DE3374042D1 - Electro-magnetic wave absorbing material - Google Patents

Electro-magnetic wave absorbing material

Info

Publication number
DE3374042D1
DE3374042D1 DE8383103247T DE3374042T DE3374042D1 DE 3374042 D1 DE3374042 D1 DE 3374042D1 DE 8383103247 T DE8383103247 T DE 8383103247T DE 3374042 T DE3374042 T DE 3374042T DE 3374042 D1 DE3374042 D1 DE 3374042D1
Authority
DE
Germany
Prior art keywords
electro
absorbing material
wave absorbing
magnetic wave
magnetic
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
Application number
DE8383103247T
Other languages
English (en)
Inventor
Kenichi Hatakeyama
Tetsuji Inui
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.)
NEC Corp
Original Assignee
NEC 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=26393234&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3374042(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP5261082A external-priority patent/JPS58170100A/ja
Priority claimed from JP5617582A external-priority patent/JPS58173898A/ja
Application filed by NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE3374042D1 publication Critical patent/DE3374042D1/de
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H05K9/009—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/06—Elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H3/00—Camouflage, i.e. means or methods for concealment or disguise

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
DE8383103247T 1982-03-31 1983-03-31 Electro-magnetic wave absorbing material Expired DE3374042D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5261082A JPS58170100A (ja) 1982-03-31 1982-03-31 電波吸収材料
JP5617582A JPS58173898A (ja) 1982-04-05 1982-04-05 電波吸収体

Publications (1)

Publication Number Publication Date
DE3374042D1 true DE3374042D1 (en) 1987-11-12

Family

ID=26393234

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383103247T Expired DE3374042D1 (en) 1982-03-31 1983-03-31 Electro-magnetic wave absorbing material

Country Status (3)

Country Link
US (1) US4538151A (de)
EP (1) EP0090432B2 (de)
DE (1) DE3374042D1 (de)

