| Patent Number |
Title Of Patent |
Date Issued |
| 5644922 |
Cylindrical chamber for the rapid cooling and warming of samples between room and cryogenic temp |
July 8, 1997 |
| The cylindrical chamber allows one to quickly package a test fixture with attached sample, cool it to liquid-nitrogen temperature in a few minutes, and warm it back up to room temperature in a few minutes in a dry, helium or nitrogen atmosphere, which prevents water or ice from condensin |
| 5641737 |
Powdered sulfones as high temperature lubricants |
June 24, 1997 |
| Substituted biphenyl sulfones of the formula: ##STR1## wherein R is ##STR2## wherein Z is --H, --CH.sub.3, --CF.sub.3, --F, --OCH.sub.3 or --OCF.sub.3 ; and R' is --R or --H, are useful as lubricants in the temperature range of up to about 750.degree. F. |
| 5640429 |
Multichannel non-gaussian receiver and method |
June 17, 1997 |
| A process and system for improving the detection of signals in additive correlated non-Gaussian noise using multichannel data. This improves detection performance of receivers through the signal processing architecture when the observation data X(n) is first split into an upper and l |
| 5639673 |
Transparent ohmic contacts for Schottky diode optical detectors on thin and inverted epitaxial l |
June 17, 1997 |
| An InP buffer layer is first formed upon an InP substrate; a thin layer of heavily doped InGaAs, a thick layer of light absorbing InGaAs, and a thin layer of InAlAs are thereafter sequentially grown upon the InP buffer layer. A light reflective Schottky barrier metallic layer is then app |
| 5634955 |
Process of making channel waveguides in gel-silica |
June 3, 1997 |
| Optical waveguides are produced in laser densified Type VI porous gel-silica. A CO.sub.2 laser directly scans the substrate having a pore size of about 30 angstroms. Tracks having a width of about 50 microns are produced. |
| 5633337 |
Aromatic benzobisazole polymers and copolymers incorporating diphenylamino moieties |
May 27, 1997 |
| A polymer having repeating units of the formula: ##STR1## wherein Q is ##STR2## wherein X is --NH--, --S-- or --O--. A copolymer having repeating units of the formula: ##STR3## wherein x has a value of 0.01 to 0.99 and Q is ##STR4## wherein X is --NH--, --S-- or - |
| 5631571 |
Infrared receiver wafer level probe testing |
May 20, 1997 |
| A system for functionally testing opto-electronic devices, such as fiber-optic infrared receiver photodiodes, in the integral wafer or other optical port-exposed status. The testing arrangement uses a portable optical probe for communicating optical signals between the testing appara |
| 5629848 |
Spatial disorientation detector |
May 13, 1997 |
| A spatial disorientation detector system capable of warning a pilot of potentially disorienting flight conditions in response to Kalman filter modeling of human response characteristics. The Kalman filter models are representative of human semicircular canal and otolith responses and are |
| 5629802 |
Spatially multiplexed optical signal processor |
May 13, 1997 |
| A spatial light modulator has a plurality of pairs of input and reference images recorded upon a plurality of sub-areas thereof. Each sub-area is illuminated with an associated point source of light which is produced by illuminating a diffraction grating with coherent light. A Fourier |
| 5629573 |
Spray cooled condenser for an integral heat pipe shaft in high power motors and generators |
May 13, 1997 |
| A new system for removing heat energy from the rotor of a rotating electrical machine is disclosed. Rotating electrical machines include electric motors, electric generators and the like. The cooling system includes the prior art components of an integral heat pipe rotor shaft, that |
| 5628882 |
Method for sputter deposition of a chromium, carbon and fluorine crystalline films |
May 13, 1997 |
| System and method for plasma-assisted deposition of optically transparent, crystalline chromium/carbon/fluorine films are described using a chromium metal source and an argon/fluorocarbon plasma. The films were optically transparent to the unaided eye. Characterization of the material by |
| 5623266 |
Contiguous subcarrier barrage jamming method and apparatus |
April 22, 1997 |
| A method and apparatus for providing a radar jamming signal by simultaneously frequency-modulating a voltage-tunable oscillator with a large-amplitude, periodic, sawtooth waveform and a small-amplitude random waveform. The periodic, sawtooth modulation produces a series of radio freq |
| 5622668 |
Method for preparing oriented polymer structures and said structures |
