Patents for H01Q 17 - Devices for absorbing waves radiated from an aerial; Combinations of such devices with active aerial elements or systems (2,636) |
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07/05/1994 | US5326414 Polymer support with conductor paths and polymer covers, fixing cover to support after coating with layer |
06/28/1994 | US5325094 Electromagnetic energy absorbing structure |
06/28/1994 | US5324887 Patterned ink on interior surface of lid of microwave housing with carbon or iron-containing particles |
06/23/1994 | WO1994013878A1 Radar attenuating textiles |
06/23/1994 | CA2150472A1 Radar attenuating textiles |
06/21/1994 | US5323160 Laminated electromagnetic wave absorber |
06/08/1994 | EP0600387A1 Wideband wave absorber |
05/31/1994 | US5317328 Horn reflector antenna with absorber lined conical feed |
05/17/1994 | US5312678 A structure for absorbing and/or reflecting radiation, e.g. electromagnetic, comprising a radar-absorber and a layer of nonflammable fluorinated or nonfluorinated carbon fibers |
05/10/1994 | US5311199 Honeycomb cross-polarized load |
05/10/1994 | US5310598 Radio wave absorbing material |
05/03/1994 | US5309167 Multifocal receiving antenna with a single aiming direction for several satellites |
04/19/1994 | US5304750 Absorber for electromagnetic and acoustic waves |
03/31/1994 | DE4231962A1 Microwave-absorbing component for shielding applications |
03/29/1994 | US5298903 Synthetic dielectric material for broadband-selective absorption and reflection |
03/22/1994 | US5296859 Broadband wave absorption apparatus |
02/24/1994 | DE4317884A1 Neutralisation or screening device for electrical or electromagnetic radiation field - has container filled with mineral material, e.g rose quartz providing screening effect |
02/23/1994 | EP0583557A1 Window glazing |
02/09/1994 | EP0582292A1 Prefabricated absorber element |
01/20/1994 | DE4223177A1 Material used to absorb and shield electromagnetic waves - comprising finely divided, electrically nonconducting solid and a finely divided electrically conducting solid |
01/11/1994 | US5278562 Method and apparatus using photoresistive materials as switchable EMI barriers and shielding |
01/04/1994 | US5276448 Broad-band wave absorber |
01/04/1994 | US5276447 Radar echo reduction device |
01/04/1994 | US5275880 Electrically conductive radiation reflecting layer |
12/23/1993 | WO1993025270A1 Device for protection against the biological effects of electromagnetic non-ionising radiations, particularly those emitted by vdu equipment |
12/22/1993 | EP0574427A1 Component for the absorption of electromagnetic waves, and the use of such a component |
12/16/1993 | DE4219582A1 Directive antenna with absorbent region around edge of reflector - has triangular slots or holes leading into absorbent cavity resonator formed by two paraboloids on common axis |
12/09/1993 | WO1993024307A1 Method for making a material with artificial dielectric constant |
12/09/1993 | CA2136109A1 Method for making a material with artificial dielectric constant |
11/25/1993 | WO1993023893A1 Electromagnetic energy absorbing structure |
11/25/1993 | WO1993023892A1 Structurally resonating absorption device for the reduction of radar reflections |
11/25/1993 | WO1993023222A1 Ultraviolet protective fabric |
11/25/1993 | DE4216837A1 Radar camouflage for roll-stabilised slow-flying missile - comprises strips and narrow wedges of absorbent material in conjunction with wire grid covering nose only |
11/04/1993 | DE4209730A1 EM fields and radiation screening arrangement - contains electrically conducting material on flexible carrier |
10/28/1993 | DE3938299A1 Struktur zur Absorption von elektromagnetischen Wellen Structure for the absorption of electromagnetic waves, |
10/13/1993 | EP0565464A1 Method for damping electromagnetic waves, especially in a Faraday cage |
10/07/1993 | DE4211061A1 Thermoplastic material with improved heat stability and cracking resistance - comprises aromatic polycarbonate(s), polyamide(s), graft copolymer contg. rubber elastomer and substd. styrene, polymeric cpd. contg. acrylate(s) and filler |
10/05/1993 | US5250950 Vehicle |
09/08/1993 | EP0558691A1 New category of magnetic materials, their production and use. |
09/02/1993 | DE4205803A1 Electromagnetic compatible chamber - comprises inner walls coated with resistance material |
08/31/1993 | US5240768 Articles containing metal fibers |
08/24/1993 | US5238975 Microwave radiation absorbing adhesive |
08/05/1993 | WO1993015530A1 Absorber of electromagnetic waves |
08/05/1993 | DE4215954A1 Electromagnetic wave absorber in closed and screened spaces - has pyramidal frame and filling constituted by plastic foam impregnated with carbon, metal oxide or mixt. |
07/28/1993 | EP0553063A1 A yarn for the production of knitted articles able to attenuate low and medium frequency electromagnetic fields |
07/27/1993 | US5230763 Process for manufacturing a surface element to absorb electromagnetic waves |
07/06/1993 | US5225844 Rotor modulation suppressor |
07/06/1993 | US5225454 Radar camouflage material |
07/06/1993 | US5225284 For electromagnetic energy; opaque reflector and two electroconductive members |
