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| Number | Title | Issue Date |
| 6892989 | Method for reducing the drag of blunt-based vehicles by adaptively increasing forebody roughness A method for reducing drag upon a blunt-based vehicle by adaptively increasing forebody roughness to increase drag at the roughened area of the forebody, which results in a decrease in drag at the base of this vehicle, and in total vehicle drag. ... | 05/17/2005 |
| 6828935 | Digitally synthesized phased antenna for multibeam global positioning In a system according to the proposed technique (see figure), the signal received by each element of the array antenna would be subjected to downconversion, and spread-spectrum demodulation and correlation as necessary; this processing would be performed separately ... | 12/07/2004 |
| 6825982 | Strongly-refractive one-dimensional photonic crystal prisms One-dimensional (1D) photonic crystal prisms can separate a beani of polychromatic electromagnetic waves into constituent wavelength components and can utilize unconventional refraction properties for wavelength dispersion over significant portions of an entire phot... | 11/30/2004 |
| 6791108 | Protective fullerene (C60) packaging system for microelectromechanical systems applications The invention involves tunneling tips to their conducting surface, and specifically the deposition of a monolayer of fullerene C60 onto the conducting plate surface to protect the tunneling tip from contact. The Fullerene C60 molecule is approx... | 09/14/2004 |
| 6788420 | Heterodyne interferometer with a phase modulated source The present invention relates to a heterodyne interferometer system with a pre-processing of the target signal to isolate and remove self-interference signals using a known phase modulation of the carrier signal's frequency. Where self-interference signals do not in... | 09/07/2004 |
| 6764525 | Method for manufacturing thin-film lithium microbatteries A process for making thin-film batteries including the steps of cleaning a glass or silicon substrate having an amorphous oxide layer several microns thick; defining with a mask the layer shape when depositing cobalt as an adhesion layer and platinum as a current co... | 07/20/2004 |
| 6758098 | Force-measuring clamp A precision clamp accurately measures force over a wide range of conditions. Using a full bridge or other strain gage configuration, the elastic deformation of the clamp is measured or detected by the strain gages. The strain gages transmit a signal that corresponds... | 07/06/2004 |
| 6753469 | Very high efficiency, miniaturized, long-lived alpha particle power source using diamond devices for extreme space environments A power source converts α-particle energy into electricity by coulomb collision in doped diamond films. Alpha particle decay from curium-244 creates electron-hole pairs by freeing electrons and holes inside the crystal lattice in N- and P-doped diamond films. Ohmic... | 06/22/2004 |
| 6728666 | Evolvable circuit with transistor-level reconfigurability An evolvable circuit includes a plurality of reconfigurable switches, a plurality of transistors within a region of the circuit, the plurality of transistors having terminals, the plurality of transistors being coupled between a power source terminal and a power sin... | 04/27/2004 |
| 6710880 | Interferometric apparatus for ultra-high precision displacement measurement A high-precision heterodyne interferometer measures relative displacement by creating a thermally-insensitive system generally not subject to polarization leakage. By using first and second light beams separated by a small frequency difference (Δf), beams of light ... | 03/23/2004 |
| 6707429 | Self-contained sub-millimeter wave rectifying antenna integrated circuit The invention is embodied in a monolithic semiconductor integrated circuit in which is formed an antenna, such as a slot dipole antenna, connected across a rectifying diode. In the preferred embodiment, the antenna is tuned to received an electromagnetic wave of abo... | 03/16/2004 |
| 6700298 | Extremely-efficient, miniaturized, long-lived alpha-voltaic power source using liquid gallium A power source converts -particle energy to electricity for use in electrical systems. Liquid gallium or other liquid medium is subjected to -particle emissions. Electrons are freed by collision from neutral gallium atoms to provide gallium ... | 03/02/2004 |
| 6667826 | Chromatic modulator for high resolution CCD or APS devices A system for providing high-resolution color separation in electronic imaging. Comb drives controllably oscillate a red-green-blue (RGB) color strip filter system (or otherwise) over an electronic imaging system such as a charge-coupled device (CCD) or ac... | 12/23/2003 |