April 22, 1997 |
| A system for preparing oriented block copolymer structures includes a copolymer solution, a device capable of providing a flow field and an evaporation device. The device can be at least two cylinders that are parallel and adjacent to one another to form a nip and a driving mechanism |
| 5621238 |
Narrow band semiconductor detector |
April 15, 1997 |
| A semiconductor based radiation detector utilizing a dual absorption layer system design to selectively respond to particular bands of incident radiation while rejecting others. Generally, a top absorption layer initially absorbs all radiation less than a cutoff wavelength. Radiation |
| 5617233 |
Transparent optical node structure |
April 1, 1997 |
| A transparent optical node (TON) structure for use in a two-connected optical packet switching architecture. The TON is used in an interconnect employing deflection routing with two wavelength signaling where the data information of the packet resides on one wavelength .lambda..sub.1 and |
| 5616882 |
High energy rocket propellant |
April 1, 1997 |
| A rocket propellant of improved Isp and thrust is provided by modifying a rocket fuel of RP-1 (a kerosene fraction). Such fuel is combined with an oxidizer (e.g. liquid oxygen, LOX) which defines a rocket propellant of the prior art. Such propellant is modified per the invention by addit |
| 5616765 |
Method for the preparation of 4-hydroxy-and 4-trimethylsiloxybenzocyclobutene |
April 1, 1997 |
| 4-Hydroxybenzocyclobutene is prepared by the demethylation of 4-methoxybenzocyclobutene in the presence of aluminum iodide. A new compound 4-trimethylsiloxybenzocyclobutene is prepared by reacting 4-hydroxybenzocyclobutene with chlorotrimethylsilane. |
| 5614834 |
Sampling receivers |
March 25, 1997 |
| A Golay sampling receiver is used for optical sampling of voltage and charge at the internal nodes of analog and digital integrated circuits. The sampling receiver uses very high sampling rates together with narrow banding to recover very small signals in the presence of noise. The s |
| 5614671 |
Humidity sensing apparatus and method |
March 25, 1997 |
| The present invention is a humidity sensor which can be used in a radiosonde. The humidity sensor includes a heat sink attached to the radiosonde, a Peltier cooler attached to the heat sink, a carbon element with a thermistor attached therein or thereon, and a control means. The resi |
| 5612887 |
Automation of pulsed laser deposition |
March 18, 1997 |
| The Pulsed Laser Deposition (PLD) growth process uses a target of a given material and a substrate located within a vacuum chamber. A UV laser beam scans the target to produce a plasma which coats the substrate. Sensors for the vacuum chamber, with a data acquisition channel, are coupled |
| 5612812 |
Method and apparatus for photorefractive pirouette display and processing of analog signals |
March 18, 1997 |
| A photorefractive pirouette display device can produce the sonogram of speech sounds by incorporating the short-time Fourier spectrum of speech waves as the input. The device requires a coherent source of optical radiation which can be obtained for a variety of different lasers. A ph |
| 5610265 |
Armomatic polyimides derived from 2-(N-benzoylimino)-4,4-diaminobiphenyl |
March 11, 1997 |
| A rigid-rod aromatic polyimide having repeating units of the formula: ##STR1## |
| 5610261 |
Adamantane based three-dimensional rigid-rod polymers |
March 11, 1997 |
| High compressive strength, three-dimensional para-oriented benzobisoxazole polymers of the formula: ##STR1## wherein Q is ##STR2## and wherein Z represents repeating units of the formula: ##STR3## |
| 5608843 |
Learning controller with advantage updating algorithm |
March 4, 1997 |
| A new algorithm for reinforcement learning, advantage updating, is proposed. Advantage updating is a direct learning technique; it does not require a model to be given or learned. It is incremental, requiring only a constant amount of calculation per time step, independent of the number |
| 5608213 |
Spectral distribution emulation |
March 4, 1997 |
| A test arrangement for assessing the spectral energy distribution-determined response of a night vision device or other electro-optical apparatus. The test arrangement provides a library of spectral energy-distributed test signals or input scenes which may be selected to represent fo |
| 5607403 |
Disposable needlecap holder |
March 4, 1997 |
| A new disposable needlecap holder for safe, one-handed recapping of hypodermic syringe needles is disclosed. The needlecap holder is a generally rectangular solid having a back face with an adhesive surface so that the solid can be attached to a horizontal or vertical surface, such a |
