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| Number | Title | Issue Date |
| 7729740 | Noise cancellation in magnetoencephalography and electroencephalography with isolated reference sensors An apparatus measures electromagnetic signals from a weak signal source. A plurality of primary sensors is placed in functional proximity to the weak signal source with an electromagnetic field isolation surface arranged adjacent the primary sensors and between the ... | 06/01/2010 |
| 7408235 | Quantum coherent switch utilizing commensurate nanoelectrode and charge density periodicities A quantum coherent switch having a substrate formed from a density wave (DW) material capable of having a periodic electron density modulation or spin density modulation, a dielectric layer formed onto a surface of the substrate that is orthogonal to an intrinsic wa... | 08/05/2008 |
| 7319677 | Network topology mapper A method enables the topology of an acyclic fully propagated network to be discovered. A list of switches that comprise the network is formed and the MAC address cache for each one of the switches is determined. For each pair of switches, from the MAC address caches... | 01/15/2008 |
| 7264700 | Thin film mixed potential sensors A mixed potential sensor for oxidizable or reducible gases and a method of making. A substrate is provided and two electrodes are formed on a first surface of the substrate, each electrode being formed of a different catalytic material selected to produce a differen... | 09/04/2007 |
| 7214333 | Electrodes for solid state gas sensor A mixed potential electrochemical sensor for the detection of gases has a ceria-based electrolyte with a surface for exposing to the gases to be detected, and with a reference wire electrode and a sensing wire electrode extending through the surface and fixed within... | 05/08/2007 |
| 7202036 | Quenching methods for background reduction in luminescence-based probe-target binding assays Background luminescence is reduced from a solution containing unbound luminescent probes, each having a first molecule that attaches to a target molecule and having an attached luminescent moiety, and luminescent probe/target adducts. Quenching capture reagent molec... | 04/10/2007 |
| 7167808 | Statistical density modification using local pattern matching A computer implemented method modifies an experimental electron density map. A set of selected known experimental and model electron density maps is provided and standard templates of electron density are created from the selected experimental and model electron den... | 01/23/2007 |
| 7153656 | Nucleic acid sequence detection using multiplexed oligonucleotide PCR Methods for rapidly detecting single or multiple sequence alleles in a sample nucleic acid are described. Provided are all of the oligonucleotide pairs capable of annealing specifically to a target allele and discriminating among possible sequences thereof, and liga... | 12/26/2006 |
| 7127104 | Vectorized image segmentation via trixel agglomeration A computer implemented method transforms an image comprised of pixels into a vectorized image specified by a plurality of polygons that can be subsequently used to aid in image processing and understanding. The pixelated image is processed to extract edge pixels tha... | 10/24/2006 |
| 7101635 | Methanol-tolerant cathode catalyst composite for direct methanol fuel cells A direct methanol fuel cell (DMFC) having a methanol fuel supply, oxidant supply, and its membrane electrode assembly (MEA) formed of an anode electrode and a cathode electrode with a membrane therebetween, a methanol oxidation catalyst adjacent the anode electrode ... | 09/05/2006 |
| 7085653 | Method for removing atomic-model bias in macromolecular crystallography Structure factor bias in an electron density map for an unknown crystallographic structure is minimized by using information in a first electron density map to elicit expected structure factor information. Observed structure factor amplitudes are combined with a sta... | 08/01/2006 |
| 7079924 | Vision-based obstacle avoidance A method for allowing a robot to avoid objects along a programmed path: first, a field of view for an electronic imager of the robot is established along a path where the electronic imager obtains the object location information within the field of view; second, a p... | 07/18/2006 |
| 7014931 | Methanol-tolerant cathode catalyst composite for direct methanol fuel cells A direct methanol fuel cell (DMFC) having a methanol fuel supply, oxidant supply, and its membrane electrode assembly (MEA) formed of an anode electrode and a cathode electrode with a membrane therebetween, a methanol oxidation catalyst adjacent the anode electrode ... | 03/21/2006 |
