Patents and Patent Applications from Virginia Tech


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9870531 Analysis system using brokers that access information sources  
Systems, methods, and computer-readable media for generating a data set are provided. One method includes generating a data set based on input data using a plurality of brokers. The method further...
9867652 Irreversible electroporation using tissue vasculature to treat aberrant cell masses or create tissue scaffolds  
The present invention relates to the field of medical treatment of diseases and disorders, as well as the field of biomedical engineering. Embodiments of the invention relate to the delivery of...
9861324 Hybrid detector modules and dynamic thresholding for spectral CT  
A system and method that comprises an X-ray source configured to emit an X-ray beam; an object positioned to receive the X-ray beam; a detector configured to receive an attenuated beam of the...
US20180006644 PARALLEL DEVICES HAVING BALANCED SWITCHING CURRENT AND POWER  
A power circuit includes a power source for providing electrical power and two driving transistors being disposed in parallel and receiving electrical power from the power source. Each of the two...
9855327 Live attenuated chimeric porcine circovirus vaccine  
The present invention provides a novel chimeric porcine circovirus infectious DNA clone and live attenuated chimeric virus with the PCV2, preferably of subtype PCV2b, capsid gene integrated into a...
US20170360326 DEVICES, SYSTEMS, AND METHODS FOR REAL-TIME MONITORING OF ELECTROPHYSICAL EFFECTS DURING TISSUE TREATMENT  
Provided herein are devices, systems, and methods for monitoring lesion or treated area in a tissue during focal ablation or cell membrane disruption therapy. Provided herein are embodiments of an...
9847710 Universal system structure for low power adapters  
A two-stage power converter architecture including an isolation transformer and rectification of the isolation transformer output by an LLC resonant circuit and methodology for operating the same...
US20170356773 SYSTEM AND METHOD OF NON-INTRUSIVE ANEMOMETRY  
A system and method of non-intrusive anemometry. The system comprises an acoustic transmitter disposed at a boundary of fluid flow and first and second acoustic receivers adapted to receive...
US20170344438 MICROPROCESSOR FAULT DETECTION AND RESPONSE SYSTEM  
Aspects disclosed in the detailed description include a microprocessor fault detection and response system. The microprocessor fault detection and response system utilizes a hardware-based...
9825653 Cognitive reconfigurable RF technology  
The present invention provides a radio architecture that contains a main radio path and a sensing path. The parameters of the main radio path are controlled by a cognitive engine. The main radio...
9812978 Circuit and method for driving synchronous rectifiers for high-frequency flyback converters  
A voltage waveform similar to a waveform of a magnetizing current of an isolation transformer and immune to high frequency oscillatory resonant behavior is developed across a capacitor of a series...
US20170316324 Computerized Event-Forecasting System and User Interface  
Systems, methods, and computer-readable media for simulating the course of an event or for collecting data for the simulation are provided. A processing unit can receive attributes of synthetic...
US20170313825 POLYCARBONATE-POLYOLEFIN BLOCK COPOLYMERS AND METHODS OF MAKING THEM  
A polycarbonate-polyolefin block copolymer and a process to form a polycarbonate-polyolefin block copolymer by combining mono- or di-hydroxyaryl with vinyl/vinylidene terminated polyolefin to form...
US20170310482 Using Power Fingerprinting (PFP) to Monitor the Integrity and Enhance Security of Computer Based Systems  
Procedures are described for enhancing target system execution integrity determined by power fingerprinting (PFP): by integrating PFP into the detection phase of comprehensive defense-in-depth...
9797821 Methodology for assessing the biomechanical performance of helmets  
The present invention provides a method for testing a helmet that uses a risk function that incorporates both linear and rotational acceleration to predict the helmet's ability to prevent a...
US20170302270 METHOD AND APPARATUS FOR CURRENT/POWER BALANCING  
Aspects of the disclosure provide a system having a power circuit. The power circuit includes a first switch circuit having at least a first transistor and a second switch circuit having at least...
US20170300657 Computerized Event Simulation Using Synthetic Populations  
Systems, methods, and computer-readable media for simulating the course of an event are provided. A processing unit can receive attributes of a synthetic population and select a...
