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| Number | Title | Issue Date |
| 5559885 | Two stage read-write method for transaction cards A method for providing convenient, secure access to numerous benefits with a single wallet sized card having a high capacity data storage area, preferably an optical stripe, and a lower capacity magnetic storage stripe. The high capacity area is indelibly... | 09/24/1996 |
| 5557163 | Multiple window electron gun providing redundant scan paths for an electron beam An electron beam device having a plurality of individual, electron permeable, gas impermeable windows can produce a broad beam of free electrons. A multiplicity of windows allows each of the windows to be stronger, yet thinner, for greater electron permea... | 09/17/1996 |
| 5554679 | PTC conductive polymer compositions containing high molecular weight polymer materials A conductive polymer composition exhibiting PTC behavior and the method of making the composition are disclosed. The composition includes a particulate conductive filler and a polymeric portion. The polymeric portion contains a volume-expansion-regulating... | 09/10/1996 |
| 5551829 | Notch finder having a flexible alignment rod An orientation apparatus for aligning indexing notches of disk-shaped members, such as semiconductor wafers, includes a flexible alignment rod that imparts rotation of the disk-shaped members until the indexing notches are registered with the alignment ro... | 09/03/1996 |
| 5544184 | Semiconductor illumination system with expansion matched components A semiconductor laser that includes a monolithic submount with a light emitting source aligned along one side thereby defining a radiation path over which the emitted light propagates. The submount includes two notches that flank the light emitting source... | 08/06/1996 |
| 5539571 | Differentially pumped optical amplifer and mopa device An optical amplifier semiconductor device which is differentially pumped and a master oscillator power amplifier (MOPA) device employing such an amplifier. The amplifier allows the light propagating therein to diverge along at least part of its length, an... | 07/23/1996 |
| 5537432 | Wavelength-stabilized, high power semiconductor laser A wavelength-stabilized, semiconductor laser having a light amplifying diode heterostructure with a flared gain region in an external resonant cavity. The flared gain region has a narrow aperture end which may be coupled to a single mode waveguide and a w... | 07/16/1996 |
| 5534123 | Denaturing separation matrix having hydroxyethyl cellulose for nucleic acid electrophoresis A capillary electrophoresis separation matrix for single-stranded nucleic acids, along with methods for using and preparing the matrix, are disclosed. The separation matrix provides denaturing conditions and contains hydroxyethyl cellulose (HEC) in combin... | 07/09/1996 |
| 5530455 | Roller mouse for implementing scrolling in windows applications A computer mouse having a roller which implements a scrolling function for computer programs, particularly those running a windows format. In one embodiment, scrolling is implemented by sending messages to a queue associated with a windows kernel. The ker... | 06/25/1996 |
| 5530709 | Double-clad upconversion fiber laser An upconversion fiber laser with a double-clad fiber is pumped with a laser-diode-based laser pump source, the inner cladding of the fiber forming a low transmission loss waveguide for the pump light. The central core of the fiber is doped with an active ... | 06/25/1996 |
| 5528050 | Compact scan head with multiple scanning modalities A compact, movable scan head having multiple scanning modalities and capable of high speed, high resolution scanning of a variety of samples is disclosed. Stimulation and detection of storage phosphor screens and fluorescent samples are preferably achieve... | 06/18/1996 |
| 5528740 | Conversion of higher resolution images for display on a lower-resolution display device A system for converting a high-resolution bitonal bit map representation of a document to a lower-resolution pixel representation for display. A special subset of the high resolution output is assigned special meanings by codes which are used to produce a... | 06/18/1996 |
| 5526426 | System and method for an efficiently constrained frequency-domain adaptive filter A multi-block frequency-domain adaptive filter in an acoustic echo canceller as applied to a full-duplex speakerphone includes convolving a received reference signal with a linear room model to generate an echo free signal for transmission which, in turn,... | 06/11/1996 |
