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Patent Searching and Data


Matches 351 - 400 out of 3,101

Document Document Title
WO/2002/043459A1
A radio-wave absorber having a high absorption power of high-frequency radio wave and a thin shape. The radio-wave absorber comprises at least one magnetic layer that contains a magnetic material having a fine structure and having a part...  
WO/2002/043460A1
A radio wave absorber which has a high absorbing performance for a high-frequency electromagnetic wave and is reduced in thickness, and which is constructed so that a conductor is fixed to a surface opposite to an electromagnetic-wave in...  
WO/2002/040799A1
A shielding material comprises at least one basic building material and at least one shielding component capable of reflecting or absorbing electromagnetic radiation. The shielding material optionally includes a hydraulically settable bi...  
WO2001059873A3
An antenna unit for use in a mobile telecommunications network, which is capable of transmitting and receiving radio signals from the inside of buildings to and from mobile terminals operating in the network. The antenna also prevents th...  
WO2001089027A3
Electromagnetic radiating structures suitable for use as antennas or in electromagnetic field test facilities. An electromagnetic field test facility is a test enclosure used for observing the behaviour of equipment in the presence of st...  
WO2002016257A3
The present invention relates to new compositions of matter and articles of manufacture comprising SWNTs as nanometer scale conducting rods dispersed in an electrically-insulating matrix. These compositions of matter have novel and usefu...  
WO2001095347A3
Coated ferromagnetic particles are provided which are useful as radar absorbing material (RAM). In particular, ferromagnetic particles such as iron, carbonyl iron, cobalt, nickel, and alloys thereof are provided that have been coated wit...  
WO/2002/025668A1
The invention relates to radio engineering, in particular to means for protecting against electromagnetic radiation and can be used for reducing a level of radiation injurious for health in radiotelephones, computers and other devices fo...  
WO/2002/021633A1
The present invention relates to a structure of an antenna and its shielding structure for a mobile phone which may significantly reduce the hazardous electromagnetic wave transmitted to the user's body. The present invention arranges a ...  
WO/2002/016257A2
The present invention relates to new compositions of matter and articles of manufacture comprising SWNTs as nanometer scale conducting rods dispersed in an electrically-insulating matrix. These compositions of matter have novel and usefu...  
WO/2002/013311A1
The invention relates to a method for effectively decreasing electromagnetic radiation by means of active absorbing material in a broad frequency band, preferably from 100 MHz - 10 GHz, wherein said material combines the desired shieldin...  
WO2001049984A3
A method for reducing the acoustical noise, sonar cross-section or radar cross-section of an object, in particular low frequency sonar noise, is provided comprising contacting the object with a polymer that has been optionally modified t...  
WO/2002/005291A2
The invention relates to an optical component for effecting frequency-selective reflection in the gigahertz and terahertz frequency ranges and for effecting wave permeability. The inventive component comprises: at least one first layer (...  
WO2001069718A8
A grating comprising a plurality of substantially parallel members having a conducting surface of depth L, separated by a dielectric layer gap, and having of pitch lambda g and where L>16 lambda g. The members are preferably metallic or ...  
WO/2001/099296A1
The invention relates to an electrical or electronic device (1), especially a mobile telephone with a visual display unit, which emits electromagnetic fields. In order to absorb, to a large extent, electromagnetic fields and to prevent t...  
WO/2001/095347A2
Coated ferromagnetic particles are provided which are useful as radar absorbing material (RAM). In particular, ferromagnetic particles such as iron, carbonyl iron, cobalt, nickel, and alloys thereof are provided that have been coated wit...  
WO/2001/093651A1
A composition which is to be superposed on a reflective plate to constitute an electric-wave absorber. The composition comprises a base and conductive titanium oxide incorporated therein. The base may be a thermoplastic resin, thermosett...  
WO/2001/089027A2
Electromagnetic radiating structures suitable for use as antennas or in electromagnetic field test facilities. An electromagnetic field test facility is a test enclosure used for observing the behaviour of equipment in the presence of st...  
WO/2001/084672A1
A radiation absorber which is placed on the irradiated side of a conductive surface (L) whose surface resistance < 0.1 $g(V)/square. The radiation absorber comprises three layers, which from said conductive surface outwards consist of a ...  
WO/2001/069718A1
A grating comprising a plurality of substantially parallel members having a conducting surface of depth L, separated by a dielectric layer gap, and having of pitch $g(l)¿g? and where L>16$g(l)¿g?. The members are preferably metallic or...  
WO/2001/067553A1
Microstructured materials which can be tuned to a particular range of r.f. frequencies to display particular magnetic permeabilities have been proposed. A typical material is made of an array of capacitive elements e.g. spirals or rolls ...  
WO/2001/059873A2
An antenna unit for use in a mobile telecommunications network, which is capable of transmitting and receiving radio signals from the inside of buildings to and from mobile terminals operating in the network. The antenna also prevents th...  
WO/2001/057953A1
System and method for improving the interference resistance of a radio frequency, RF, antenna system through passive prescreening of the RF energy incident upon the antenna. The invention physically partitions the RF environment into two...  
WO/2001/052355A1
The inventive radioabsorbing coating is made of a radioabsorbing material comprising the following: a synthetic glue 'Elaton' based on latex as plastic binder, and powdered ferrite or carbonyl iron as magnetic extender. The mixing ratio ...  
WO2000033414A9
A microwave device operating at a selected frequency band or group of selected frequency bands of interest includes a resonant bulk material having one or more conductivity bandwidths corresponding to the selected frequency band or group...  
