Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8141822 | Autophagous multifunction structure-power system A vehicle including at least one bladder for containing a two-phase liquid-gas fuel at a predetermined pressure, with a bladder outlet arranged to releasing vapor fuel from the bladder. The fuel provides energy for propulsion of the vehicle, and the vapor pressure o... | 03/27/2012 |
| 8103178 | Linearized phase modulated analog optical links A phase-modulated analog optical link that uses parallel interferometric demodulation to mitigate the dominant intermodulation distortion present in the link. A receiver for demodulating phase modulated optical signals includes a splitter dividing the phase modulate... | 01/24/2012 |
| 8094519 | Intensity modulated fiber optic hydrophones A fiber optic hydrophone has a reflective diaphragm having an exposed face and a reflective protected face, at least one transmitting multimode optical fiber having an end spaced apart from the protected face of the diaphragm positioned to emit light toward the diap... | 01/10/2012 |
| 8077540 | System and method for determining vector acoustic intensity external to a spherical array of transducers and an acoustically reflective spherical surface A system and computer implemented method for determining and displaying vector acoustic intensity fields based on signals from a rigid spherical array of acoustic sensors within a volume external to the array. The method includes a propagator with a ratio of Green's... | 12/13/2011 |
| 8073017 | System and method for generating eye-safe high intensity optical pulses with two backward-shifting raman cells A system and method for converting a pulsed beam of irradiation from a laser operating at a first wavelength to a pulsed beam of irradiation at a second, Stokes, wavelength. The system includes two Raman cells filled with the same Raman-active gas. The second cell r... | 12/06/2011 |
| 8070090 | Stop-rotor rotary wing aircraft Systems and methods for transitioning an aircraft between helicopter and fixed wing flight modes are provided. In one embodiment, an aircraft comprises a plurality of wings each having a spar and a flap; a flap actuator configured to move the flap with respect to th... | 12/06/2011 |
| 8056400 | Method and apparatus for fluid sampling A method and system for particle entrained fluid sampling, capable of sampling a high pressure and/or high flow rate fluid flow system using a pressure intensifier for applying pressure or suction to the fluid sample in the fluid sampling system operatively connecte... | 11/15/2011 |
| 8027741 | System and method of improved kalman filtering for estimating the state of a dynamic system Embodiments include systems and methods of estimating at least one state of a modeled dynamic system. In particular, in one embodiment, an observer such as an extended Kalman filter is used to estimate the state of a modeled dynamic system. A covariance matrix assoc... | 09/27/2011 |
| 8011424 | System and method for convective heat transfer utilizing a particulate solution in a time varying field A convective heat transfer system for use with a fluid with particles, including a fluid channel having a wall and being capable of transferring the fluid, and a field emitter operable to emit a time-varying field into the fluid channel such that, when the fluid is ... | 09/06/2011 |
| 7889840 | System and method for predicting material fatigue and damage A method and system for determining damage prediction of a component. The component may be critical component used in an aircraft or other vehicle experiencing cyclic loading. The method and system determines the ΔK, Kmax and Kinternal values ... | 02/15/2011 |
| 7852543 | High performance chirped electrode design for large area optoelectronic devices An electro-optic device with a doped semiconductor base and a plurality of pixels on the semiconductor base. Pixels include oppositely doped semiconductor layer and a top electrode formed on the oppositely doped semiconductor layer. The top electrode has a grid patt... | 12/14/2010 |
| 7808722 | System and method for inducing far field transparency with negative index materials A lens system with a lens formed of a material having a negative index of refraction in an operational frequency range, a first surface of the material having a convex hyperbolic curvature, and a second surface of the material having a concave circular curvature. A ... | 10/05/2010 |
| 7792395 | Fiber optic acceleration and displacement sensors A fiber optic sensor for detecting acceleration or displacement includes a fiber optic probe with a multimode transmitting optical fiber, a multimode receiving optical fiber and a edge reflector spaced apart from the fiber probe. The reflector moves in a transverse ... | 09/07/2010 |
