| 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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| 12/19/1990 | EP0402970A1 Process for embodiment of absorbers for electromagnetic fields |
| 12/18/1990 | US4978965 Broadband dual-polarized frameless radiating element |
| 11/27/1990 | US4973963 Flat lattice for absorbing electromagnetic wave |
| 11/22/1990 | EP0398672A1 Microwave absorber for direct surface application |
| 11/22/1990 | EP0397967A1 Radar-absorbing outer façade |
| 11/20/1990 | US4972191 Wave absorber, and an anechoic chamber using the same |
| 10/24/1990 | EP0394207A1 Radar camouflage material |
| 10/20/1990 | WO1990013155A1 Radar camouflage material |
| 10/20/1990 | CA2031187A1 Radar camouflage material |
| 10/02/1990 | US4960633 Microwave-absorptive composite |
| 09/20/1990 | WO1990010959A1 Combination dipole array and slot array antenna |
| 09/04/1990 | US4953922 Web material for camouflage against electromagnetic radiation |
| 08/22/1990 | EP0383142A1 Electromagnetic wave absorbing means and method of making it as well as its utilization |
| 08/21/1990 | CA1273087A1 Multi-layered microwave absorber and method of manufacturing the same |
| 08/21/1990 | CA1273060A1 Device for the emi testing of electronic systems |
| 08/07/1990 | US4947174 Vehicle shield |
| 08/02/1990 | DE3902223A1 Radiation screen |
| 08/01/1990 | EP0380267A1 Microwave absorber employing acicular magnetic metallic filaments |
| 07/31/1990 | US4945362 Microwave shielding for satellite earth stations |
| 07/26/1990 | CA2005198A1 Microwave absorber employing acicular magnetic metallic filaments |
| 07/25/1990 | EP0378839A2 Rotor blade |
| 07/25/1990 | EP0378838A1 Method for the reduction of backscattering electromagnetic radiation at cavity structures open at one side |
| 07/25/1990 | EP0161245B1 Low density, electromagnetic radiation absorption composition |
| 07/18/1990 | EP0377879A1 Plane elements for the absorption or reduction of the reflection of electromagnetic waves |
| 07/18/1990 | EP0377878A1 Facade structure of a building with thermal insulation and method of producing an insulation |
| 07/17/1990 | US4942402 Silicon elastomer with fillers, moldings, coatings |
| 07/10/1990 | US4940596 Decomposing ferromagnetic complex |
| 07/03/1990 | US4939024 Radiowave absorbing body of the high electrical power-resistant type |
| 06/27/1990 | EP0374795A1 Radio wave absorbing material |
| 06/13/1990 | EP0372280A2 Camouflage net |
| 05/30/1990 | EP0370421A1 Electromagnetic wave absorber |
| 05/29/1990 | US4929574 Seals for microwaves ovens |
| 05/23/1990 | EP0369273A1 Method for comparing the quality of HF absorbers |
| 05/23/1990 | EP0369174A1 Broad-band absorber for electromagnetic waves |
| 05/17/1990 | DE3534059C1 Fibre composite material |
| 05/11/1990 | CA2002324A1 Method for comparing the quality of rf absorbers |
| 05/09/1990 | EP0367091A1 Blanket for shielding objects |
| 05/08/1990 | US4924228 Aircraft construction |
| 05/08/1990 | US4923736 Multi-layered microwave absorber and method of manufacturing the same |
| 04/26/1990 | DE3835805A1 Suppression of the radar reflection from surfaces, especially from aircraft |
| 04/19/1990 | WO1990004210A1 Electromagnetically non-reflective materials |
| 03/08/1990 | DE3931449A1 Funnel-shaped waveguide with transit time equalisation - has spherical absorber wall directly adjacent conductive housing rear wall of similar shape |
| 02/13/1990 | US4901086 Lens/polarizer radome |
| 02/07/1990 | EP0353923A2 Electromagnetic wave absorber |
| 01/18/1990 | DE3824292A1 Method for fabricating thin-film absorbers for electromagnetic waves |
| 01/11/1990 | WO1990000342A1 Electromagnetic wave absorber |
| 12/27/1989 | CN1038290A Compsn. of substance based on barium titanate utilizable for absorber of electromagnetic wave |
| 11/07/1989 | US4879562 Slotted microstrip antenna with ferrite coating |
| 11/07/1989 | US4879065 Processes of making plastics mixtures which absorb electromagnetic radiation and contain ferroelectric and/or piezoelectric substances |
| 11/02/1989 | EP0340052A1 Material composition based on barium titanate for absorbing electromagnetic radiation |
| 11/02/1989 | EP0339146A1 Electromagnetic wave absorber |
| 10/31/1989 | CA1262573A1 Microstrip antenna bulk load |