| 5520244 | Micropost waste heat removal system A cooling device formed in a thermally conductive substrate having a microstructure, such as a plurality of thermally conductive posts spaced apart by dimensions that induce capillary action in a liquid coolant. The posts extend away from the heated regio... | 05/28/1996 |
| 5521777 | Automatic apparatus for selectively sliding a write-protect tab An apparatus for switching a write-protect tab of a computer disk includes a supply hopper for storing a plurality of disks and includes a mechanism for delivering the disks in a one-by-one manner to a switching area. At the switching area, a tungsten car... | 05/28/1996 |
| 5518493 | Automatic rotor identification based on a rotor-transmitted signal A centrifuge system and method includes generating a radio frequency excitation field within a housing containing a rotor of interest. The excitation field may be generated by an exciter coil fixed to the cover of the housing. The rotor includes a locking... | 05/21/1996 |
| 5514269 | Dual separator purification system A dual separator purification system and method for removing particulate as well as ionic contaminants from liquids is disclosed. The present invention is particularly useful in the electrostatic printing industry. The system comprises two disparate separ... | 05/07/1996 |
| 5515391 | Thermally balanced diode laser package A laser diode package incorporating a first laser diode (or diode laser array) for providing a modulated light output and a second laser diode (or diode laser array) with substantially similar thermal operating characteristics which is modulated with a co... | 05/07/1996 |
| 5511840 | Static dissipative coupling of an article-pickup tip to a wand A vacuum-actuated article handling tool includes an electrically conductive wand body that is selectively coupled to a pickup tip by a static dissipative connecting assembly. The connecting assembly preferably includes a rigid, electrically insulative cap... | 04/30/1996 |
| 5509881 | Centrifuge rotor identification and refrigeration control system based on windage A method and system of identifying a rotor of a centrifuge employ an approach that uses two tiers of model selection. Firstly, the moment of inertia of a rotor is calculated for a first measured acceleration. The indication of moment of inertia is utilize... | 04/23/1996 |
| 5508653 | Multi-voltage circuit arrangement and method for accommodating hybrid electronic system requirements A multi-voltage circuit on a semiconductor chip including core circuitry driven by a power supply voltage equal to the voltage of a selected external device operating in connection with the semiconductor chip, and having input/output circuitry in selected... | 04/16/1996 |
| 5502892 | Method of forming a welded encasement for a computer card A method of forming a module includes positioning a circuit card, such as a memory card, between separate frameworks and welding the frameworks together to encase the circuit card. The frameworks are preferably welded using sonic wave energy, thereby furt... | 04/02/1996 |
| 5502551 | Toning shoe employing a bifurcated return port An electrostatic recorder or copier having a toning shoe that includes a plurality of fluid supply channels in a bifurcation means for separating fluids, to avoid back pressure in the toning shoe. The bifurcation means substantially separates a flow of re... | 03/26/1996 |
| 5499261 | Light emitting optical device with on-chip external cavity reflector A semiconductor laser having a light amplifying diode heterostructure with a flared gain region in an external resonant cavity. The flared gain region has a narrow aperture end which may be coupled to a single mode waveguide and a wide output end. A light... | 03/12/1996 |
| 5496255 | Swinging bucket centrifugation rotor with conforming bucket seat A swinging bucket centrifuge rotor having a conforming bucket seat which includes a plurality of cavities evenly spaced about its vertical axis. Each has a seat portion that with an inward profile generally following the profile of a swinging bucket, subj... | 03/05/1996 |
| 5496517 | Laboratory workstation using thermal vaporization control A heated cover for a receptacle containing a vaporizable substance. The cover is heated to a temperature above the temperature of the substance so as to prevent condensation of vapor evaporated from the substance. A device for placing and removing the cov... | 03/05/1996 |
| 5493534 | Remotely re-programmable program memory for a microcontroller A single chip microcontroller has a plurality of I/O ports which communicate directly and indirectly with an electrically programmable and erasable read only memory array used as a program store circuit. The PEROM array provides for fast erasing and repro... | 02/20/1996 |