| 7791616 | Method for efficiently transforming a raster image from one map projection to another map projection A method and system for efficiently converting an image from a first map projection to a second map projection image. The method includes precomputing coordinates in the first map projection for a subset of the total number of pixels in an empty second map projectio... | 09/07/2010 |
| 7764840 | System, method and apparatus for clustering features using an expansion shape A computer-implemented method, system, computer-readable medium, and apparatus for identifying a boundary of a cluster in a bitmap, the bitmap having at least one initially set bit, for applying an expansion shape to each of the initially set bits in the bitmap and ... | 07/27/2010 |
| 7755828 | Method for optical control of microwave phase A method and system for modifying the detected phase of a signal by driving a photodetector into saturation. This system and method differs from current manual and electrical microwave phase modification by using saturation means for modifying the phase. The system ... | 07/13/2010 |
| 7719746 | High performance chirped electrode design for large area optoelectronic devices An electro-optic device with a doped semiconductor base and a plurality of pixels on the semiconductor base, each pixel including: a multiple quantum well formed on the semiconductor base, an oppositely doped semiconductor layer on the multiple quantum well, and a t... | 05/18/2010 |
| 7715727 | System and method for transmitting analog signals with a modulating retroreflector and hybrid amplitude and frequency modulation A system and method for encoding an analog input signal for optical transmission, including driving a voltage controlled oscillator with an analog input signal to produce a frequency modulated electrical signal having a frequency proportional to the amplitude of the... | 05/11/2010 |
| 7697798 | Fiber optic pressure sensors and catheters A catheter with many fiber optic pressure sensors. The sensor diaphragm is formed from a wafer with a thin silicon layer and a silicon substrate layer separated by a silicon dioxide layer. A method includes masking and etching channels through the silicon substrate ... | 04/13/2010 |
| 7683444 | Metamaterial structure has resonant and strip line elements comprising a photoconductive semiconductor material formed on substrate to induce negative permeability and negative permittivity in operating frequency range Materials and structures whose index of refraction can be tuned over a broad range of negative and positive values by applying above band-gap photons to a structure with a strip line element, a split ring resonator element, and a substrate, at least one of which is ... | 03/23/2010 |
| 7486227 | System and method for removal of sea-state bias in satellite altimetry data A method for correcting bias in altimetry data for ascending satellite tracks and descending satellite tracks. For satellites operating in tandem, calculate ascending track bias between the height measurement made by the first and the second satellites for the ascen... | 02/03/2009 |
| 7379630 | Multiplexed fiber optic sensor system A multiplexed fiber optic sensor system including a first optical fiber having a first end arranged to receive light from a light souce, at least two optical fibers having diameters smaller than the first optical fiber, and at least two fiber optic sensors, each of ... | 05/27/2008 |
| 7349806 | System and method for extracting optical properties from environmental parameters in water A method for predicting water clarity at a plurality of water depths for a location including providing training data to a neural network, the training data representative of water measurements at the location, thereafter receiving inputs including temperature, sali... | 03/25/2008 |
| 7327928 | Gas filled hollow core chalcogenide photonic bandgap fiber Raman device and method A hollow core photonic bandgap chalcogenide glass fiber includes a hollow core for passing light therethrough, a Raman active gas disposed in said core, a microstructured region disposed around said core, and a solid region disposed around said microstructured regio... | 02/05/2008 |
| 7283908 | System and method for estimating ocean height and current on a personal computer with location adjustment A system and method for estimating ocean surface height and currents at points within a geographic grid. The method includes receiving a user selected location, receiving bathymetric data from a global database, determining whether the user selected location corresp... | 10/16/2007 |
| 7251563 | System and method for computing inorganic particle suspensions by wave and current action A method for estimating a suspended sediment distribution in an ocean region. The method includes receiving time-dependent variables including wave height, wave period, wave propagation direction, steady current magnitude, steady current direction, and water depth, ... | 07/31/2007 |
