John Hunt
John Hunt, Madison, VA US
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20110098590 | METHODS AND APPARATUSES FOR DETECTING ANALYTES - An apparatus for measuring a quantity of an analyte, such as an aldehyde, contained in a breath sample includes a breath collection device and a measurement device. The breath collection device includes a breath inlet area, a breath outlet area, and a reaction chamber. The reaction chamber can include a reagent that is colorimetrically reactive with one or more aldehydes. The measurement device includes a light emitting device and a light measuring device and is configured to provide a quantitative value indicative of the amount of aldehydes present in the breath sample. | 04-28-2011 |
John Hunt, Cincinnati, OH US
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20090105609 | BIOPSY DEVICE WITH VARIABLE SPEED CUTTER ADVANCE - A biopsy device having a translating and rotating cutter is disclosed. The translational speed of the cutter is varied using a variable pitch member. The variable pitch member can include a shaft having a relatively coarse threaded portion for rapid cutter advance and a relatively finer threaded portion for cutter advance during tissue severing. | 04-23-2009 |
20110077552 | BIOPSY DEVICE WITH VARIABLE SPEED CUTTER ADVANCE - A biopsy device having a translating and rotating cutter is disclosed. The translational speed of the cutter is varied using a variable pitch member. The variable pitch member can include a shaft having a relatively coarse threaded portion for rapid cutter advance and a relatively finer threaded portion for cutter advance during tissue severing. | 03-31-2011 |
20130041284 | BIOPSY DEVICE - A biopsy device having a cannula and a translating and rotating cutter with respect to the cannula is disclosed. The biopsy device may have a programmable memory for use in operating the cutter. The biopsy device may also include a reservoir, and may be functional to provide a flow of pressurized liquid through the cutter. | 02-14-2013 |
John Hunt, Southhampton GB
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20100253349 | PARAMETRIC AMPLIFIER DEVICE - A parametric amplifier device has a two port parametric amplifier, a DC voltage generator and a DC bias regulator. The bias regulator has a voltage regulator, an attenuator and a summer. Output voltages from the regulator and the attenuator are added in the summer. | 10-07-2010 |
John Hunt, Southampton GB
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20100253350 | ANTENNA ASSEMBLY - A wireless magnetic resonance imaging scanner antenna assembly has a radio frequency antenna array having a number of RF antenna rungs, a microwave antenna array having a number of microwave antenna elements, and a number of antenna feeds. The rungs and elements are grouped together in feed subsets, each subset having at least one feed rung, one non-feed rung and associated microwave antenna elements. Signal transfers between a feed rung and a non-feed rung of a subset are made at a point on the feed rung, within a region of minimum potential. | 10-07-2010 |
20100253351 | ANTENNA FEED - A microwave antenna feed has a radio frequency trap and a number of microwave transmission lines. The radio frequency trap has co-planar ground and signal layers mounted on one surface of a substrate. | 10-07-2010 |
20100253354 | UPCONVERTER - An upconverter has a low noise amplifier, a two port mixer and an antenna. The two port mixer comprises a first port to receive from the low noise amplifier an amplified input signal to be upconverted and a second port to receive a local oscillator signal and to output the amplified, upconverted signal at upper and lower sideband frequencies. The low noise amplifier is coupled to the first port; and the antenna is coupled to the second port. | 10-07-2010 |
John Hunt, Westminster, CO US
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20080297907 | Seamless molded reflectant material - A reflector device for reflecting light from an LED and the like is provided. The reflector device comprises a reflectant material and a three-dimensional reflector formed from the reflectant material with the reflector having a top and a base and the reflector being entirely free from seams from the top to the base. | 12-04-2008 |
John Hunt, Knoxville, TN US
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20120194399 | Surface scattering antennas - Surface scattering antennas provide adjustable radiation fields by adjustably coupling scattering elements along a wave-propagating structure. In some approaches, the scattering elements are complementary metamaterial elements. In some approaches, the scattering elements are made adjustable by disposing an electrically adjustable material, such as a liquid crystal, in proximity to the scattering elements. Methods and systems provide control and adjustment of surface scattering antennas for various applications. | 08-02-2012 |
20130335256 | METAMATERIAL DEVICES AND METHODS OF USING THE SAME - Compressive imaging captures images in compressed form, where each sensor does not directly correspond with a pixel, as opposed to standard image capture techniques. This can lead to faster image capture rates due to lower I/O bandwidth requirements, and avoids the need for image compression hardware, as the image is captured in compressed form. Measuring the transformation of an emitted multimodal signal is one method of compressive imaging. Metamaterial antennas and transceivers are well suited for both emitting and receiving multimodal signals, and are thus prime candidates for compressive imaging. | 12-19-2013 |
20150030256 | MULTI-SENSOR COMPRESSIVE IMAGING - Multi-sensor compressive imaging systems can include an imaging component (such an an RF, microwave, or mmW metamaterial surface antenna) and an auxialiary sensing component (such as an EO/IR sensor). In some approaches, the auxiliary sensing component includes a structured light sensor configured to identify the location or posture of an imaging target within a field of view of the imaging component. In some approaches, a reconstructed RF, microwave, or mmW image may be combined with a visual image of a region of interest to provide a multi-spectral representation of the region of interest. | 01-29-2015 |
John Hunt, Durham, NC US
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20120286897 | METAMATERIAL WAVEGUIDE LENS - A metamaterial waveguide structure is disclosed. In some approaches the metamaterial waveguide structure is compressed along an optical axis using transformation optics techniques. An example is a Rotman lens that is compressed by 27 percent along the optical axis while maintaining the beam steering range, gain and side lobe amplitudes over a broad frequency range. In some approaches the metamaterial waveguide structure includes a plurality of complementary metamaterial elements patterned on a conducting surface of the waveguide. | 11-15-2012 |
John Hunt, Fremont, CA US
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20130099116 | Integrated Backscattered Electron Detector with Cathodoluminescence Collection Optics - An apparatus for simultaneous detection of backscattered electrons and photons from a sample. The device includes a direct detection backscattered electron detector and a photon detector. The backscattered electron detector has a reflective surface that reflects photons emitted by the sample onto the photon detector. | 04-25-2013 |
John Hunt, Santa Clarita, CA US
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20130332262 | Internet marketing-advertising reporting (iMar) system - A contextual advertising system depends on embedded decision-influence algorithms to parse the keywords in web-user searches to identify the public search-engine networks best able to respond with the most relevant advertisement results. Marketing managers control which kind of advertisements get automatically selected by planting product/service, price, place and promotion (4P) keywords which correlate to each of the four traditional Marketing Mix categories. Language-independent, proximity pattern matching algorithms are used to increase matching accuracy and customer click-through-rates (CTR) and their ultimate purchase decisions. Each 4P Marketing Mix contextual smart-advertisement can be independently displayed in full, or linked to an existing online advertisement to enhance match accuracy and the CTR. | 12-12-2013 |
John Hunt, Romsey GB
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20140198002 | Dipole Antenna - A dipole antenna, comprising: a dipole arrangement comprising at least a pair of antenna arms, each antenna arm having a feed end and a distal end, the feed ends positioned in proximity to each other; a feed structure, coupled to said dipole arrangement, comprising a balun for providing the antenna with a balanced feed; wherein, each antenna arm comprises: a conductive end plate, located at the distal end of the respective antenna arm; and an inductive coil, located at the feed end of the respective antenna arm. | 07-17-2014 |