Patents for H01Q 17 - Devices for absorbing waves radiated from an aerial; Combinations of such devices with active aerial elements or systems (2,636) |
---|
06/23/1992 | CA1304155C Lens/polarizer/radome |
06/09/1992 | US5121122 Facade construction for high structures |
06/09/1992 | US5120351 Sintering a magnetic mixture containing iron oxide, crushing, granulating, mixing with metallic particles and molding |
05/26/1992 | US5117229 Electromagnetic wave absorber |
05/20/1992 | EP0485635A1 Body for absorbing electromagnetic wave |
05/14/1992 | DE4035793A1 Dielectric array aerial for satellites, aircraft etc. - has dielectric radiators for reducing element number to min |
05/14/1992 | DE4035460A1 Large surface, sandwiched sound insulating wall - has extra material layer on side exposed to impingement for narrow band suppression |
05/12/1992 | US5113190 Device for reducing electromagnetic leakage radiation in the vicinity of radiation systems |
05/05/1992 | US5110651 Dielectric or magnetic anisotropy layers, laminated composite material incorporating said layers and their production process |
04/15/1992 | EP0466839A4 Electromagnetic wave attenuating and deicing structure |
04/08/1992 | EP0479438A2 Electromagnetic radiation absorbing material employing doubly layered particles |
04/07/1992 | US5103231 Electromagnetic wave absorber |
03/24/1992 | US5099244 Support pylon for radar cross-section model testing |
03/24/1992 | US5099242 Novel shielding, reflection and scattering control using chiral materials |
03/17/1992 | US5096551 Metallized tubule-based artificial dielectric |
03/10/1992 | US5095311 Electromagnetic wave absorbing element |
03/10/1992 | US5094907 Laminate, silicon-containing fiber, fiber of silicon, carbon, oxygen and titanium or zircnium from a polymetallocarbosilane |
03/04/1992 | EP0473515A1 Method for making a absorbing shield based on electronic conductive polymer |
03/04/1992 | EP0473510A1 Vapor phase method for making a shield based on conductive polymer and shield obtained by this method |
03/03/1992 | USH1034 Millimeter wave tracking radar antenna with variable azimuth pattern |
02/27/1992 | DE4026726A1 Transparent cover with enhanced absorption for specific wavelength - comprising substrate pref. of polymer, pref. indium-tin oxide semiconductor layers and spacer layer |
02/20/1992 | WO1992002973A1 Building components |
02/13/1992 | DE4024262A1 Radar screening device for aircraft - uses abutting triangles of screening film along both sides of sharply tapered edge |
02/11/1992 | CA1295541C Microwave-absorptive composite |
02/04/1992 | US5085931 Insulating microwave radiation absorber of polycrystalline magnetic metallic filaments dispersed in a dielectric binder |
01/29/1992 | EP0468887A1 High frequency broadband absorption structures |
01/28/1992 | US5084705 Facade construction in high rise structures |
01/22/1992 | EP0466839A1 Electromagnetic wave attenuating and deicing structure. |
01/21/1992 | US5083128 Low observability aperture design for expendable countermeasures devices |
01/21/1992 | US5083127 Thermal barrier facade construction of high rise structures and a process for fabrication of a thermal barrier |
01/21/1992 | CA1294677C Composite magnetic material and its production process |
01/14/1992 | US5081465 Spatially selective device for the absorption of electromagnetic waves, for a microwave lens |
01/14/1992 | US5081455 Electromagnetic wave absorber |
01/14/1992 | US5080165 Protective tarpaulin |
12/31/1991 | US5077556 Canopy for screening objects |
12/26/1991 | WO1991020179A1 Body for absorbing electromagnetic wave |
12/03/1991 | USH1002 Microwave absorbing material |
12/03/1991 | US5070339 Tapered-element array antenna with plural octave bandwidth |
11/27/1991 | EP0413690A4 Infrared signature control mechanism |
11/14/1991 | DE4014864A1 Protective screening against radiation from earth magnetic field - uses electronically controlled magnetic coil with core e.g. on floor of building |
11/13/1991 | EP0456554A2 Electrical conducting element and producing method |
11/07/1991 | CA2041823A1 Electrical conductor and manufacturing process thereof |
11/05/1991 | US5063384 Aircraft construction |
10/30/1991 | EP0454032A1 Absorber |
10/24/1991 | DE4012783A1 Multi-layer absorber for electromagnetic radiation e.g. for satellite - uses dielectric crystal layers with different crystal types or sizes |
10/24/1991 | DE4012672A1 Surface resistor for electromagnetic esp. radar wave absorber - contg. fire extinguishing and/or fire retardant substance to give incombustible absorber |
10/23/1991 | EP0318510B1 Web material for camouflage against electromagnetic radiation |
10/16/1991 | CN1055448A Microwave antenna unit |
10/15/1991 | US5056817 Temperature-rise limiting automobile bra |
10/02/1991 | EP0449107A2 Microwave antenna unit |
10/01/1991 | US5053786 Broadband directional antenna |
10/01/1991 | US5053712 Method for comparing the quality of rf absorbers |
09/19/1991 | DE4008660A1 Window glass system for high buildings - has double outer skin with layer of radar absorbing material and inner panel |