Families Citing this family (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5920917A (ja) * 1982-07-26 1984-02-02 三菱電線工業株式会社 インタフエイス用バスケ−ブル装置
GB2196343B (en) * 1983-10-03 1988-09-14 Courtaulds Plc Microwave-absorbing fibres and filaments
US5399295A (en) * 1984-06-11 1995-03-21 The Dow Chemical Company EMI shielding composites
US5561428A (en) * 1985-02-12 1996-10-01 General Atomics Electromagnetic radiation absorber and method for the production thereof
US4689098A (en) * 1985-10-11 1987-08-25 Phillips Petroleum Company Molding composition
SE462099B (sv) * 1985-11-15 1990-05-07 Dow Chemical Co Emi avskaermningskompositmaterial
FR2689687B1 (fr) * 1985-12-30 1994-09-02 Poudres & Explosifs Ste Nale Procédé de fixation d'un élément absorbant les ondes électromagnétiques sur une paroi d'une structure ou infrastructure.
JPS62209805A (ja) * 1986-03-10 1987-09-16 Agency Of Ind Science & Technol Ｚｎ−２２Ａ１超塑性合金粉末を用いた複合磁性材料の成形方法
US4728554A (en) * 1986-05-05 1988-03-01 Hoechst Celanese Corporation Fiber structure and method for obtaining tuned response to high frequency electromagnetic radiation
US4725490A (en) * 1986-05-05 1988-02-16 Hoechst Celanese Corporation High magnetic permeability composites containing fibers with ferrite fill
DE3626460A1 (de) * 1986-08-05 1988-02-11 Lehmann & Voss & Co Kunststoffmischung mit elektromagnetischen abschirmeigenschaften
US5576710A (en) * 1986-11-25 1996-11-19 Chomerics, Inc. Electromagnetic energy absorber
US5325094A (en) * 1986-11-25 1994-06-28 Chomerics, Inc. Electromagnetic energy absorbing structure
US4833007A (en) * 1987-04-13 1989-05-23 E. I. Du Pont De Nemours And Company Microwave susceptor packaging material
US4732085A (en) * 1987-05-11 1988-03-22 Gaf Corporation Smoke generation apparatus and process using magnetic field
US5106437A (en) * 1987-11-25 1992-04-21 Minnesota Mining And Manufacturing Company Electromagnetic radiation suppression cover
US4814546A (en) * 1987-11-25 1989-03-21 Minnesota Mining And Manufacturing Company Electromagnetic radiation suppression cover
DE68928378T2 (de) * 1988-01-05 1998-05-20 Nippon Electric Co Absorber für elektromagnetische Strahlung
FR2655997B1 (fr) * 1988-01-18 1992-04-30 Commissariat Energie Atomique Enduit absorbant, son procede de fabrication et revetement obtenu a l'aide de cet enduit.
JPH01292792A (ja) * 1988-05-18 1989-11-27 Mitsubishi Mining & Cement Co Ltd 電子装置
JPH0228399A (ja) * 1988-07-18 1990-01-30 Shinwa Internatl Kk 電波吸収材及びその製造方法
WO1990004210A1 (en) * 1988-10-07 1990-04-19 The Trustees Of The University Of Pennsylvania Electromagnetically non-reflective materials
US5085931A (en) * 1989-01-26 1992-02-04 Minnesota Mining And Manufacturing Company Microwave absorber employing acicular magnetic metallic filaments
CA2005198A1 (en) * 1989-01-26 1990-07-26 Charles E. Boyer, Iii Microwave absorber employing acicular magnetic metallic filaments
US5275880A (en) * 1989-05-17 1994-01-04 Minnesota Mining And Manufacturing Company Microwave absorber for direct surface application
US5125992A (en) * 1989-10-02 1992-06-30 Brunswick Corp. Bulk rf absorber apparatus and method of making same
US5202688A (en) * 1989-10-02 1993-04-13 Brunswick Corporation Bulk RF absorber apparatus and method
US5189078A (en) * 1989-10-18 1993-02-23 Minnesota Mining And Manufacturing Company Microwave radiation absorbing adhesive
US5238975A (en) * 1989-10-18 1993-08-24 Minnesota Mining And Manufacturing Company Microwave radiation absorbing adhesive
US5186854A (en) * 1990-05-21 1993-02-16 The United States Of America As Represented By The Secretary Of The Navy Composites having high magnetic permeability and method of making
JPH04150098A (ja) * 1990-10-12 1992-05-22 Nec Corp 電波吸収体
KR930011548B1 (ko) * 1991-08-13 1993-12-10 한국과학기술연구원 적층형 전파흡수체
US5270364A (en) * 1991-09-24 1993-12-14 Chomerics, Inc. Corrosion resistant metallic fillers and compositions containing same
US5378879A (en) * 1993-04-20 1995-01-03 Raychem Corporation Induction heating of loaded materials
JP2826038B2 (ja) * 1993-04-28 1998-11-18 大塚サイエンス株式会社 電波吸収体およびその製造方法
BE1008923A5 (nl) * 1993-05-13 1996-10-01 Seyntex N V Anti-radarnetten.
DE9308355U1 (de) * 1993-06-03 1994-02-03 Terra Bohn GmbH, 88085 Langenargen Strahlenschutzvorrichtung
FI117224B (fi) * 1994-01-20 2006-07-31 Nec Tokin Corp Sähkömagneettinen häiriönpoistokappale, ja sitä soveltavat elektroninen laite ja hybridimikropiirielementti
JP2956875B2 (ja) * 1994-05-19 1999-10-04 矢崎総業株式会社 電磁遮蔽用成形材料
US5770304A (en) * 1994-07-11 1998-06-23 Nippon Paint Co., Ltd. Wide bandwidth electromagnetic wave absorbing material
US6117517A (en) * 1995-01-04 2000-09-12 Northrop Grumman Corporation Synthetic magnetodielectric with controlled off-normal TE and TM response
GB2308127A (en) * 1995-12-15 1997-06-18 Ams Polymers Radiation absorbing materials
TW345667B (en) 1996-09-09 1998-11-21 Tokiin Corp High thermal conductivity composite magnetic substance
DE19707585A1 (de) * 1997-02-26 1998-09-03 Bosch Gmbh Robert Gehäuse mit radarabsorbierenden Eigenschaften
AU8583598A (en) * 1997-07-23 1999-02-16 Cuming Microwave Corporation Radar absorber and method of manufacture
DE19907675A1 (de) * 1999-02-23 2000-09-14 Kreitmair Steck Wolfgang Kabelschirm aus Faserverbundwerkstoffen mit hohem Anteil an elektrisch leitfähigen Fasern zur elektromagnetischen Abschirmung
JP2001060790A (ja) * 1999-08-19 2001-03-06 Sony Corp 電波吸収体
AU2003276809A1 (en) * 2002-06-14 2003-12-31 Laird Technologies, Inc. Composite emi shield
US20040119552A1 (en) * 2002-12-20 2004-06-24 Com Dev Ltd. Electromagnetic termination with a ferrite absorber
EP1498445A1 (de) * 2003-07-18 2005-01-19 DSM IP Assets B.V. Wärmestabilisierte Formmasse
TWI357425B (en) * 2003-09-09 2012-02-01 Laird Technologies Inc Microwave-absorbing form-in-place paste
US7670651B2 (en) * 2004-06-04 2010-03-02 The United States Of America As Represented By The Secretary Of The Navy Waterborn coating containing microcylindrical conductors
US20060007034A1 (en) * 2004-07-07 2006-01-12 Wen-Jang Yen Composite radar absorption structure with a thin shell type and method for manufacturing the same
JP2007096269A (ja) * 2005-08-30 2007-04-12 Nisca Corp 近傍界電磁波吸収体
US20090015408A1 (en) * 2007-07-10 2009-01-15 Yoshinori Asai Handy-type wireless tag reader/writer
EP2959490A2 (de) * 2013-02-21 2015-12-30 3M Innovative Properties Company Polymerzusammensetzungen mit elektromagnetischer interferenzabschwächung
EP3670181B1 (de) 2018-12-20 2020-12-30 Trelleborg Retford Limited Kachel zur reduzierung einer radarwellenreflexion und verfahren zur herstellung einer kachel zur reduzierung einer radarwellenreflexion
CN110215946A (zh) * 2019-05-29 2019-09-10 西南大学 一种用于微波加热的新型金属试管装置
CN111234245A (zh) * 2020-01-15 2020-06-05 扬州大学 一种Ag纳米线/ZIF超薄纳米片复合材料、制备方法和应用
CN111683512A (zh) * 2020-06-12 2020-09-18 安徽理工大学 一种微波合成煤基碳/铁磁金属复合电磁吸收材料及方法
CN114346250B (zh) * 2021-12-31 2023-09-26 广东技术师范大学 一种金属-碳复合颗粒及其制备方法和应用