| 7251564 | System and method for estimating ocean height and current on a personal computer with hurricane module A system and method for estimating ocean surface height and currents at points within a geographic grid. The method includes receiving bathymetric data from a global database, generating atmospheric forcing information based on a hurricane model, and estimating curr... | 07/31/2007 |
| 7248751 | Algorithmic technique for increasing the spatial acuity of a focal plane array electro-optic imaging system A system for enhancing images from an electro-optic imaging sensor and for reducing the necessary focal length of a sensor while preserving system acuity. This system uniquely reduces the necessary focal length and enhances images by collecting a video sequence, est... | 07/24/2007 |
| 7224869 | Low loss electrodes for electro-optic modulators An electro-optic modulator includes a substrate, at least two parallel optical waveguides, at least one ground plane, at least one active electrode with at least two lower portions of the active electrode, and an upper portion connected to the lower portions, the lo... | 05/29/2007 |
| 7158067 | Analog to digital converter using sawtooth voltage signals with differential comparator An analog to digital converter includes a resistor-divider network including a plurality of resistors, an arbel channel circuit configured to generate a voltage sawtooth signal as an output, a dc-offset disposed to couple a node of the resistor-divider network and t... | 01/02/2007 |
| 7142145 | Analog-to-digital converter An analog to digital converter circuit includes an isolation circuit, an input circuit including a resistor chain, a plurality of fixed threshold comparators, and an encoder. The resistor chain includes a plurality of resistors connected in series, the isolation cir... | 11/28/2006 |
| 7103949 | Method for fabricating a transducer A method for fabricating a transducer suitable for a fluidic drive for a miniature acoustic-fluidic pump or mixer that includes an acoustic transducer attached to an exterior or interior of a fluidic circuit or reservoir. The transducer converts radio frequency elec... | 09/12/2006 |
| 7100205 | Secure attention instruction central processing unit and system architecture A central processing unit comprising means for processing computer instructions. The Means for processing computer instructions includes means for receiving computer instructions and means for executing computer instructions. A secure memory unit is coupled to the p... | 08/29/2006 |
| 7054505 | Composite Hough transform for multitarget multisensor tracking A system and method for tracking multiple targets using distributed linear sensor arrays. The system includes a plurality of arrays of sensors for receiving signals from a target; a receiver for receiving signals received by the plurality of sensor arrays; an analog... | 05/30/2006 |
| 7034701 | Identification of fire signatures for shipboard multi-criteria fire detection systems A multi-criteria fire detection system, comprising a plurality of sensors, wherein each sensor is capable of detecting a signature characteristic of a presence of a fire and providing an output indicating the same. A processor for receiving each output of the plural... | 04/25/2006 |
| 7027833 | Dual band superheterodyne receiver A MMIC based superheterodyne receiver for converting at RF energy in an upper and a lower frequency band includes at least one attenuator for the RF energy input, a mixer for mixing the lower band input with a LO1 signal, another mixer for mixing the upper band inpu... | 04/11/2006 |
| 7022198 | Microwave assisted reactive brazing of ceramic materials A method for joining similar materials to create multi-component assemblies so the joint materials share similar physical, chemical, and electrical characteristics with the base materials. The method includes aligning the materials, applying joining material, focusi... | 04/04/2006 |
| 7020354 | Intensity modulated fiber optic pressure sensor A fiber optic pressure sensor featuring a cartridge housing having an end that is exposed to the atmosphere, a thin flexible membrane covering the exposed end of the cartridge housing such that the flexible membrane has an exposed side and a protected side. A fiber ... | 03/28/2006 |
| 6998599 | Intensity modulated fiber optic microbend accelerometer A microbend accelerometer comprising a housing having a housing base and a housing top, where housing base has corrugations that protrude from the surface of the housing and an internal mass assembly located between the housing top and the side of the housing base. ... | 02/14/2006 |
| 6996136 | Ultrashort-pulse fiber laser with a dispersion-managed cavity The ultrashort fiber laser with a dispersion-managed cavity. The laser is an actively mode-locked sigma laser, typically locked at a repetition rate of 10 GHz, driven by an external frequency source and actively length stabilized, and nearly 10,000 pulses circulate ... | 02/07/2006 |