| 6993764 | Buffered coscheduling for parallel programming and enhanced fault tolerance A computer implemented method schedules processor jobs on a network of parallel machine processors or distributed system processors. Control information communications generated by each process performed by each processor during a defined time interval is accumulate... | 01/31/2006 |
| 6986961 | Fuel cell stack with passive air supply A fuel cell stack has a plurality of polymer electrolyte fuel cells (PEFCs) where each PEFC includes a rectangular membrane electrode assembly (MEA) having a fuel flow field along a first axis and an air flow field along a second axis perpendicular to the first axis... | 01/17/2006 |
| 6962760 | Methods of conditioning direct methanol fuel cells Methods for conditioning the membrane electrode assembly of a direct methanol fuel cell (“DMFC”) are disclosed. In a first method, an electrical current of polarity opposite to that used in a functioning direct methanol fuel cell is passed through the anode surf... | 11/08/2005 |
| 6937765 | Method for contour extraction for object representation Contours are extracted for representing a pixelated object in a background pixel field. An object pixel is located that is the start of a new contour for the object and identifying that pixel as the first pixel of the new contour. A first contour point is then locat... | 08/30/2005 |
| 6931329 | Likelihood-based modification of experimental crystal structure electron density maps A maximum-likelihood method for improves an electron density map of an experimental crystal structure. A likelihood of a set of structure factors {Fh} is formed for the experimental crystal structure as (1) the likelihood of having obtained an observed se... | 08/16/2005 |
| 6901308 | System level analysis and control of manufacturing process variation A computer-implemented method is implemented for determining the variability of a manufacturing system having a plurality of subsystems. Each subsystem of the plurality of subsystems is characterized by signal factors, noise factors, control factors, and an output r... | 05/31/2005 |
| 6818341 | Fuel cell anode configuration for CO tolerance A polymer electrolyte fuel cell (PEFC) is designed to operate on a reformate fuel stream containing oxygen and diluted hydrogen fuel with CO impurities. A polymer electrolyte membrane has an electrocatalytic surface formed from an electrocatalyst mixed with the poly... | 11/16/2004 |
| 6808838 | Direct methanol fuel cell and system A fuel cell having an anode and a cathode and a polymer electrolyte membrane located between anode and cathode gas diffusion backings uses a methanol vapor fuel supply. A permeable polymer electrolyte membrane having a permeability effective to sustain a carbon diox... | 10/26/2004 |
| 6782295 | Optimizing the availability of a buffered industrial process A computer-implemented process determines optimum configuration parameters for a buffered industrial process. A population size is initialized by randomly selecting a first set of design and operation values associated with subsystems and buffers of the buffered ind... | 08/24/2004 |
| 6754091 | Pulse width modulated push-pull driven parallel resonant converter with active free-wheel An apparatus and method for high frequency alternating power generation to control kilowatts of supplied power in microseconds. The present invention includes a means for energy storage, push-pull switching means, control electronics, transformer means, resonant cir... | 06/22/2004 |
| 6751256 | Transmission of digital images within the NTSC analog format HDTV and NTSC compatible image communication is done in a single NTSC channel bandwidth. Luminance and chrominance image data of a scene to be transmitted is obtained. The image data is quantized and digitally encoded to form digital image data in HDTV transmission ... | 06/15/2004 |
| 6743578 | Method for the detection of specific nucleic acid sequences by polymerase nucleotide incorporation A method for rapid and efficient detection of a target DNA or RNA sequence is provided. A primer having a 3′-hydroxyl group at one end and having a sequence of nucleotides sufficiently homologous with an identifying sequence of nucleotides in the target DNA is sel... | 06/01/2004 |
| 6733569 | Method and apparatus for separating mixtures of gases using an acoustic wave A thermoacoustic device separates a mixture of gases. An elongated duct is provided with first and second ends and has a length that is greater than the wavelength of sound in the mixture of gases at a selected frequency, and a diameter that is greater than a therma... | 05/11/2004 |