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB611742A (en) * 1945-10-15 1948-11-03 Herbert Oesterle Ross Improved electronic shields
US4173018A (en) * 1967-07-27 1979-10-30 Whittaker Corporation Anti-radar means and techniques
US3737903A (en) * 1970-07-06 1973-06-05 K Suetake Extremely thin, wave absorptive wall
US4051097A (en) * 1972-01-31 1977-09-27 The Bendix Corporation Carbon metallic friction composition
GB1407999A (en) * 1972-12-12 1975-10-01 Du Pont Compositions containing ferromagnetic particles and non-ferro magnetic aluminium particles in an elastic material
GB1437248A (en) * 1973-11-09 1976-05-26 Ciba Geigy Ag Antistatic surfaces
US4104900A (en) * 1977-05-02 1978-08-08 General Motors Corporation Process for making metal fibers
JPS54116801A (en) * 1978-03-02 1979-09-11 Kansai Paint Co Ltd Radio wave absorbing corrosionnproof tape
JPS5536987A (en) * 1978-09-07 1980-03-14 Yokohama Rubber Co Ltd Radio wave absorber composition
JPS5599800A (en) * 1979-01-26 1980-07-30 Sadaaki Takagi Electromagnetic wave absorber and method of fabricating same
DE2934209C2 (de) * 1979-05-28 1982-04-01 Akebono Brake Industry Co. Ltd., Tokyo Reibungsmaterial
JPS5814457B2 (ja) * 1980-10-09 1983-03-19 福田金属箔粉工業株式会社 電磁波遮蔽用導電性プラスチック組成物
JPS5865754A (ja) * 1981-10-16 1983-04-19 Nippon Kayaku Co Ltd フルオラン化合物及びそれを用いる発色性感熱又は感圧記録シ−ト
GB2119094A (en) * 1982-03-17 1983-11-09 British Gas Corp Apparatus for measuring defects in insulation coatings

Also Published As

Publication number Publication date
US4538151A (en) 1985-08-27
EP0090432A2 (de) 1983-10-05
EP0090432B1 (de) 1987-10-07
EP0090432A3 (en) 1984-05-23
EP0090432B2 (de) 1993-03-03

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings
8339 Ceased/non-payment of the annual fee