| Patent Number |
Title Of Patent |
Date Issued |
| 5576249 |
Electrochemically etched multilayer semiconductor structures |
November 19, 1996 |
| An electrochemical method is disclosed for selectively etching either n-type or p-type semiconductor material in the presence of the other type. A liquid electrolyte is prepared in which the etching reaction is based on hole transport. In selectively etching p-type material the holes are |
| 5575959 |
Process for making low cost infrared windows |
November 19, 1996 |
| Low cost broadband infrared windows are fabricated using a near net shape process which greatly reduces the cost of machining and grinding window materials. The fabrication of zinc sulfide (ZnS) IR windows uses ceramic powder processing to avoid the expensive prior art chemical vapor |
| 5575956 |
Room-temperature stable, one-component, electrically-conductive, flexible epoxy adhesives |
November 19, 1996 |
| A flexible electrically-conductive epoxy-based adhesive composition and method for making the same are provided. The present adhesive composition comprises: (a) a polymer mixture comprising at least one polyepoxide resin having a hardness not exceeding a durometer Shore A reading of 45, |
| 5575664 |
Ball contact rotary connector |
November 19, 1996 |
| A rotary connector employing rolling conductive members. Two or more electrically isolated assemblies comprising pairs of primed wiring boards or flexprint circuits are disposed in a housing. The printed wiring boards have conductors disposed on adjacent surfaces. The conductors are |
| 5575417 |
Solid state microwave integrated circuit RF insulator-encapsulated contact installation and remo |
November 19, 1996 |
| Apparatus and processes for desoldering and soldering an insulator-encapsulated contact using a focused heat source and thermal choke in the form of a soldering iron tip and a contact moat. The desoldering and removal process includes the following steps. Securing the housing to mini |
| 5574580 |
LCD with integral light confinement having a pair of afocal lenslets positioned between liquid c |
November 12, 1996 |
| Telecentric afocal microlens combinations are inserted between the liquid crystal cells of an active matrix liquid crystal subtractive color display to retain light within a projection of each liquid crystal pixel as the light propagates through the system. A resulting reduction in light |
| 5572407 |
Apparatus for interconnecting an integrated circuit device to a multilayer printed wiring board |
November 5, 1996 |
| Apparatus for interconnecting an integrated circuit device, such as an infrared device, having a plurality of leads to a multilayer printed wiring board having a plurality of interconnects. The apparatus comprises a flexprint circuit having a plurality of interconnects that are confi |
| 5572220 |
Technique to detect angle of arrival with low ambiguity |
November 5, 1996 |
| An angle-of-arrival (AOA) phase unwrapping technique using a trellis search to determine the correct AOA. An antenna array having several elements arranged to establish several baselines (element spacings) between different pairs of elements receives RF signals, ranging from 1/2 .lambda. |
| 5572049 |
Multi-layer collector heterojunction transistor |
November 5, 1996 |
| A multi-layer collector heterojunction transistor (10) provides for high power, high efficiency transistor amplifier operation, especially in the RF (radio frequency) range of operation. A larger band gap first collector layer (12), approximately 15% of the active collector region (11) |
| 5570529 |
Torque-limiting weapon mount and weapon system utilizing the mount |
November 5, 1996 |
| A sight is affixed to a rail on a receiver of a weapon by a torque-limiting weapon mount. Force is applied to clamp the sight to the rail by the relative movement of two inclined ramps, one on a rotating knob and the other on a nut whose turning generates the clamping force. The torque, |
| 5570068 |
Coaxial-to-coplanar-waveguide transmission line connector using integrated slabline transition |
October 29, 1996 |
| A coaxial-to-coplanar-waveguide connector that incorporates a slabline section within the coaxial connector interface between a circular-coaxial-transmission-line-to-coplanar-waveguide transmission line. As RF energy enters a circular coaxial input, the slabline section shapes the el |
| 5569493 |
Preparation of cured cyanate ester resins and composites for metal plating |
October 29, 1996 |
| A method is provided for preparing the surface of a cured cyanate ester resin or composite for metal plating. The composite may comprise graphite fibers embedded in a cured cyanate ester resin matrix The surface is treated with a preheated solution containing an alkali metal salt of an |
| 5568682 |
Orthogonal grid circuit interconnect method |
October 29, 1996 |