| 6721664 | Maximum likelihood density modification by pattern recognition of structural motifs An electron density for a crystallographic structure having protein regions and solvent regions is improved by maximizing the log likelihood of a set of structures factors {Fh} using a local log-likelihood function: LL(ρ(x, {F | 04/13/2004 |
| 6696382 | Catalyst inks and method of application for direct methanol fuel cells Inks are formulated for forming anode and cathode catalyst layers and applied to anode and cathode sides of a membrane for a direct methanol fuel cell. The inks comprise a Pt catalyst for the cathode and a Pt--Ru catalyst for the anode, purified water in ... | 02/24/2004 |
| 6678658 | Speech processing using conditional observable maximum likelihood continuity mapping A computer implemented method enables the recognition of speech and speech characteristics. Parameters are initialized of first probability density functions that map between the symbols in the vocabulary of one or more sequences of speech codes that repr... | 01/13/2004 |
| 6666033 | Method and apparatus for fine tuning an orifice pulse tube refrigerator An orifice pulse tube refrigerator uses flow resistance, compliance, and inertance components connected to a pulse tube for establishing a phase relationship between oscillating pressure and oscillating velocity in the pulse tube. A temperature regulating... | 12/23/2003 |
| 6658862 | Cascaded thermoacoustic devices A thermoacoustic device is formed with a resonator system defining at least one region of high specific acoustic impedance in an acoustic wave within the resonator system. A plurality of thermoacoustic units are cascaded together within the region of high... | 12/09/2003 |
| 6644118 | Cylindrical acoustic levitator/concentrator having non-circular cross-section A low-power, inexpensive acoustic apparatus for levitation and/or concentration of aerosols and small liquid/solid samples having particulates up to several millimeters in diameter in air or other fluids is described. It is constructed from a commercially... | 11/11/2003 |
| 6644028 | Method and apparatus for rapid stopping and starting of a thermoacoustic engine A thermoacoustic engine-driven system with a hot heat exchanger, a regenerator or stack, and an ambient heat exchanger includes a side branch load for rapid stopping and starting, the side branch load being attached to a location in the thermoacoustic sys... | 11/11/2003 |
| 6637211 | Circulating heat exchangers for oscillating wave engines and refrigerators An oscillating-wave engine or refrigerator having a regenerator or a stack in which oscillating flow of a working gas occurs in a direction defined by an axis of a trunk of the engine or refrigerator, incorporates an improved heat exchanger. First and sec... | 10/28/2003 |
| 6635369 | Method for improving fuel cell performance A method is provided for operating a fuel cell at high voltage for sustained periods of time. The cathode is switched to an output load effective to reduce the cell voltage at a pulse width effective to reverse performance degradation from OH adsorption o... | 10/21/2003 |
| 6605202 | Electrodes for solid state gas sensor A mixed potential electrochemical sensor for the detection of gases has a ceria-based electrolyte with a surface for exposing to the gases to be detected, and with a reference wire electrode and a sensing wire electrode extending through the surface and f... | 08/12/2003 |
| 6596422 | Air breathing direct methanol fuel cell A method for activating a membrane electrode assembly for a direct methanol fuel cell is disclosed. The method comprises operating the fuel cell with humidified hydrogen as the fuel followed by running the fuel cell with methanol as the fuel.... | 07/22/2003 |
| 6564552 | Drift stabilizer for reciprocating free-piston devices A free-piston device has a stabilized piston drift. A piston having a frequency of reciprocation over a stroke length and with first and second sides facing first and second variable volumes, respectively, for containing a working fluid defining an acoust... | 05/20/2003 |
| 6560970 | Oscillating side-branch enhancements of thermoacoustic heat exchangers A regenerator-based engine or refrigerator has a regenerator with two ends at two different temperatures, through which a gas oscillates at a first oscillating volumetric flow rate in the direction between the two ends and in which the pressure of the gas... | 05/13/2003 |
| 6529927 | Logarithmic compression methods for spectral data A method is provided for logarithmic compression, transmission, and expansion of spectral data. A log Gabor transformation is made of incoming time series data to output spectral phase and logarithmic magnitude values. The output phase and logarithmic mag... | 03/04/2003 |
