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GB2379331B - Electromagnetic energy absorbing material - Google Patents

Electromagnetic energy absorbing material

Info

Publication number
GB2379331B
GB2379331B GB0107785A GB0107785A GB2379331B GB 2379331 B GB2379331 B GB 2379331B GB 0107785 A GB0107785 A GB 0107785A GB 0107785 A GB0107785 A GB 0107785A GB 2379331 B GB2379331 B GB 2379331B
Authority
GB
United Kingdom
Prior art keywords
absorbing material
electromagnetic energy
energy absorbing
electromagnetic
energy
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 - Fee Related
Application number
GB0107785A
Other versions
GB0107785D0 (en
GB2379331A (en
Inventor
Hubert Kolodziej
Adrzej Vogt
Adrzej E Sowa
Andrzej Cichy
Stanislaw Strzelecki
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.)
EMCCO RES Ltd
Uniwersytet Wroclawski
Original Assignee
EMCCO RES Ltd
Uniwersytet Wroclawski
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
Application filed by EMCCO RES Ltd, Uniwersytet Wroclawski filed Critical EMCCO RES Ltd
Priority to GB0107785A priority Critical patent/GB2379331B/en
Priority to PCT/GB2002/001174 priority patent/WO2002080201A1/en
Publication of GB0107785D0 publication Critical patent/GB0107785D0/en
Publication of GB2379331A publication Critical patent/GB2379331A/en
Application granted granted Critical
Publication of GB2379331B publication Critical patent/GB2379331B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H05K9/0001—Rooms or chambers
    • H05K9/0003—Shielded walls, floors, ceilings, e.g. wallpaper, wall panel, electro-conductive plaster, concrete, cement, mortar
    • 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
    • H01F1/22—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 pressed, sintered, or bound together
    • H01F1/24—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 pressed, sintered, or bound together the particles being insulated
    • 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
    • H01F1/34—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 non-metallic substances, e.g. ferrites
    • H01F1/36—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 non-metallic substances, e.g. ferrites in the form of particles
    • H01F1/37—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 non-metallic substances, e.g. ferrites in the form of particles in a bonding agent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/004—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using non-directional dissipative particles, e.g. ferrite powders

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Hard Magnetic Materials (AREA)
GB0107785A 2001-03-28 2001-03-28 Electromagnetic energy absorbing material Expired - Fee Related GB2379331B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0107785A GB2379331B (en) 2001-03-28 2001-03-28 Electromagnetic energy absorbing material
PCT/GB2002/001174 WO2002080201A1 (en) 2001-03-28 2002-03-26 Electromagnetic energy absorbing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0107785A GB2379331B (en) 2001-03-28 2001-03-28 Electromagnetic energy absorbing material

Publications (3)

Publication Number Publication Date
GB0107785D0 GB0107785D0 (en) 2002-03-27
GB2379331A GB2379331A (en) 2003-03-05
GB2379331B true GB2379331B (en) 2005-04-13

Family

ID=9911767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0107785A Expired - Fee Related GB2379331B (en) 2001-03-28 2001-03-28 Electromagnetic energy absorbing material

Country Status (2)

Country Link
GB (1) GB2379331B (en)
WO (1) WO2002080201A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4877513B2 (en) * 2007-03-14 2012-02-15 戸田工業株式会社 Ferrite particle powder for bonded magnet, resin composition for bonded magnet, and molded body using them
US9203369B2 (en) * 2012-10-01 2015-12-01 Octoscope Inc. Composite electromagnetic isolation filters
WO2015063681A1 (en) 2013-10-28 2015-05-07 Uniwersytet Wroclawski Coating for absorbing energy, especially the energy of electromagnetic and mechanical waves, and its use
RU2626073C1 (en) * 2016-10-03 2017-07-21 Акционерное общество "Центральное конструкторское бюро автоматики" Super-wide band broadcasting coating
DE102017210941A1 (en) * 2017-06-28 2019-01-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. A method of manufacturing a soft magnetic composite and soft magnetic composite
US11774652B2 (en) 2022-01-14 2023-10-03 Stealth Labs, LLC Omni-spectral camouflage and thermoregulation composition
US11692796B1 (en) 2022-09-15 2023-07-04 Stealth Labs, LLC Omni-spectral thermal camouflage, signature mitigation and insulation apparatus, composition and system