| 6646723 | High precision laser range sensor The present invention is an improved distance measuring interferometer that includes high speed phase modulators and additional phase meters to generate and analyze multiple heterodyne signal pairs with distinct frequencies. Modulation sidebands with larg... | 11/11/2003 |
| 6558836 | Structure of thin-film lithium microbatteries A process for making thin-film batteries including the steps of cleaning a glass or silicon substrate having an amorphous oxide layer several microns thick; defining with a mask the layer shape when depositing cobalt as an adhesion layer and platinum as a... | 05/06/2003 |
| 6526821 | Airfoil shaped flow angle probe The present invention is a force-based instrument that measures local flow angle. The preferred embodiment of the invention has a low aspect ratio airfoil member connected to a mounting base. Using a series of strain gauges located at the connecting porti... | 03/04/2003 |
| 6526556 | Evolutionary technique for automated synthesis of electronic circuits A method for evolving a circuit comprising configuring a plurality of transistors using a plurality of reconfigurable switches so that each of the plurality of transistors has a terminal coupled to a terminal of another of the plurality of transistors tha... | 02/25/2003 |
| 6522403 | Computed tomography imaging spectrometer (CTIS) with 2D reflective grating for ultraviolet to long-wave infrared detection especially useful for surveying transient events The optical system of this invention is an unique type of imaging spectrometer, i.e. an instrument that can determine the spectra of all points in a two-dimensional scene. The general type of imaging spectrometer under which this invention falls has been ... | 02/18/2003 |
| 6507187 | Ultra-sensitive magnetoresistive displacement sensing device An ultrasensitive displacement sensing device for use in accelerometers, pressure gauges, temperature transducers, and the like, comprises a sputter deposited, multilayer, magnetoresistive field sensor with a variable electrical resistance based on an imp... | 01/14/2003 |
| 6445280 | Composite material switches A device to protect electronic circuitry from high voltage transients is constructed from a relatively thin piece of conductive composite sandwiched between two conductors so that conduction is through the thickness of the composite piece. The device is b... | 09/03/2002 |
| 6446015 | Method and apparatus for flight data acquisition using an optimized multiple frequency waveform The present invention comprises a method and apparatus that generates a waveform consisting of an arbitrary number of frequency sweeps combined from adding and subtracting mini frequency sweeps. Optimization routines determine the best combination order o... | 09/03/2002 |
| 6387781 | Method of forming three-dimensional semiconductors structures Silicon and metal are coevaporated onto a silicon substrate in a molecular beam epitaxy system with a larger than stoichiometric amount of silicon so as to epitaxially grow columns of metal silicide embedded in a matrix of single crystal, epitaxially grow... | 05/14/2002 |
| 6381081 | Flexure-ring for centering a concave lens in a bore of a housing for an optical system A flexure-ring is provided for centering a lens in a bore of a housing with 3N lens contacting stubs, where N is an integer equal to or greater than one. The stubs are formed by increasing the inside diameter of the ring made to fit tightly around a lens ... | 04/30/2002 |
| 6374630 | Carbon dioxide absorption heat pump A carbon dioxide absorption heat pump cycle is disclosed using a high pressure stage and a super-critical cooling stage to provide a non-toxic system. Using carbon dioxide gas as the working fluid in the system, the present invention desorbs the CO2 | 04/23/2002 |
| 6352220 | Helicopter tail boom with venting for alleviation and control of tail boom aerodynamic loads and method thereof In at least one embodiment, the apparatus of the invention is a flight vehicle tail assembly having an exterior surface, at least one first vent in the exterior surface, at least one second vent in the exterior surface, and an air passage connecting the a... | 03/05/2002 |
| 6335654 | Inrush current control circuit An inrush current control circuit having an input terminal connected to a DC power supply and an output terminal connected to a load capacitor limits the inrush current that charges up the load capacitor during power up of a system. When the DC power supp... | 01/01/2002 |
| 6324495 | Synchronous parallel system for emulation and discrete event simulation A synchronous parallel system for emulation and discrete event simulation having parallel nodes responds to received messages at each node by generating event objects having individual time stamps, stores only the changes to the state variables of the sim... | 11/27/2001 |
