Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8164506 | Electromagnetic absorber using resistive material An electromagnetic absorber using resistive material includes a ground plane of a conductive material; a dielectric layer formed on the ground plane; and a pattern layer in which specific unit cell patterns made of a resistive material are periodically arranged on t... | 04/24/2012 |
| 8072366 | Radio wave absorber, electromagnetic field measurement system and radiated immunity system A radio wave absorber for use in an electromagnetic field probe that measures an electromagnetic field by means of an antenna section provided therewith, the radio wave absorber including: a first end section; a second end section that is located at a position oppos... | 12/06/2011 |
| 8063812 | Radio wave absorber, electromagnetic field measurement system and radiated immunity system A radio wave absorber for use in an electromagnetic field probe that measures an electromagnetic field by means of an antenna section provided therewith, the radio wave absorber including: a first end section; a second end section that is located at a position oppos... | 11/22/2011 |
| 7990307 | Integrity monitor antenna systems for GPS-based precision landing system verification The integrity of operation of a GPS precision aircraft approach and landing system may be compromised by error producing effects of reflected multipath signals. An integrity monitor antenna system as disclosed may utilize both attenuation and shadowing of reflected ... | 08/02/2011 |
| 7973696 | Thin film emitter-absorber apparatus and methods Methods and apparatus for providing a tunable absorption-emission band in a wavelength selective device are disclosed. A device for selectively absorbing incident electromagnetic radiation includes an electrically conductive surface layer including an arrangement of... | 07/05/2011 |
| 7956793 | Selective reflective and absorptive surfaces and methods for resonantly coupling incident radiation Methods and apparatus for providing a tunable absorption band in a wavelength selective surface are disclosed. A device for selectively absorbing incident electromagnetic radiation includes an electrically conductive surface layer including an arrangement of multipl... | 06/07/2011 |
| 7940204 | Absorber assembly for an anechoic chamber An electromagnetic absorber assembly capable of minimizing reflectivity caused by reflected and diffracted waves within a test chamber is presented. The absorber assembly includes a plurality of first wedges and a plurality of second wedges disposed in a symmetrical... | 05/10/2011 |
| 7940203 | Electromagnetic wave absorption board to be used in wireless LAN In a double glazing where a pair of transparent glass sheets are arranged at an interval by having a spacer at the circumferential end portion and where a hollow layer sealed between the pair of glass sheets is formed, there is provided an electromagnetic absorption... | 05/10/2011 |
| 7830296 | Anechoic structures for absorbing electromagnetic interference in a communications module A communications module includes an interior configuration designed to intercept, disrupt, and scatter EMI produced by the module during operation. The interior configuration may include an anechoic structure that includes a plurality of anechoic elements positioned... | 11/09/2010 |
| 7804439 | Electromagnetic wave absorber A thin, light and soft electromagnetic wave absorber is disclosed exhibiting an excellent workability. The first conductor element group of a first conductor element layer consists of aligned cross conductor elements and square conductor elements in regions surround... | 09/28/2010 |
| 7623058 | Electromagnetic wave absorbing plate An electromagnetic wave absorbing plate composed of a transparent plate-like dielectric, wherein a thickness of the dielectric is determined such that an electromagnetic wave absorption quantity determined by using an incident side impedance Zxi at a time at which t... | 11/24/2009 |
| 7471233 | Electromagnetic wave absorber An electromagnetic wave absorber includes a first electromagnetic wave absorbent member containing a magnetic loss material, and a second electromagnetic wave absorbent member containing a conducting material arranged in front of the first electromagnetic wave absor... | 12/30/2008 |
| 7427949 | System and method of using absorber-walls for mutual coupling reduction between microstrip antennas or brick wall antennas A multi-element antenna with sufficiently small return loss and mutual coupling signals to allow the simultaneous transmission of powerful radar signals and the reception of faint target return signals. The microstrip patch antenna has radio frequency absorbing mate... | 09/23/2008 |
| 7420500 | Electromagnetic radiation absorber An electromagnetic radiation absorber for absorbing radiation in the wavelength range λmin to λmax. The absorber has a conductor layer in contact with a dielectric layer. The conductor layer carries a plurality of apertures of sub-wavelength ... | 09/02/2008 |
| 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 |
| 7397414 | Electromagnetic wave absorption complex, and method of producing the same An electromagnetic wave absorber is formed by injection-molding a thermoplastic resin blended with approximately 20-60% by volume of soft magnetic material powder, and blended with a molding assistant and a kneading assistant. The electromagnetic wave absorber inclu... | 07/08/2008 |
| 7366472 | Technology for creating a RF radiation-free environment The invention relates to a method of rendering telecommunication devices ineffective, by creating a substantially radio frequency radiation-free environment by providing an interference generating pattern (IGP) adjacent to the environment in a position between the e... | 04/29/2008 |
| 7350753 | RF shielding for aircraft windows Disclosed is an improved aircraft window having RF shielding. In one embodiment, a window shield comprises an electrically conductive, transparent, flexible film, which is applied by known processes to a window pane. This shield is grounded to the aircraft frame or ... | 04/01/2008 |