| 10/19/1989 | DE3811571A1 Chamber whose internal walls are fitted with plastic bodies for the purpose of absorbing electromagnetic waves |
| 10/05/1989 | DE3809499A1 Absorber for electromagnetic waves |
| 09/06/1989 | EP0331578A1 Dielectric ceramic composition for use at high frequencies and hyperfrequencies, and process for its manufacture |
| 08/29/1989 | US4862174 Magnetic material and carbon |
| 07/20/1989 | DE3744511A1 Method for controlled distribution in the spectral band of electromagnetic and/or acoustic energy which passes through and/or is reflected from a body of any shape, in order to make detectability more difficult, and for indirect reduction of the echo cross-section |
| 07/19/1989 | EP0323990A1 Process for manufacturing a material having predetermined dielectric, pyroelectric and/or magnetic properties and its use |
| 07/13/1989 | WO1989006338A1 Infrared signature control mechanism |
| 07/12/1989 | EP0323826A1 Electromagnetic wave absorber |
| 06/27/1989 | CA1256628A1 Electrically conductive microspheres and compositions incorporating same |
| 06/27/1989 | CA1256556A1 Aircraft skin antenna |
| 06/07/1989 | EP0318873A1 Electromagnetic wave absorbing element |
| 06/07/1989 | EP0318510A1 Web material for camouflage against electromagnetic radiation. |
| 06/06/1989 | US4837581 Device for the EMI testing of electronic systems |
| 05/03/1989 | EP0314366A2 Radiation absorber and method of making it |
| 04/27/1989 | DE3830335A1 De-icing device for aircraft |
| 04/25/1989 | US4825222 Omnidirectional antenna with hollow point source feed |
| 04/25/1989 | US4825049 Vapor deposition coating |
| 04/18/1989 | US4823132 Device for the simulation of radar targets in laboratory tests of radar seekers |
| 04/05/1989 | EP0310414A2 Lens/polarizer/radome |
| 03/22/1989 | EP0308334A1 Composite magnetic material and process for its production |
| 03/08/1989 | EP0306311A1 Electromagnetic wave absorbing material |
| 02/07/1989 | US4803495 Radio frequency array antenna with energy resistive material |
| 02/02/1989 | DE3815163A1 Device for suppressing reflections of electromagnetic waves |
| 01/26/1989 | WO1989000754A1 Process for manufacturing a material having predetermined dielectric, pyroelectric and/or magnetic properties and its use |
| 01/26/1989 | DE3802150A1 Verfahren zum herstellen eines bezueglich seiner dielektrischen, pyroelektrischen und/oder magnetischen eigenschaften vorgebbaren materials und dessen verwendung A process for the manufacture of a with respect to its dielectric, pyroelectric and / or magnetic properties of the material and its use predeterminable |
| 01/18/1989 | EP0299618A2 Preparation process for ferromagnetic metal fibers |
| 01/11/1989 | EP0298306A2 Radar camouflage material |
| 12/13/1988 | US4791419 Microwave absorbing means |
| 11/22/1988 | US4786915 Attenuation of microwave signals |
| 11/09/1988 | EP0290148A2 Surface coating with very high rf loss for microwave components |
| 07/27/1988 | EP0275430A2 Apparatus for simulating radar targets during the laboratory testing of radar seekers |
| 07/26/1988 | US4760312 Dense silicon carbide microwave absorber for electron linear accelerator |
| 07/07/1988 | DE3713875C1 Air inlet on aircraft |
| 06/28/1988 | CA1238714A1 Shaped beam antenna |
| 06/21/1988 | US4752525 Wave absorber and method for making same |
| 06/21/1988 | US4752504 Process for continuous chemical vapor deposition of carbonaceous films |
| 05/31/1988 | US4748449 RF absorbing ablating apparatus |
| 03/31/1988 | DE3709658A1 Absorber for electromagnetic waves |
| 03/15/1988 | US4731286 Microwave ovens |
| 03/08/1988 | US4730193 Microstrip antenna bulk load |
| 03/01/1988 | US4728554 Fiber structure and method for obtaining tuned response to high frequency electromagnetic radiation |
| 02/25/1988 | WO1988001363A1 Web material for camouflage against electromagnetic radiation |
| 02/23/1988 | US4726980 Electromagnetic wave absorbers of silicon carbide fibers |
| 02/16/1988 | US4725847 Reflector antenna having sidelobe nulling assembly with metallic gratings |
| 02/16/1988 | US4725490 High magnetic permeability composites containing fibers with ferrite fill |
| 02/02/1988 | US4722860 Carbon film coated refractory fiber cloth |
| 01/07/1988 | EP0250742A1 Radar-transparent sheet with controllable infra-red reflection for camouflage purposes |
| 01/07/1988 | EP0250741A1 Multi-spectral camouflage sheet |