| Methods for making low cost, high density circuits for multichip modules using a two-layer interconnect pattern. The circuit is comprised of parallel line segments on each side of the dielectric film, orthogonal to each other to form a mesh or grid when viewed through the film. Line |
| 5568394 |
Interferometry with multipath nulling |
October 22, 1996 |
| A processing method that processes interferometer data to provide for rejection of multipath signal returns from an emitter and computes an improved estimate of the relative angle between the emitter and an interferometer. The present processing method comprises the following steps. |
| 5568356 |
Stacked module assembly including electrically interconnected switching module and plural electr |
October 22, 1996 |
| A system of modules is provided in which each module has a set of n connectors which are spatially invariant as the module is rotated in steps of 360/n degrees about a module axis. The connectors are configured for axial engagement and a switching one of the modules includes a switch tha |
| 5568309 |
System and method for amplification and wavefront compensation of depolarized optical beams |
October 22, 1996 |
| An optical amplification system and method that allows an optical seed beam to pass through an optical amplifier more than two times, even when the seed beam is highly depolarized. This is accomplished by using a polarizing beamsplitter that separates a highly depolarized seed beam into |
| 5568124 |
Method to detect penetration of a surface and apparatus implementing same |
October 22, 1996 |
| Apparatus and method for detecting unauthorized disturbance of a protected surface, includes a substrate adapted to conformably encase and adhere to the surface that is to be protected. A plurality of layers, each comprising a plurality of frangible conduits is embedded in the substrate |
| 5568069 |
High speed, low power pipelined logic circuit |
October 22, 1996 |
| A complementary pipelined logic circuit includes (a) a logic unit that processes a plurality of complementary inputs into a pair of complementary outputs, (b) a load circuit that is connected to a voltage supply node to establish complementary outputs having a voltage swing greater than |
| 5566909 |
System and method for deploying multiple probes |
October 22, 1996 |
| Systems and methods that employ a spin-stabilized spacecraft in combination with a support and deployment module to carry a plurality of probes containing scientific instruments that are to enter a planet's atmosphere and/or are to be landed on a planet that is to be explored. The spacec |
| 5566900 |
Cable takeup/payout system for a multi-rotation assembly |
October 22, 1996 |
| A cable connection/dispensing system for a multi-rotation assembly includes a hollow cylindrical housing and an elongated central hub centered within the housing. The hub has a cardioid cross-sectional shape with two lobes and an acute cusp therebetween. At least one of the housing and t |
| 5565803 |
Digital input threshold switching circuit |
October 15, 1996 |
| A digital input circuit including a first digital buffer for receiving a digital data signal and for providing a first buffered digital data output, the first digital buffer having a first switching threshold voltage; a second digital buffer for receiving the digital data signal and |
| 5563905 |
Network communication system having time-sliced protocol |
October 8, 1996 |
| A system for communicating signals within a digital network without the aid of an array of separate signal lines or of the system data bus. The network communication system 10 of the present invention is operative in accordance with a time-sliced protocol to communicate signal informatio |
| 5563794 |
Repetitive control of thermal shock disturbance |
October 8, 1996 |
| A control system (40) and procedure (50) that uses repetitive control to control repetitive error sources such as result from the phenomenon of thermal shock experienced by a spacecraft (10). Repetitive control is a "learning algorithm" that substantially eliminates errors in a stable |
| 5563573 |
Pseudo-random switched resistor |
October 8, 1996 |
| A pseudo-random switched resistor for emulating a relatively high input impedance. The switched resistor comprises a relatively low value resistor, a semiconductor switch coupled to the resistor, and a pseudo-random pulse generator coupled to the switch for controlling the on time of |
| 5563521 |
Membrane connector with stretch induced micro scrub |
October 8, 1996 |
| A membrane connector or test probe having a group of connector or test probe contacts (14) in a central contact section of the membrane (12) is initially stretched by being axially displaced from the plane of the peripheral membrane support (10). The test probe is cause to contact the |
| 5563507 |
Method of testing the interconnection between logic devices |