US20170298032 SPHINGOSINE KINASE INHIBITORS  
Sphingosine kinases are enzymes that catalyze the biosynthesis of sphingosine-1-phosphate. The invention provides compounds that are effective for inhibition of sphingosine kinase type 1,...
US20170296700 STEM CELL COMPOSITIONS, SYSTEMS AND USES THEREOF  
Described herein are stem cells and stem cell compositions that can be used to treat soft tissue injuries, including tendon and ligament injuries. Also described herein are cellular scaffolds that...
9792985 Resistive volatile/non-volatile floating electrode logic/memory cell  
A resistive floating electrode device (RFED) provides a logic cell or non-volatile storage or dynamic or static random access memory on an extremely compact matrix with individual cells scalable...
9789492 Cleaning and dewatering fine coal  
Fine coal is cleaned of its mineral matter impurities and dewatered by mixing the aqueous slurry containing both with a hydrophobic liquid, subjecting the mixture to a phase separation. The...
US20170294833 Multiphase Coupled and Integrated Inductors with Printed Circuit Board (PCB) Windings for Power Factor Correction (PFC) Converters  
A power factor correction (PFC) power converter, particularly of a multiphase totem-pole or other topology presenting a switching bridge that can potentially provide bi-directional power transfer...
9786832 Energy harvester  
An energy harvester for converting vibration energy into electrical energy and harvesting the electrical energy includes: a base; a clamping structure which is supported by the base and is spaced...
US20170279471 Transmitting Wideband Signals Through an Electrically Small Antenna Using Antenna Modulation  
The present invention provides methods and devices to radiate wideband signals. The devices may include a tunable high Q narrowband antenna having a plurality of ports including a feed port and a...
9773967 Processing method for grain-oriented lead-free piezoelectric Na0.5Bi0.5TiO3—BaTiO3 ceramics exhibiting giant performance  
Textured ceramic compositions having improved piezoelectric characteristics as compared with their random counterparts are provided. Methods of making the compositions and devices using them are...
US20170266438 SELECTIVE MODULATION OF INTRACELLULAR EFFECTS OF CELLS USING PULSED ELECTRIC FIELDS  
A system and method for selectively treating aberrant cells such as cancer cells through administration of a train of electrical pulses is described. The pulse length and delay between successive...
US20170253712 Gelation, Aerogel Formation and Reactions Thereof to Produce Non-Random Functionalization of Poly (Aryl Ether Ketones)  
The present invention provides a gel comprising a physical network formed of polymer chain crystallites interconnected by amorphous chain segments. Functionalization of the chain segments between...
US20170246282 MULTIVALENT BRUCELLA VACCINE FOR PROTECTION AGAINST MYCOBACTERIAL INFECTIONS AND METHODS OF USING THE SAME  
Provided herein is a multivalent Brucella vaccine expressing at least one heterologous M. tuberculosis antigen. The vaccines described herein serve as an environmentally safe bivalent vaccine for...
US20170239576 AUTOMATED PROGRAM SYNTHESIS FROM NATURAL LANGUAGE FOR DOMAIN SPECIFIC COMPUTING APPLICATIONS  
Disclosed are various embodiments for automated program synthesis from a natural language for domain specific computing applications. In one embodiment, a natural language processor may be...
9735238 Avoiding internal switching loss in soft switching cascode structure device  
In a cascode switching device, avalanche breakdown of a control transistor and loss of soft switching or zero voltage switching in a high voltage normally-on depletion mode transistor having a...
9732377 Microfluidic systems and methods for chromatin immunoprecipitation (ChIP)  
An integrated microfluidic chromatin immunoprecipitation assay dramatically improves the collection efficiency of ChIP DNA from cells. Immunoprecipitation of chromatin fragments is conducted in a...
US20170222483 OMNIDIRECTIONAL WIRELESS POWER TRANSFER SYSTEM  
In one example, an omnidirectional wireless power transfer system includes high frequency power generator configured to generate a supply of high frequency oscillating power, a number of...