07/01/1993 | DE4142480A1 Absorber element used to absorb electro-magnetic waves - comprises base made of electrically insulating material contg. finely divided dielectric and/or magnetic material |
06/29/1993 | US5223849 Broadband electromagnetic energy absorber |
06/29/1993 | US5223327 Electrically conductive surface element for forming an electromagnetic wave absorber |
06/24/1993 | DE4223138A1 Double reflector radar antenna with variable directional characteristic - has movable metal or metallised element within radiation field of main reflector or pivoted edge around main reflector |
06/24/1993 | DE4141763A1 Magnetic materials comprising spin-coupled hard and soft magnetic phases |
06/16/1993 | EP0546962A1 Method for manufacturing a knitted article from metal wires, new type of knitwear obtained this way and its application for manufacturing various composite structures |
06/16/1993 | EP0546255A2 Electromagnetic wave absorber |
06/16/1993 | EP0546182A1 Method for absorbing electromagnetic wave |
05/27/1993 | WO1993009944A1 Materials for electromagnetic radiation attenuation |
05/27/1993 | DE4138771A1 Electroconductive film prodn. on plastics surface - esp. for electromagnetic screen by impregnation with monomer and oxidant to form conductive polymer |
05/27/1993 | CA2123598A1 Materials for electromagnetic radiation attenuation |
05/25/1993 | US5214432 Broadband electromagnetic energy absorber |
05/04/1993 | US5208599 Serrated electromagnetic absorber |
04/29/1993 | WO1993008586A1 Microwave-absorbing component, and the use of such a component |
04/28/1993 | EP0539297A1 Device with adjustable frequency selective surface |
04/13/1993 | US5202701 Low radar cross section reflector antenna |
04/13/1993 | US5202688 Bulk RF absorber apparatus and method |
04/13/1993 | US5202535 Chiral absorber |
04/08/1993 | DE4132603A1 Absorber for damping electromagnetic waves - contains resistive conductor forming closed loop on reflective surface, matching resistors in loop sections not horizontally aligned w.r.t. surface |
04/01/1993 | WO1993005960A1 Weather-resistant electromagnetic interference shielding for electronic equipment enclosures |
03/17/1993 | EP0531979A1 Mobile object discriminating system |
03/03/1993 | EP0530038A1 Serrated electromagnetic absorber |
03/01/1993 | CA2076993A1 Serrated electromagnetic absorber |
02/23/1993 | US5189078 Microwave radiation absorbing adhesive |
02/18/1993 | DE4127103A1 Horn-shaped closed TEM waveguide - has microwave absorber on rear wall, floor and side walls, enabling emission measurement as well as noise resistance measurement |
02/18/1993 | DE4127045A1 Surface absorber for electromagnetic HF radiation - has induction loop grid deposited directly on resistance layer, facing impinging waves |
02/09/1993 | US5185654 Electrostatic RF absorbant circuit carrier assembly and method for making the same |
02/09/1993 | US5185381 Foam absorber |
01/21/1993 | DE4121584A1 Camouflaging and strong elimination of radar radiation in inlet of drive - includes impinging radar radiation in inlet duct using divergent tube and associated mode converter |
01/12/1993 | US5179381 Electromagnetic wave absorber for VHF to UHF band |
01/07/1993 | WO1993000786A1 Method for fabricating a screen absorbing electromagnetic radiation |
12/24/1992 | DE4120663A1 Magnetic materials comprising spin-coupled hard and soft magnetic phases |
12/23/1992 | CN1019556B Complex microwave absorbing agent and prepn. method thereof |
12/22/1992 | US5173699 For suppressing indirectly received radar signals |
12/10/1992 | WO1992022193A1 Method for absorbing electromagnetic wave |
11/17/1992 | US5164242 Electromagnetic wave attenuating and deicing structure |
10/13/1992 | US5155316 Heat-conducting mat for absorbing microwave and electromagnetic wave energy |
09/29/1992 | US5151222 Foam absorber |
09/17/1992 | WO1992016033A1 Component for the absorption of electromagnetic waves, and the use of such a component |
09/17/1992 | WO1992015995A1 New category of magnetic materials, their production and use |
09/15/1992 | US5147718 Iron carbonyl coating |
09/10/1992 | DE4201871A1 Bauteil zur absorption elektromagnetischer wellen und seine verwendung Component to the absorption of electromagnetic waves and its use |
09/10/1992 | DE4107499A1 New magnetic material based up coupled exchange of hard and soft materials - with alloy including rare earth materials and with remanence to saturation magnetisation of more than 0.6 |
08/26/1992 | EP0499868A2 Glass sheeting element with low degree of radar reflection |
08/11/1992 | US5137991 Polyaniline compositions, processes for their preparation and uses thereof |
07/29/1992 | EP0495967A1 Building components |
07/28/1992 | US5134405 Electromagnetically anechoic chamber and shield structures therefor |
07/23/1992 | DE4101074A1 Low radar reflection glazing element for building near airport radar installation - has thick front glass pane sepd. by wide space from back glass contg. electroconducting layer |
07/22/1992 | EP0495459A1 Use of composite materials which contain metal particles in an isolating oxide matrix as dielectrics |
07/07/1992 | US5128678 Aircraft construction |
06/30/1992 | US5125992 Bulk rf absorber apparatus and method of making same |