October 8, 1996 |
| A test circuit for testing interconnections to a non-scannable digital device of a multiple device circuit disposed on an interconnecting substrate. The test circuit includes a current detecting circuit switchably connected between first and second power supply bias nodes of the digi |
| 5563423 |
Dark current-free multiquantum well superlattice infrared detector |
October 8, 1996 |
| An improved multiquantum well superlattice photodetector (10) for detecting long wavelength infrared radiation. Electron transport in a first excited energy state is enhanced in barrier layers (20) of the superlattice (16) by lowering the potential energy barriers of the barrier layers ( |
| 5561527 |
Optical sensing apparatus for CO.sub.2 jet spray devices |
October 1, 1996 |
| Optical sensing apparatus for use with a CO.sub.2 jet spray nozzle that sprays a plume. The apparatus comprises a coherent light source that provides a light beam. A photodiode is disposed such that it detects the light beam emitted by the coherent light source that passes through the |
| 5561405 |
Vertical grounded coplanar waveguide H-bend interconnection apparatus |
October 1, 1996 |
| Interconnection apparatus providing a right angle H-plane bend in grounded coplanar waveguide (GCPW) transmission line media. Respective first and second GCPW lines include a dielectric substrate, on which is formed on a bottom surface a bottom conductive ground plane, and on a top surfa |
| 5561298 |
Destruction of contaminants using a low-energy electron beam |
October 1, 1996 |
| Contaminant levels in a fluid such as air or water are reduced by producing a pulsed electron beam having an average primary electron energy of from about 90 to about 110 thousand electron volts (corresponding to an average injected electron energy of from about 45 to about 55 thousand e |
| 5559695 |
Apparatus and method for self-calibrating visual time-to-contact sensor |
September 24, 1996 |
| The invention relates to a method and a self-calibrating visual time-to-contact (TTC) sensor for a mobile manned or autonomous unmanned vehicle which operates in a high speed manner and which permits the continuous, adaptive motion of the vehicle through the vehicle's environment. Mo |
| 5559671 |
BI-directional shock isolation mounting system and method |
September 24, 1996 |
| An apparatus shock isolation mounting system includes an apparatus, a base, and an apparatus chassis that carries the apparatus and is vertically slidable with respect to the base. A pair of oppositely disposed, self-centering preloaded springs with internal guide rods are attached b |
| 5558730 |
Vehicle wheel including self-inflating tire pump |
September 24, 1996 |
| A self-inflating tire pump is integrally fixed to a wheel of a vehicle for automatically pumping air into an inflation region of a tire which is mounted on the wheel. The pump includes a piston which is movable radially outward in a cylinder by centrifugal force to draw air from the atmo |
| 5557657 |
Handoff between overlay and underlay cells |
September 17, 1996 |
| A mechanism for handing off between an overlay cell (48) and an underlay cell (50). The underlay cell (50) is smaller than and has a common area with the overlay cell. A threshold level (RSSI-THP) is established which corresponds to the sum of a nominal threshold level (RSSI-U) and a val |
| 5557624 |
Laser system using U-doped crystal Q-switch |
September 17, 1996 |
| A laser system includes a laser resonator cavity having a resonant axis and an Er:glass, Er:YAG, or other lasing element with an output of from about 1.4 to about 1.65 micrometers within the laser resonator cavity. A flash lamp optically pumps the lasing element to emit light. A Q-switch |
| 5557431 |
Real-time compensated imaging system and method using a double-pumped phase-conjugate mirror |
September 17, 1996 |
| An adaptive optics imaging system uses a double pumped phase conjugate mirror (DPCM) to compensate for phase, amplitude or polarization aberrations imposed upon a multi-pixel object beam. A remote reference beam is used to sample an aberrating medium through which the object beam is |
| 5557298 |
Method for specifying a video window's boundary coordinates to partition a video signal and comp |
September 17, 1996 |
| A method for specifying a video window's boundary coordinates directly from a multi-color video signal to separate the signals high and low variance components. The method converts the analog multi-color video signal into respective color sequences of digital frames and transforms them i |
| 5557291 |
Multiband, phased-array antenna with interleaved tapered-element and waveguide radiators |
September 17, 1996 |
| A multiband phased-array antenna interleaves tapered-element radiators with waveguide radiator to facilitate the simultaneous radiation of antenna beams across a bandwidth in excess of two octaves. The launch ends of the waveguide radiators collectively define a ground plane. The tap |
