21 株式会社デンソー 軟磁性粉末材料の製造方法
CN100455178C (zh) 2004-02-24 2009-01-21 信越聚合物株式会社 电磁波噪声抑制体、具有电磁波噪声抑制功能的结构体、以及其制造方法
US8134084B2 (en) 2006-06-30 2012-03-13 Shin-Etsu Polymer Co., Ltd. Noise-suppressing wiring-member and printed wiring board
JP4692768B2 (ja) * 2006-12-08 2011-06-01 住友電気工業株式会社 軟磁性複合材料
CN101231707A (zh) * 2007-01-25 2008-07-30 3M创新有限公司 电磁屏蔽装置
KR101515693B1 (ko) 2009-12-15 2015-04-27 아사히 가세이 셍이 가부시키가이샤 노이즈 흡수 포백
JP2011129798A (ja) * 2009-12-21 2011-06-30 Mitsumi Electric Co Ltd 高周波用磁性材料、高周波デバイス及び磁性粒子
JP4692859B2 (ja) * 2010-08-19 2011-06-01 住友電気工業株式会社 リアクトル
DE102014215318A1 (de) * 2014-08-04 2016-02-04 Siemens Aktiengesellschaft Anisotrop weichmagnetisches Komposit-Material mit hoher Anisotropie der Permeabilität zur Unterdrückung von Querfluss und dessen Herstellung
US11229147B2 (en) 2015-02-06 2022-01-18 Laird Technologies, Inc. Thermally-conductive electromagnetic interference (EMI) absorbers with silicon carbide
US10287413B2 (en) 2016-12-19 2019-05-14 3M Innovative Properties Company Thermoplastic polymer composite containing soft, ferromagnetic particulate material and methods of making thereof
US10913834B2 (en) 2017-11-16 2021-02-09 3M Innovative Properties Company Polymer matrix composites comprising indicator particles and methods of making the same
WO2019097446A1 (en) 2017-11-16 2019-05-23 3M Innovative Properties Company Polymer matrix composites comprising functional particles and methods of making the same
CN111491991A (zh) 2017-11-16 2020-08-04 3M创新有限公司 制备聚合物基质复合材料的方法
US10836873B2 (en) 2017-11-16 2020-11-17 3M Innovative Properties Company Polymer matrix composites comprising thermally insulating particles and methods of making the same
US10927228B2 (en) 2017-11-16 2021-02-23 3M Innovative Properties Company Polymer matrix composites comprising intumescent particles and methods of making the same
US11756985B2 (en) 2017-11-16 2023-09-12 Georgia Tech Research Corporation Substrate-compatible inductors with magnetic layers
WO2019099603A1 (en) 2017-11-16 2019-05-23 3M Innovative Properties Company Polymer matrix composites comprising dielectric particles and methods of making the same
CN113840868A (zh) 2019-05-15 2021-12-24 3M创新有限公司 包含导热颗粒和磁性颗粒的(共)聚合物基质复合材料及其制备方法
KR20210010175A (ko) * 2019-07-19 2021-01-27 현대자동차주식회사 자기유변 탄성체

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1024647B (de) * 1954-11-24 1958-02-20 Deutsche Edelstahlwerke Ag Ferromagnetische Bestandteile enthaltender, magnetisch haftender, biegsamer Formkoerper
FR1152152A (fr) * 1956-03-20 1958-02-12 Thomson Houston Comp Francaise Matière anti-réflectrice absorbant les ondes hertziennes
US2873225A (en) * 1957-05-20 1959-02-10 Adams Edmond Magnetic flake core
JPS62221199A (ja) * 1986-03-24 1987-09-29 株式会社　リケン 磁気シ−ルド材
GB2232165A (en) * 1989-03-22 1990-12-05 Cookson Group Plc Magnetic compositions
US5352268A (en) * 1989-12-12 1994-10-04 Hitachi Metals, Ltd. Fe-Ni alloy fine powder of flat shape
US5207841A (en) * 1990-04-12 1993-05-04 Tdk Corporation Soft magnetic powder and magnetic shield composition
JPH04276002A (ja) * 1991-02-28 1992-10-01 Hitachi Metals Ltd 扁平状軟磁性Ｆｅ−Ｃｏ合金微粉末
DE4124458A1 (de) * 1991-07-24 1993-01-28 Degussa Emi-abschirmpigmente, verfahren zu deren herstellung und deren verwendung
JP3401650B2 (ja) * 1994-01-20 2003-04-28 エヌイーシートーキン株式会社 電磁波干渉抑制体
FI117224B (fi) * 1994-01-20 2006-07-31 Nec Tokin Corp Sähkömagneettinen häiriönpoistokappale, ja sitä soveltavat elektroninen laite ja hybridimikropiirielementti

Also Published As

Publication number Publication date
EP0764954A1 (de) 1997-03-26
EP0764954B1 (de) 2000-06-21
EP0951023A3 (de) 1999-11-03
KR970017717A (ko) 1997-04-30
EP0951023A2 (de) 1999-10-20
EP0951023B1 (de) 2001-12-19
DE69608933T2 (de) 2000-11-16
US5827445A (en) 1998-10-27
KR100247444B1 (ko) 2000-03-15
DE69618252D1 (de) 2002-01-31
JPH0993034A (ja) 1997-04-04
SG48471A1 (en) 1998-04-17
DE69608933D1 (de) 2000-07-27
CN1097270C (zh) 2002-12-25
CN1149747A (zh) 1997-05-14
TW304269B (de) 1997-05-01
MY115205A (en) 2003-04-30

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: NEC TOKIN CORP., SENDAI, MIYAGI, JP

8365 Fully valid after opposition proceedings