| 5604642 |
Laser welding of light-weight honeycomb mirrors |
February 18, 1997 |
| The invention provides method and apparatus for making light-weight honeycomb mirrors by assembling fused quartz ribs in a honeycomb pattern so that rib ends are proximate other rib ends to form rib junctions. A laser beam is then directed at the rib junctions to weld the rib ends to |
| 5604634 |
All optical nonlinear joint fourier transform correlator |
February 18, 1997 |
| A fully parallel, self-aligning, nonlinear and all optical joint transform correlator utilizes a photorefractive four wave mixer positioned to record the joint transform spectrum interfering with a reference beam together with a phase conjugator which directs a readout beam at the four w |
| 5604431 |
Integrated grid particle impact detector |
February 18, 1997 |
| The Integrated Grid Particle Impact Detector (IGMID) uses an integrated semiconductor grid system to detect hypervelocity article impacts on space vehicles and to indirectly determine article diameter of impacting particles. The detector consists of multiple sets of parallel aluminum |
| 5602387 |
Method of protecting an RF receiver in a hostile electromagnetic environment |
February 11, 1997 |
| A photonic electro-optic field sensor is positioned adjacent a metallic antenna. Polarized light is passed through the field sensor, and the degree of rotation thereof is proportional to the strength of the RF signal sensed by the antenna. The resulting modulated light signal is tran |
| 5601687 |
Mask design |
February 11, 1997 |
| A device and a method to minimize leakage current between adjacent sections of a semiconductor device, while minimizing topographic variations. The device has an etched shape of a diamond, with an unetched "moat" in its center. While any type of etch will work, wet etching is usually use |
| 5601402 |
Turbo machine shroud-to-rotor blade dynamic clearance control |
February 11, 1997 |
| A clearance control arrangement for the rotor blade-to-stator shroud clearance in an aircraft engine or other turbo machine. The disclosed arrangements use large area piston-like structures located circumferential to the turbo machine and capable of operation from pressures developed |
| 5594586 |
Photorefractive limiting quadratic processor |
January 14, 1997 |
| Limiting quadratic processing and compansion in photorefractive two beam coupling is disclosed. Two-beam coupling in photorefractive barium titanate employs the imaged intensity of the signal to amplify the reference beam while maintaining the phase of the reference beam. The phase d |
| 5594262 |
Elevated temperature gallium arsenide field effect transistor with aluminum arsenide to aluminum |
January 14, 1997 |
| The incorporation of an aluminum arsenide (AlAs) buffer layer in a gallium arsenide (GaAs) field effect transistor (FET) structure is found to improve the overall device performance, particularly in the high temperature operating regime. Similar characteristics may be obtained from d |
| 5594075 |
Acetylenic heterocyclic nonlinear optical thermoset monomers |
January 14, 1997 |
| The compound 2-ethynyl-5-(4-pyridyl)ethynyl thiophene: ##STR1## when incorporated into a thermoplastic polymer having repeating units of the formula: ##STR2## wherein X is --O-- or --S--, and R is selected from the group consisting of: ##STR3## and Ar is selected from |
| 5592850 |
Missile guidance seeker and seeker missile countermeasures system testing appartatus with co-loc |
January 14, 1997 |
| A test system for evaluating the performance of a seeking missile's guidance system under realistic but laboratory-controlled conditions wherein the guidance system is segregated from an actual missile but used to control a multiple degrees of freedom seeker capturing apparatus. The |
| 5589291 |
Stabilized rechargeable cell in MSE |
December 31, 1996 |
| Method is provided for preparing a stabilized rechargeable cell having a negative electrode and a molten salt electrolyte (MSE) while avoiding problems of chloroaluminate cell systems which are not air stable. The cell of the present invention thus employs an LiBF.sub.4 /EMI.sub.BF4 MSE |
| 5585999 |
Supercapacitor electrochemical cell |
December 17, 1996 |
| The present invention provides a thin-film palladium electrode as a reversible redox-active positive electrode in a supercapacitor configuration. A room-temperature chloroaluminate molten salt composed of an organic chloride, mixed with a molar excess of aluminum chloride, is used as |
| 5582649 |