| 5557140 |
Process tolerant, high-voltage, bi-level capacitance varactor diode |
September 17, 1996 |
| A doping profile is disclosed for realizing a varactor diode that exhibits a high breakdown voltage V.sub.BR, e.g.,>100 volts, and a capacitance which has a bi-level characteristic. In particular, the capacitance has a C.sub.max level and a C.sub.min level. The doping profile includes |
| 5556797 |
Method of fabricating a self-aligned double recess gate profile |
September 17, 1996 |
| A method of fabricating a self-aligned double gate recess profile in a semiconductor substrate is disclosed in which a first mask layer is formed over the substrate. A second mask layer having an opening is formed over the first mask layer. An opening at least as wide as the second mask |
| 5555428 |
Activity masking with mask context of SIMD processors |
September 10, 1996 |
| Disclosed is a masking technique for a SIMD processor (10) which is capable of masking a plurality of individual machine operations within a single instruction incorporating a plurality of operations. To accomplish this each different machine operation within the instruction includes a n |
| 5555336 |
Fiber optic ower distribution |
September 10, 1996 |
| A fiber optic assembly including an elongated light guiding optical fiber strand, a first conductive layer coated around the elongated light guiding optical fiber strand, an elongated glass capillary surrounding the elongated light conveying optical fiber strand and the conductive coatin |
| 5555035 |
Very high resolution light valve writing system based on tilting lower resolution flat panels |
September 10, 1996 |
| Projection apparatus comprising high resolution projection display systems that generate a relatively large high resolution image on a display screen, wherein seams and tiling artifacts in observation (image) space are eliminated or minimized. The projection apparatus comprises an image |
| 5554997 |
Graphite composite structures exhibiting electrical conductivity |
September 10, 1996 |
| Continuous, elongated nickel plated graphite fibers are bound with an epoxy and are formed into a structural shape (11). An area (13) of the epoxy is removed by bead blasting to expose a layer of the plated graphite fibers (14), which are aligned in the desired direction of radio frequen |
| 5554884 |
Multilevel metallization process for use in fabricating microelectronic devices |
September 10, 1996 |
| A multilevel metallization is deposited on a microelectronic device base structure (40). The process includes depositing a glassy dielectric layer (48) of a thickness that is from about two to about three times as thick as the topography thickness (D) of the base structure (40). The glas |
| 5554865 |
Integrated transmit/receive switch/low noise amplifier with dissimilar semiconductor devices |
September 10, 1996 |
| A T/R switch/LNA for a radar's active array antenna includes dissimilar semiconductor devices in a monolithic microwave integrated circuit (MMIC). The devices are selected to best meet the functional requirements of the T/R switch/LNA. In particular, the LNA is realized with a HEMT and t |
| 5554847 |
Flexibly connectable high precision thermal and structural focal plane array mount |
September 10, 1996 |
| An assembly for mounting a focal plane array. The assembly includes a fixture of thermally conductive material having a first substantially planar surface and a second surface. The fixture is attached to the focal plane array at the first surface and to a frame of a housing at the second |
| 5554411 |
Treatment of solid electrolytes to promote wettability |
September 10, 1996 |
| A beta-double prime aluminum oxide solid electrolyte (24) is prepared for wetting by a liquid electrode material. The method includes mechanically rubbing an asperity-filling metal against the surface (32) of the solid electrolyte (24) until the solid electrolyte (24) turns gray in color |
| 5553617 |
Noninvasive method and apparatus for determining body chemistry |
September 10, 1996 |
| The body chemistry of a person is determined by directing a beam of light into the eye of the person, measuring the spectral response of the eye to the beam of light, comparing the measured spectral response to a standard spectral response, and forming a conclusion as to the chemistry of |
| 5553395 |
Bubbler for solid metal organic source material and method of producing saturated carrying gas |
September 10, 1996 |
| A cone-shaped bubbler for use with solid metal organic source material used in metal organic chemical vapor phase deposition systems, and a method of producing carrying gas saturated with source material that is injected into such systems. The bubbler comprises a sealed container having |