| 7345616 | Method and apparatus for reducing the infrared and radar signature of a vehicle A radar-absorbing panel (9) includes a honeycomb core (11) and a lower skin (13), where the lower skin (13) is attached to the bottom of the honeycomb core (11). The honeycomb core (11) is made up of individual cells (15 | 03/18/2008 |
| 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 |
| 7322267 | Enhanced light weight armor system with reactive properties A light-weight armor system for retrofitting onto light vehicles, such as HMMWVs, trucks, or helicopters, or incorporating into a vehicle to protect against HEAT or high explosive warheads. The armor system comprises multiple layers of a thin metal film. The front s... | 01/29/2008 |
| 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 |
| 7305930 | Marine vessel vent plate One embodiment of a vent plate for a marine vessel includes a plate having a top surface that defines a total surface area and a plurality of apertures arranged in a pattern covering at least one quarter of the total surface area, the pattern including a plurality o... | 12/11/2007 |
| 7301493 | Meta-materials based upon surface coupling phenomena to achieve one-way mirror for various electro-magnetic signals A one-way reflective sensor shield with an increased bandwidth meta-materials coating is provided which substantially reduces or eliminates deleterious electronic signatures and backscattering. The one-way reflective sensor shield with meta-materials coating operate... | 11/27/2007 |
| 7277300 | Vent grid and electronic apparatus employing the same A vent grid has parallel first electrically-conductive members and parallel second electrically-conductive members intersecting with the first electrically-conductive members. The intersection between the first and second electrically-conductive members is forced to... | 10/02/2007 |
| 7247368 | Stealth foam and production method Carbon foams exhibiting a dielectric constant of from about 2 to about 6 and simultaneously an electrical resistivity in the range of between about 1.E+00 ohm-cm and about 1.E+06 ohm-cm, demonstrate excellent radar emission absorptivity in the ... | 07/24/2007 |
| 7239261 | Electromagnetic wave absorption material and an associated device The purpose of the present invention is to provide an easy-to-manufacture electromagnetic wave absorption material usable from submillimeter wave region to millimeter wave region with an excellent radio wave absorbing performance and a variety of usage thereof. ... | 07/03/2007 |
| 7218266 | Electromagnetic wave absorber, method of manufacturing the same and appliance using the same An electromagnetic wave absorber for use in the high frequency range above 1 Ghz and a composite member are characterized by the fact that magnetic metal grains are covered with ceramic above 20 volume %. Further, a method of manufacturing the electromagnetic absorb... | 05/15/2007 |
| 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 |
| 7212147 | Method of agile reduction of radar cross section using electromagnetic channelization A method for reducing radar cross section of an object that has conductive portions and that is expected to be scanned by radar, which includes providing the object with a multiple layer radar cross section reducing structure that reduces or entraps or dissipates ra... | 05/01/2007 |
| 7204057 | HF-reducing green roofing The invention describes a HF-reducing green roof. This green roof comprises a support construction consisting of a layer of textile fibers and/or a substrate (12), a vegetation layer (14) of low plants, and a flat or three-dimensional structure of elec... | 04/17/2007 |
| 7190301 | Radio frequency anechoic chamber with nonperturbing wireless signalling means An anechoic chamber (100) is provided with a system for introducing wireless communication signals into the anechoic chamber (100) for establishing wireless signaling with equipment under test (122), without interfering with signals from the equ... | 03/13/2007 |
| 7136008 | Low cost electromagnetic energy absorbers manufactured from conductive loaded resin-based materials Electromagnetic energy absorbing devices are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a b... | 11/14/2006 |
| 7126525 | Millimeter wave-radar and method for manufacturing the same A millimeter-wave radar has a radome or radar cover including a layer, the dielectric constant of which is a greater than that of the other portion without the layer, or including a magnetic loss layer in an appropriate position with respect to the antenna. The diel... | 10/24/2006 |
| 7117640 | Radio frequency shielded and acoustically insulated door A door for a RF shielded and acoustically insulated room. The door includes a door panel and door frame adapted to electrically and pivotally contact the door panel. The door panel includes a noise absorbing material and a noise insulating gap disposed between outer... | 10/10/2006 |
| 7113123 | Electromagnetic wave absorber and a process of producing same An electromagnetic wave absorber having an excellent electromagnetic wave absorption characteristic in 5 to 6 GHz band. The electromagnetic wave absorber has a matrix and powder filled in the matrix. The particles of the powder have electrical conductivity at least ... | 09/26/2006 |
| 7108819 | Process for fabricating high aspect ratio embossing tool and microstructures A tool for embossing high aspect ratio microstructures is provided, wherein the microstructures provide decreased surface reflection and increased transmission through an optical component even at high incident angles. The tool is fabricated by a process that compri... | 09/19/2006 |
| 7106196 | Method and apparatus for configuring the read-range of an RFID label or tag A RFID device with a surface treatment which interferes with the transmission of RF signals/data between the RFID device and the RF interrogator or reader. A surface treatment of either RF reflective or RF absorptive ink is deposited on a RFID device using an attenu... | 09/12/2006 |
| 7102523 | Radio frequency identification tag antenna configurations A radio frequency identification (RFID) architecture is described. RFID tags are interrogated by a reader, which may be located in a network of readers. The reader transmits symbols to the tags. Tags respond to the interrogations with symbols that each represent one... | 09/05/2006 |
