Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7746264 | Low reflectance infrared camouflage system An infrared camouflage coating system for application to the strategic surfaces of jet engine components comprised of a metal alloy substrate having an oxidized surface and a ferrous sulfide containing silicate glass bonded thereto. ... | 06/29/2010 |
| 7733263 | Infrared camouflage coating system A camouflage coating system for application to the surfaces of jet engine components in order to reduce their level of emitted energy there by rendering them undetectable by infrared detection systems. The camouflage coating comprises a multilayer system having a fi... | 06/08/2010 |
| 7633424 | Wide temperature range dielectric absorber According to one exemplary embodiment, a wide temperature range dielectric absorber includes a dielectric absorber comprising a blend of lanthanum oxide, strontium oxide, and cobalt oxide, and is represented by (1−z)[La1−xSrxCoO3±y | 12/15/2009 |
| 7450051 | Systems and methods for discriminating signals in a multi-band detector A radar detector is operated to suppress nuisance radar alerts by identifying a first signal in radar band of interest, e.g., having a frequency that is a harmonic of a first nuisance local oscillator frequency leaked from a nearby radar detector and identifying a s... | 11/11/2008 |
| 7432855 | RFID reader and active tag In one embodiment, an RFID reader and active tag (RAT) includes: a first beam forming means for interrogating a plurality of RFID tags using at least a first set of two antennas coupled to a first fixed phase feed network, the beam forming means being configured to ... | 10/07/2008 |
| 7403152 | Method and arrangement for reducing the radar cross section of integrated antennas An antenna structure including an antenna 10 with an outer main surface 11, where said antenna 10 is integrated in a surface of a surrounding material 20. Further comprising a transition zone 30 arranged along the perimeter of the ... | 07/22/2008 |
| 7375688 | Electromagnetic compatability with window-choke rings A choke ring apparatus for attenuation of electromagnetic waves in a mobile platform fuselage includes a ground plane mounted on a surface of the fuselage. The choke ring has an axial circular window and a series of concentric circular ring segments on the ground pl... | 05/20/2008 |
| 7341002 | Missile countermeasure device, and methods of using same A countermeasure for luring an incoming hostile missile away from a vehicle is provided. The countermeasure includes a housing, an infrared-emission body containing a sublimation compound in a solid state, a heating source for converting the sublimation compound int... | 03/11/2008 |
| 7336215 | Electromagnetic radiation absorber based on magnetic microwires The invention relates to an electromagnetic radiation absorber for a preselected frequency range, comprising: an absorbent sheet (10) located such that said electromagnetic radiation falls on it, and a condu... | 02/26/2008 |
| 7324064 | Passive anti-jamming antenna system System and method for improving the interference resistance of an 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 or more sectors with respec... | 01/29/2008 |
| 7310059 | Transparent pane with radar-reflecting properties The panes (1) of a naval vessel or military vehicle are often coated with a radar-reflecting layer (20) for reduction of the radar signature of the vessel/vehicle. At the same time this layer increases an enemy's possibility of recognizing the vessel i... | 12/18/2007 |
| 7224274 | Locality information retrieval system An information retrieval system for retrieving information relating to a locality includes a data collecting module for collecting data relating to a location of the device and the locality in which the device is located. A processor, which is in communication with ... | 05/29/2007 |
| 7215275 | Independent temperature and apparent color control technology for adaptive camouflage An apparatus for adaptive camouflage with independent control of both temperature and apparent color. The apparatus has cells or individual pixels behind a transparent outer layer. The temperature of the outer layer is controlled by a heat transfer fluid flowing in ... | 05/08/2007 |
| 7202807 | Dynamic antenna A method and an antenna arrangement are disclosed for reducing the antenna radar cross section for an externally illuminating radar source. A radar pulse is transmitted with the antenna arrangement fully matched to achieve a lowest possible power loss of the pulse. ... | 04/10/2007 |
| 7198231 | Method of applying ablative insulation coatings and articles obtained therefrom A method of forming ablative insulation coatings on aerospace structures and articles produced thereby. The method includes forming a mold having a cavity configured to complementarily receive at least a portion of the structure and directly molding the ablative coa... | 04/03/2007 |
| 7159818 | Multi-spectral air inlet shield and associated inlet structure A multi-spectral shield and associated inlet structure is provided for reducing the signature of an air inlet port defined within an exterior wall of an aircraft, ship, or land-based vehicle across radar and infrared wavelengths. The multi-spectral inlet shield incl... | 01/09/2007 |
| 7134804 | Bollard and accessories for use therewith A bollard having a plurality of parallel, vertical legs spaced apart from each other on the perimeter of a regular geometric shape. The minimum number and/or cross-section of the legs is governed by the need to avoid creating an entrapment area between adjacent legs... | 11/14/2006 |
| 7035308 | Method and system for countering laser technology Described herein is a method and system for providing a countermeasure against laser detection systems using nanocomponent material that is tailored to cloak or obscure a target from detection by transmitted laser radiation. The nanodot material absorbs and/or down-... | 04/25/2006 |
| 6992643 | Passive anti-jamming antenna system System and method for improving the interference resistance of an 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 or more sectors with respec... | 01/31/2006 |
| 6992314 | Device for eliminating electromagnetic waves Disclosed is a device for eliminating electromagnetic waves which consists essentially of an electromagnetic-wave trapping means comprising mainly a coil, and a discharge means made on the opposite end to the basement of the trapping means, wherein the coil having a... | 01/31/2006 |