US20170209620 IRREVERSIBLE ELECTROPORATION TO CREATE TISSUE SCAFFOLDS  
The present invention provides engineered tissue scaffolds, engineered tissues, and methods of using them. The scaffolds and tissues are derived from natural tissues and are created using...
9708415 Esters of cellulosic materials and diacids and method of making thereof  
The present invention relates to esters of diacids and cellulosic materials and methods for making thereof. The ester has the chemical composition of Formula (I) Formula I where R1, R2, and R3 can...
US20170197175 Energy-Efficient Extraction of Acid Gas From Flue Gases  
An energy-efficient method of removing carbon dioxide, hydrogen sulfide, and other acid gases from a stream of flue gases. The flue stream is contacted with a predetermined sorbent system to...
9705714 Wideband frequency shift modulation using transient state of antenna  
Described herein are architectures, platforms and methods for implementing modulating a radiating signal of a high Q antenna in order to transmit from one frequency to one or more different...
9705538 Wireless communication device using time-variant antenna module  
Embodiments of the present disclosure describe methods, apparatuses, and systems related to a wireless communication device using time-variant antenna. Other embodiments may be described and/or...
US20170189579 IRREVERSIBLE ELECTROPORATION TO CREATE TISSUE SCAFFOLDS  
The present invention provides engineered tissue scaffolds, engineered tissues, and methods of using them. The scaffolds and tissues are derived from natural tissues and are created using...
US20170179944 Power Switch Drivers with Equalizers for Paralleled Switches  
Capacitors connected between gate terminals of a plurality of parallel-connected power transistors are charged and discharged in each switching cycle to provide a plurality of power transistor...
US20170173143 LIVE ATTENUATED CHIMERIC PORCINE CIRCOVIRUS VACCINE  
The present invention provides a novel chimeric porcine circovirus infectious DNA clone and live attenuated chimeric virus with the PCV2, preferably of subtype PCV2b, capsid gene integrated into a...
9685790 Maximum power point tracking for solar panels  
Approximately one-half of the loss of delivered power from a solar panel having photovoltaic (PV) cells connected in series to form sub-panels due to shading is recovered at low hardware cost by...
9678521 External ramp autotuning for current mode control of switching converter  
Peak current, valley current or average current mode controlled power converters in either digital or analog implementations obtain a stabilized feedback loop and allow high system bandwidth...
US20170155045 Method to Manufacture Highly Conductive Vias and PROM Memory Cells by Application of Electric Pulses  
A memory device having a first array of first electrodes extending along a first direction made from a first material and a second array of second electrodes extending along a second direction...
9663835 Cellulose-solvent-based lignocellulose fractionation with modest reaction conditions and reagent cycling  
Embodiments of the present invention overcome the well-known recalcitrance of lignocellulosic biomass in an economically viable manner. A process and system are provided for the efficient...
US20170143236 SYSTEMS AND METHODS FOR OPTICALLY GUIDED PLACEMENT AND MONITORING OF MEDICAL IMPLANTS  
Described herein are systems and corresponding methods to place and further monitor an implanted medical device. The implanted device includes a fluorescent material that is disposed on a portion...
9660643 Method and apparatus to improve power device reliability  
Aspects of the disclosure provide a power device that includes an upper power module and a lower power module. The upper power module and the lower power module are coupled in series between two...
9645035 Imparting motion to a test object such as a motor vehicle in a controlled fashion with improved accuracy  
An apparatus imparts motion to a test object such as a motor vehicle in a controlled fashion. A base has mounted on it a linear electromagnetic motor having a first end and a second end, the first...
9642371 Compositions and methods comprising colletotrichum for controlling plant species  
Provided are methods and compositions for controlling at least one plant. Methods and compositions can comprise at least one strain of Colletotrichum spp., such as Colletotrichum fioriniae TR-123,...
US20170122286 Noise Reduction Surface Treatment for Airfoil  
The present invention relates to airfoils having surface treatments to reduce trailing edge noise. The surface treatment is designed to reduce trailing edge noise by modifying the boundary layer...
9634673 Anti-islanding detection for three-phase distributed generation  
Wobbling the operating frequency of a phase-locked loop (PLL), preferably by adding a periodic variation is feedback gain or delay in reference signal phase allows the avoidance of any...