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1045432A (en) * 1963-02-21 1966-10-12 Chevron Res Improvements in and relating to the manufacture of ferrimagnetic materials
JPS54121046A (en) * 1978-03-13 1979-09-19 Tdk Corp Electric wave absorbing material
US4414339A (en) * 1982-03-15 1983-11-08 The Dow Chemical Company Low density, electromagnetic radiation absorption composition
EP0229014A2 (en) * 1986-01-09 1987-07-15 Sony Corporation Magnetic recording medium
GB2196343A (en) * 1983-10-03 1988-04-27 Courtaulds Plc Microwave-absorbing fibres and filaments
US4810401A (en) * 1986-06-12 1989-03-07 Basf Aktiengesellschaft Superparamagnetic solid particles
EP0344838A2 (en) * 1988-06-03 1989-12-06 Shell Internationale Researchmaatschappij B.V. Composite materials suitable for magnetic and electronic shielding as well as for permanent magnets
US4889697A (en) * 1987-12-10 1989-12-26 Nkk Corporation Method of refining ferrous ion-containing acid solution
US5063105A (en) * 1989-01-17 1991-11-05 Fuji Photo Film Co., Ltd. Magnetic recording medium in which certain physical properties of the magnetic layer and the backcoat layer are specified
EP0468887A1 (en) * 1990-07-27 1992-01-29 Ferdy Mayer High frequency broadband absorption structures
US5954991A (en) * 1997-04-04 1999-09-21 Hong; Chin-Yih Rex Ordered structures in homogeneous magnetic fluid thin films and method of preparation
JP2001081327A (en) * 1999-09-10 2001-03-27 Tokin Corp Composite magnetic body and electromagnetic interference suppressor using the same

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1045432A (en) * 1963-02-21 1966-10-12 Chevron Res Improvements in and relating to the manufacture of ferrimagnetic materials
JPS54121046A (en) * 1978-03-13 1979-09-19 Tdk Corp Electric wave absorbing material
US4414339A (en) * 1982-03-15 1983-11-08 The Dow Chemical Company Low density, electromagnetic radiation absorption composition
GB2196343A (en) * 1983-10-03 1988-04-27 Courtaulds Plc Microwave-absorbing fibres and filaments
EP0229014A2 (en) * 1986-01-09 1987-07-15 Sony Corporation Magnetic recording medium
US4810401A (en) * 1986-06-12 1989-03-07 Basf Aktiengesellschaft Superparamagnetic solid particles
US4889697A (en) * 1987-12-10 1989-12-26 Nkk Corporation Method of refining ferrous ion-containing acid solution
EP0344838A2 (en) * 1988-06-03 1989-12-06 Shell Internationale Researchmaatschappij B.V. Composite materials suitable for magnetic and electronic shielding as well as for permanent magnets
US5063105A (en) * 1989-01-17 1991-11-05 Fuji Photo Film Co., Ltd. Magnetic recording medium in which certain physical properties of the magnetic layer and the backcoat layer are specified
EP0468887A1 (en) * 1990-07-27 1992-01-29 Ferdy Mayer High frequency broadband absorption structures
US5954991A (en) * 1997-04-04 1999-09-21 Hong; Chin-Yih Rex Ordered structures in homogeneous magnetic fluid thin films and method of preparation
JP2001081327A (en) * 1999-09-10 2001-03-27 Tokin Corp Composite magnetic body and electromagnetic interference suppressor using the same

Also Published As

Publication number Publication date
GB0107785D0 (en) 2002-03-27
WO2002080201A1 (en) 2002-10-10
GB2379331A (en) 2003-03-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20060328

728V Application for restoration filed (sect. 28/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
S28 Restoration of ceased patents (sect. 28/pat. act 1977)

Free format text: RESTORATION ALLOWED

Effective date: 20090126

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100328

S28 Restoration of ceased patents (sect. 28/pat. act 1977)

Free format text: APPLICATION FILED

S28 Restoration of ceased patents (sect. 28/pat. act 1977)

Free format text: RESTORATION ALLOWED

Effective date: 20110825

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20120328