| 5493533 | Dual differential trans-impedance sense amplifier and method A sense amplifier arrangement having two trans-impedance amplifiers and one precision current inverting amplifier, which receive respective first and second sense currents from core memory and a reference current from a matched reference cell. The current... | 02/20/1996 |
| 5493244 | Breakdown protection circuit using high voltage detection A high voltage circuit includes a first switching device for supplying one of a high voltage (Vpp) and a low voltage (Vcc) to a controlled path that includes a series connection of a control p-channel transistor and a protection p-ch... | 02/20/1996 |
| 5493142 | Input/output transistors with optimized ESD protection An apparatus providing electrostatic discharge (ESD) protection in an input/output transistor. Disposed near the gate and the surface of the substrate is a lightly doped region. A sidewall oxide layer is selectively etched to extend laterally from a gate ... | 02/20/1996 |
| 5488862 | Monolithic silicon rate-gyro with integrated sensors A monolithic single crystal Si rate-gyro consisting of in the preferred embodiment, an outer torsional frame, self resonating with a substantial amplitude, as controlled by a four-terminal piezo torsion sensor, connected to an inner frame by torsional hin... | 02/06/1996 |
| 5489081 | Safety bracket for table top mounting of a centrifuge A bracket for shock mounting of a vibrating or rotating device, such as a centrifuge, to a support surface. The bracket is formed from a plate of stiff material, such as steel, having an expandible deformable section along a lengthwise axis of the plate a... | 02/06/1996 |
| 5488322 | Digital interface circuit with dual switching points for increased speed A buffer, driver, or level-shifting circuit having an input connected to signal inputs of a pair of comparators and an output connected between a pair of pull-up and pull-down transistors controlled by the comparators. A first reference voltage applied to... | 01/30/1996 |
| 5485714 | Disk loader having a side air blast for proper bag presentation A method of loading disks includes first and second air-jet nozzles and a continuous flow of air. The first air jet nozzle is directed into the opening of the flexible bag to initiate opening the bag at a localized region. The continuous flow is designed ... | 01/23/1996 |
| 5484571 | Enhanced fluorescence detection of samples in capillary column A simple device for collecting a greater amount of fluorescent emission from a minute sample in a capillary column. An axially symmetrical paraboloid reflector is implemented to collect fluorescent emission from the capillary column. The reflector also se... | 01/16/1996 |
| 5477704 | Refrigerant cooling assembly for centrifuges An improved configuration of refrigerant tubing and means for attaching the tubing to the centrifuge chamber. The tubing is preformed to provide a flat contact surface against the outside surface of the centrifuge chamber. The centrifuge tubing is tightly... | 12/26/1995 |
| 5472769 | Soft body armor material with enhanced puncture resistance comprising at least one continuous fabric having knit portions and integrally woven hinge portions A soft body armor material with enhanced puncture resistance is fabricated from knitted light weight, durable fibers, such as aramid fibers. The knitted portions are joined by interwoven portions providing an integrally formed hinge-like effect for flexib... | 12/05/1995 |
| 5473500 | Electrostatic discharge circuit for high speed, high voltage circuitry A protection circuit includes a first controlled path for discharging negative ESD pulses introduced at a signal node. The first controlled path is from the signal node to Vcc via the source and drain electrodes of a first transistor. The gate ... | 12/05/1995 |
| 5459325 | High-speed fluorescence scanner A high-speed fluorescence scanner for scanning a sample at equal angles is disclosed. The scanner has most of its optical components, including a light beam source, a detector, and various filters, lenses, and reflectors, in a fixed position, removed from... | 10/17/1995 |
| 5456270 | Cross-cut hairstyling device and method A hairstyling device and method include forming a hollow tubular member that is semi-rigid but that includes opposed first and second circumferential cuts to accommodate flexing of the device. Midpoints of the first circumferential cuts are diametrically ... | 10/10/1995 |