| 6311107 | Wind advisory system The present invention is a two-part wind advisory system comprising a ground station at an airfield and an airborne unit placed inside an aircraft. The ground station monitors wind conditions (wind speed, wind direction, and wind gust) at the airfield and... | 10/30/2001 |
| 6301775 | Alumina encapsulated strain gage, not mechanically attached to the substrate, used to temperature compensate an active high temperature gage in a half-bridge configuration A temperature compensation element for a high-temperature strain gage and the method of fabricating the same. Preferably, the element is a "dummy" strain gage not mechanically attached to the substrate. The element is encapsulated in an insulative materia... | 10/16/2001 |
| 6277438 | Protective fullerene (C60) packaging system for microelectromechanical systems applications The invention involves a method for locating the probe of a scanning tunneling micrograph a predetermined distance from its conducting surface, and specifically the deposition of a monolayer of fullerene C60 onto the conducting plate. The Fulle... | 08/21/2001 |
| 6271646 | Battery cell by-pass circuit The invention is a circuit and method of limiting the charging current voltage from a power supply net work applied to an individual cell of a plurality of cells making up a battery being charged in series. It is particularly designed for use with batteri... | 08/07/2001 |
| 6253166 | Stable algorithm for estimating airdata from flush surface pressure measurements An airdata estimation and evaluation system and method, including a stable algorithm for estimating airdata from nonintrusive surface pressure measurements. The airdata estimation and evaluation system is preferably implemented in a flush airdata sensing ... | 06/26/2001 |
| 6232866 | Composite material switches A device to protect electronic circuitry from high voltage transients is constructed from a relatively thin piece of conductive composite sandwiched between two conductors so that conduction is through the thickness of the composite piece. The device is b... | 05/15/2001 |
| 6216063 | On-line μ method for robust flutter prediction in expanding a safe flight envelope for an aircraft model under flight test A structured singular value (μ) analysis method of computing flutter margins has robust stability of a linear aeroelastic model with uncertainty operators (Ɗ). Flight data is used to update the uncertainty operators to accurately account for errors in t... | 04/10/2001 |
| 6209821 | Apparatus and method for measuring air temperature ahead of an aircraft for controlling a variable inlet/engine assembly The apparatus and method employ remote sensing to measure the air temperature a sufficient distance ahead of the aircraft to allow time for a variable inlet/engine assembly to be reconfigured in response to the measured temperature, to avoid inlet unstart... | 04/03/2001 |
| 6195203 | Apparatus for direct optical fiber through-lens illumination of microscopy or observational objects In one embodiment of the invention, a microscope or other observational apparatus, comprises a hollow tube, a lens mounted to the tube, a light source and at least one flexible optical fiber having an input end and an output end. The input end is position... | 02/27/2001 |
| 6195184 | High-resolution large-field-of-view three-dimensional hologram display system and method thereof A real-time, dynamic, free space-virtual reality, 3-D image display system which is enabled by using a unique form of Aerogel as the primary display media. A preferred embodiment of this system comprises a 3-D mosaic topographic map which is displayed by ... | 02/27/2001 |
| 6133572 | Infrared detector system with controlled thermal conductance A thermal infrared detector system includes a heat sink, a support member, a connection support member connecting the support member to the heat sink and including a heater unit. An infrared detector element is mounted on the support member and a temperat... | 10/17/2000 |
| 6126111 | Emergency flight control system using one engine and fuel transfer A system for emergency aircraft control uses at least one engine and lateral fuel transfer that allows a pilot to regain control over an aircraft under emergency conditions. Where aircraft propulsion is available only through engines on one side of the ai... | 10/03/2000 |
| 6102330 | Emergency multiengine aircraft system for lateral control using differential thrust control of wing engines An emergency flight control system is disclosed for lateral control using only differential engine thrust modulation of multiengine aircraft having at least two engines laterally displaced to the left and right from the axis of the aircraft in response to... | 08/15/2000 |