| 6888489 | RF shielding elimination for linear array SAR radar systems There is provided a radar system for protecting a radar compartment from a transmitted radar beam. The radar system comprises an antenna having a transmitter surface for transmitting the radar beam. There is further provided a protective member having an outer prote... | 05/03/2005 |
| 6797401 | Electromagnetic wave absorbing materials Electromagnetic wave absorbing materials comprising magnetic alloy particles and an insulating matrix are disclosed. The magnetic alloy particles comprise a transition metal such as Fe and/or Co, and further comprise at least one refractory metal such as Ti, V, Cr, ... | 09/28/2004 |
| 6784419 | Electromagnetic wave absorber The present invention provides a flame-retardant electromagnetic wave absorber that exhibits excellent formability and electromagnetic wave-absorbing properties, and can be easily assembled and constructed. The electromagnetic wave absorber comprises a wave-absorbin... | 08/31/2004 |
| 6686866 | Two-piece radar-absorbing end cap assembly The two-piece end cap assembly has an end cap that has a groove around its perimeter and at least one cavity. The end cap is fixed in place inside the flare case with the cavities exposed. Sealant/adhesive is applied to the groove and cavity. A RAM cap, h... | 02/03/2004 |
| 6583749 | Antidetection by radar device for a flattened superstructure of a ship According to the invention, there is provided a device enveloping said superstructure and able to reflect electromagnetic waves, said device comprising a truncated pyramidal frame (6) and a net (7) covering the small base of said frame (6).... | 06/24/2003 |
| 6518911 | Non-skid, radar absorbing system, its method of making, and method of use A non-skid, radar absorbing system 10. The system absorbs and scatters incident microwave and/or millimeter wave radiation so as to decrease retro reflectance. The system includes an absorbing layer (RAM) 14 juxtaposed with a substrate 12. Disposed adjace... | 02/11/2003 |
| 6456224 | Edge concealment system for abating radar detectability of aircraft An edge concealment system for abating electrical discontinuities between externally exposed edges of adjacent surface pieces separated by a gap. The system includes a cover component shrouding each edge and able to absorb or conduct incident radar energy... | 09/24/2002 |
| 6417795 | Method of reducing backscatter through object shaping using the calculus of variations Variational calculus principles are applied directly to the radiation integral to minimize the radar signature of a two- or three-dimensional geometry. In the preferred embodiment, the radiation integral is minimized through the solution to a differential... | 07/09/2002 |
| 6411248 | Hot melt radar absorbing material (RAM) A glue-gun applied hot-melt radar-absorbing material (RAM) and method of use thereof is provided. The hot-melt radar-absorbing material composition comprises: (a) 70 to 85 wt % carbonyl iron powder; (b) 2 to 10 wt % of a metal deactivator; and (c) balance... | 06/25/2002 |
| 6380906 | Airborne and subterranean UHF antenna A ruggedized ultra high radio frequency antenna disposable at the rear of a hardened target penetrator warhead is provided. The antenna is usable for communicating signals from a transmitter in a deployed target penetrator warhead to a local repeater wher... | 04/30/2002 |
| 6318667 | Stealth weapon systems A winged bomb is launched from a launch aircraft and glides to a target. During the glide the winged bomb follows a calculated guide path stored in a on board computer, with correction generated by the computer using data from an altimeter and global posi... | 11/20/2001 |
| 6184815 | Transmission line electromagnetic reflection reduction treatment A transmission line electromagnetic reflection reduction treatment is disclosed herein. This invention relates to radar cross section reduction in vehicles including aircraft, submarines, warships, tanks, troop carriers, and mobile weapons, and reduction ... | 02/06/2001 |
| 6134879 | Suppression system for a gas turbine engine A suppression system for a gas turbine engine uses a tapered exhaust manifold with a plurality of exhaust nozzles acting in conjunction with a plurality of mixing cells to produce cooling of an exhaust gas stream upon exit from an aircraft. The cooling ai... | 10/24/2000 |
| 6116540 | Aircraft vertical tail with shadowed base In accordance with the present invention, there is provided a low observable aerodynamic control system for integrated use with an aircraft fuselage. The control system is provided with a shadow structure having an inner sloping region and an outer slopin... | 09/12/2000 |
| 6097327 | Radio frequency absorber system An RF absorber system (26) for absorbing RF energy in the payload chamber (20) of a launch vehicle is disclosed. The RF absorber system (26) includes a plurality of panels (27) for providing acoustic absorption and for housing RF absorbing material. The p... | 08/01/2000 |
| 6057796 | Electromagnetic wave absorber An electromagnetic wave absorber which is suitable for cellular phones, portable communication terminals and other portable electronic apparatus. The electromagnetic wave absorber is provided with a thin absorbing substrate formed of an electromagnetic wa... | 05/02/2000 |
| 5976666 | Electromagnetic radiation absorbing devices and associated methods of manufacture and use Novel devices for providing shielding from and absorption of broadband electromagnetic radiation, and methods of manufacturing and using these devices, are disclosed. The device is comprised of a perforated electrical absorbing layer, containing conductiv... | 11/02/1999 |
| 5965056 | Radio wave absorbent A radio wave absorbent comprises an Ni--Cu--Zn base ferrite having a major composition comprising 49 to less than 50 mol % of Fe2 O3, 32 to 35 mol % of ZnO, 3 to 9 mol % of CuO and 9 to 14 mol % of NiO. The radio wave absorbent furth... | 10/12/1999 |
| 5855988 | Electromagnetic wave absorbing shielding material An electromagnetic wave absorbing shielding material which is thin and lightweight and shows high electromagnetic wave absorbing capacity in a wide frequency region. The material comprises: (1) a one-dimensional conductive segment pattern which is a conductive... | 01/05/1999 |
| 5844518 | Thermoplastic syntactic foam waffle absorber The microwave absorption performance of a fiber loaded thermoplastic syntactic material is improved by geometrically reshaping the surface into a waffle shape. Starting with a fiber loaded version of thermoplastic syntactic foam, the front face geometry i... | 12/01/1998 |