Wafer transfer apparatus for use in a film deposition furnace |
December 10, 1996 |
| A boat, carrying wafers to be processed, is pushed into a furnace by a substantially elongated and cantilevered actuator arm having a lug that pushes by first rotating the arm, to cause the lug to traverse a vertical rod attached to against a plate affixed to the boat. The boat is later |
| 5578148 |
Method to produce high temperature oxidation resistant metal matrix composites by fiber diameter |
November 26, 1996 |
| A method to produce high temperature oxidation resistant metal matrix composites by fiber diameter grading which comprises the steps of (a) laying up an alloy/fiber preform consisting of a plurality of alternating layers of metal alloy and fibers and (b) consolidating the preform under |
| 5575441 |
Fuel liquid/vapor vent containment/recovery system |
November 19, 1996 |
| The present invention provides a device for preventing the venting of fuel vapor to the atmosphere and liquid fuel spillage on military aircraft having vent/dump outlets thereon. On the F-15 fighter aircraft, for example, a dump mast is located on the trailing edge of a wing. The dump |
| 5574824 |
Analysis/synthesis-based microphone array speech enhancer with variable signal distortion |
November 12, 1996 |
| A microphone array speech enhancement algorithm based on analysis/synthesis filtering that allows for variable signal distortion. The algorithm is used to suppress additive noise and interference. The processing structure consists of delaying the received signals so that the desired sign |
| 5574553 |
Ladar receiver incorporating an optical amplifier and polarization optical mixer |
November 12, 1996 |
| To greatly increase the sensitivity of a Heterodyne Ladar System, the receiver incorporates an optical preamplifier to amplify the ladar return signal prior to detection. This results in an increase in return signal power on the order of 25 dB. Spontaneous emission noise added by the fib |
| 5567995 |
Multi winding spiral generator |
October 22, 1996 |
| A multiwinding spiral generator is capable of delivering any predetermined amount of energy at any predetermined voltage. The multiple spiral combines three components into a single component. The multiple spiral functions as the primary low voltage energy store, the voltage step-up |
| 5567937 |
Night vision device wavelength test pattern |
October 22, 1996 |
| A night vision device test arrangement for determination of spectral sensitivity field of view and other operating characteristics of night vision devices. The test arrangement includes a controllable array of radiant energy emitters such as narrow-band light emitting diode elements |
| 5567935 |
Velocity selected laser ablation metal atom source |
October 22, 1996 |
| A pulsed plume of laser ablated photo-ionizable material is emitted from a target in a vacuum, and a pulsed beam of light thereafter produces ionization of two plume sections straddling a central nonionized plume portion. A mask is provided, intermediate the plume and the laser gener |
| 5566130 |
Address transition detection (ATD) circuit for asynchronous VLSI chips |
October 15, 1996 |
| A logic filtered address transition detection circuit that receives a chip select signal and an ATD pulse, and which produces an internal clock pulse using:an AND gate, a filtered input terminal, a delay unit and a comparator unit. The AND gate outputs an AND logic signal after processin |
| 5558729 |
Method to produce gamma titanium aluminide articles having improved properties |
September 24, 1996 |
| Gamma titanium aluminide alloys having the composition Ti--(45.5-47.5)Al--(0-3.0)X--(1-5)Y--(0.05-1.0)W, where X is Cr, Mn or any combination thereof, and Y is Nb, Ta or any combination thereof (at %), are treated to provide specific microstructures. To obtain duplex microstructures, |
| 5557932 |
Low thermal stress impingement cooling apparatus |
September 24, 1996 |
| An impingement cooling arrangement which avoids thermal cycling fatigue failures in the cooled member and cooling baffle member while retaining permanent rigid attachment of the cooling baffle member and cooled members at their periphery. The baffle includes an array of stress relieving |
| 5557699 |
Nlo waveguide "and" switch and method therefor |
September 17, 1996 |
| Method and apparatus are provided for NLO switching by first providing a phase-matched SHG grating which outputs a reinforced SHG beam only when two input beams of frequency (.omega.) are present in two modes of such wg. The so encoded NLO switch is operated by directing at least two inp |