WO/2001/049984A2
A method for reducing the acoustical noise, sonar cross-section or radar cross-section of an object, in particular low frequency sonar noise, is provided comprising contacting the object with a polymer that has been optionally modified t...  
WO/2001/050545A1
Disclosed is an antenna having an electromagnetic radiation blocking function and a fabrication method thereof. A helical line is formed by winding a copper wire on a helical groove formed on a core, or using a spring instead of the core...  
WO/2001/044839A1
A surface capable of supporting surface charge oscillations and exhibiting a profiled grating, said profile comprising at least two superposed periodic profiles. The surface has applications as radar absorber and authentication devices. ...  
WO/2001/041255A1
There is disclosed a microwave absorbing structure which comprises a non-conductive matrix within which are embedded a plurality of spatially-separated ferro- or ferri-magnetic particles, each of which particles has a largest dimension n...  
WO/2001/037440A1
The invention relates to a holder for a stone (2) for providing protection from the electromagnetic radiation from electronic devices. The inventive holder has a fixing device for fixing to another object, especially to a device that pro...  
WO/2001/029523A1
An apparatus and a method for determining the liquid (1) level in a tank (2) by means of a radar level measuring device (6), which transmits microwaves downwards to the surface of the liquid (7) through a waveguide (5), in the form of a ...  
WO/2001/029850A1
A composite magnetic body 1, comprising a soft magnetic powder (2) and a binding agent (3), in which the specific surface area of the soft magnetic powder (2) is 0.1-3 m?2¿/g. The surface state of the soft magnetic powder contained in t...  
WO/2001/029851A1
A composite magnetic body is obtained without the use of halogen-based or halogen-containing materials, such as, halogen-based binding agent of halogen-based resins or elastomers, and bromine-based fire retardants. The composite magnetic...  
WO/2001/027869A1
A communication device wherein the electric circuits other than the antenna are enclosed with a radio wave shield material for cutting off a radio wave, a radio wave absorbing material for attenuating a radio wave in a predetermined freq...  
WO/2001/015274A1
A radiation absorber comprising a substrate having free charges capable of being driven to form resonance charge density oscillators and a dielectric layer coated onto said surface wherein the dielectric layer has a textured/patterned su...  
WO/2001/001519A1
A directional antenna, on a periphery or one side of which is provided an electromagnetic interference suppressor (3) composed of the magnetic compound that contains oxide-coated magnetically soft powder. This antenna is suitable for a s...  
WO2000033414A3
A microwave device operating at a selected frequency band or group of selected frequency bands of interest includes a resonant bulk material having one or more conductivity bandwidths corresponding to the selected frequency band or group...  
WO/2000/055566A1
The invention relates to novel camouflage means for the camouflage of objects having a low or increased temperature, whereby said means can be used in a universal manner. A camouflage layer is preferably provided for the visible spectrum...  
WO/2000/051200A1
An antenna structure including a ground plane (12) that provides a good front to back ratio while maintaining a small size and which can mechanically be made to fit into tight areas. The antenna structure may be a GPS patch antenna (10),...  
WO2000013965A9
A method of camouflaging an object which emits infrared radiation by forming a binder (30) upon a substrate (S) wherein microcapsules which absorb infrared radiation are (10) are submersed within the binder.  
WO/2000/041270A1
A structure (2) which exhibits magnetic properties when it receives electromagnetic radiation (20) is formed from an array of capacitive elements (4) each of which is smaller, and preferably much smaller, than the wavelength of the radia...  
WO/2000/033414A2
A microwave device operating at a selected frequency band or group of selected frequency bands of interest includes a resonant bulk material having one or more conductivity bandwidths corresponding to the selected frequency band or group...  
WO2000013965A3
A method of camouflaging an object which emits infrared radiation by forming a binder (30) upon a substrate (S) wherein microcapsules which absorb infrared radiation are (10) are submersed within the binder.  
WO/2000/013965A2
A method of camouflaging an object which emits infrared radiation by forming a binder (30) upon a substrate (S) wherein microcapsules which absorb infrared radiation are (10) are submersed within the binder.  
WO/1999/065109A1
A device (1) for discharging an absorber element (2) for electromagnetic radiation generated by electrical or electronic members, such as an electronic processor, a portable telephone, a watch or the like, said absorber element (2) compr...  
WO/1999/041962A1
A radio wave absorber is simply, quickly and stably attached. A method and structure for attaching a radio wave absorber is characterized in that a plurality of ferrite plates (4) are jointed to a shield plate (2) provided on a ceiling, ...  
WO/1999/041961A1
A method for attaching a radio wave absorber readily and stably in a short time, characterized by joining panels (3) which have respectively a plurality of ferrite plates (4) joined to the surface of the panel (3) to a shielding plate (2...  
WO/1999/032740A1
Disclosed is a facing panel (1) for the façade of a building wall, comprising a resistive coating (6) arranged in the area of the facing panel (1). In order to improve such a facing panel, said panel (1) consists of a front (2) and a re...  
WO1999005752A3
An absorber includes a plurality of shredded foam particles and a plurality of fiber whiskers. The fiber whiskers are interspersed among, and attach to the shredded foam particles to create a foam-fiber mixture. A curable adhesive is add...  
WO/1999/027612A1
The invention relates to a method for producing a radar reflection diminishing structural component comprised of a core element. The structural component is preferably comprised of a honeycomb core or a substrate especially for a two-dim...  

Matches 351 - 400 out of 3,101