09/19/1991 | DE4007986C1 Aircraft structure with cavities - filled with material absorbing or reflecting radar vanes for camouflage or imaging |
09/18/1991 | EP0446408A1 Wall element minimizing radar reflections |
09/17/1991 | US5049893 Microwave energy distributor capable of radiating directly |
09/10/1991 | US5047296 Composite magnetic material and its production process |
09/05/1991 | DE4006352A1 Radar absorber for aircraft or spacecraft - has dielectric properties variable using alternate high and low conductivity layers |
08/29/1991 | DE4005676A1 Radar wave absorber for building - uses ceramic plates attached to building wall with directly attached reflective layer |
08/28/1991 | EP0443564A2 Absorber for electromagnetic waves |
08/22/1991 | WO1991012173A1 Electromagnetic wave attenuating and deicing structure |
08/22/1991 | DE4005297A1 Electromagnetic wave screen for ventilation ducts - has housing with perforated bottom, with tubes fitting into bottom perforations |
08/14/1991 | DE4003908A1 Highly-filled high-temp. polymers for electromagnetic screening - contain aromatic polyether-sulphone, polyether-ketone, polyimide etc., and above 70 wt. per cent metal-ferrite, -titanate or -zirconate |
07/31/1991 | EP0439337A2 Broad-band wave absorber |
07/30/1991 | US5036211 Infrared signature control mechanism |
07/02/1991 | US5028928 Ultra-stable, stressed-skin inflatable target support systems |
06/26/1991 | EP0434374A2 Low noise dual polarization electro-magnetic power reception and conversion system |
06/19/1991 | EP0432426A2 Thin layer absorber |
06/13/1991 | WO1991008576A1 Composition for the manufacture of a material with dielectric or pyroelectric properties, and process for the manufacture of this material |
06/12/1991 | EP0432034A1 Device for spatially selective absorption of electro-magnetic waves for an ultra-high frequency lens |
05/23/1991 | DE3938238A1 Attenuating absorber for electromagnetic waves - has stretched conductor mounted parallel to surface which reflects EM waves on electrically insulated substrate |
05/15/1991 | CN1051320A Prepn. method of complex superfine metal and its oxide wave-absorbing agent |
05/14/1991 | US5016185 Electromagnetic pyramidal cone absorber with improved low frequency design |
05/14/1991 | US5016015 Aircraft construction |
05/08/1991 | EP0426566A1 Multifocal receiving antenna with one single pointing direction for reception from several satellites |
05/07/1991 | US5014070 Radar camouflage material |
05/07/1991 | US5014060 Aircraft construction |
05/02/1991 | WO1991005979A1 Polyaniline compositions, process for their preparation and uses thereof |
05/02/1991 | EP0425350A1 Layers with magnetic or dielectric anisotropy, stratified composite material comprising these layers and their process of manufacture |
05/02/1991 | EP0425262A2 Absorbers |
05/01/1991 | WO1991006988A1 Multifocal receiving antenna with a single plotting direction for several satellites |
05/01/1991 | CA2044586A1 Antenne de reception multifocale a direction de pointage unique pour plusieurs satellites |
04/24/1991 | EP0424132A2 Microwave radiation absorbing adhesive |
04/24/1991 | CA2028243A1 Dielectric or magnetic anisotropy layers, laminated composite material incorporating said layers and their production process |
04/19/1991 | CA2024923A1 Microwave radiation absorbing adhesive |
04/18/1991 | WO1991005376A1 Bulk rf absorber apparatus and method |
04/11/1991 | DE3732779A1 Camouflage material for radar, infrared and millimetre wave detection - comprises mixt. of pulverised semiconductors and ferrite(s), embedded in neutral material e.g. resin |
04/03/1991 | EP0420513A1 Microwave-absorbing material |
03/26/1991 | US5003311 Fiber composite with layers matched to peak radar wave attenuation |
03/21/1991 | DE4023750A1 Anti-stealth radar location - using plate lens of plastic or pigmented plastic spaced from antenna to give virtual gain |
02/27/1991 | EP0414613A2 Method of making a surface element for absorbing electromagnetic waves |
02/27/1991 | EP0413690A1 Infrared signature control mechanism |
02/21/1991 | DE3927035A1 Ventilator and venting system for absorption rooms - has absorber channel between air inlet and outlet apertures, and supply and discharge lines for EM wave attenuation |
02/21/1991 | DE3730435C1 Laminated heatable radar absorber - has electrically-conducting mutually isolated heating layer surface elements |
02/07/1991 | DE3920110A1 Radome or radar absorber with adjustable transparency - has photosensitive layer with inside light source controlling EM state from reflection to transparency |
02/06/1991 | EP0411198A1 Absorber for electromagnetic and acoustic waves |
01/31/1991 | DE3925247A1 Defined field strengths absorber - uses two coupled metal cones with internal conductor and defined EM field |
01/29/1991 | US4989006 Microwave absorption system |
01/09/1991 | EP0407258A1 Ultrahigh frequency energy distributor radiating directly |
01/02/1991 | EP0405077A1 Façade cover for rising structures |