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Virginia Tech Intellectual Properties Inc patents (2016 archive)


Recent patent applications related to Virginia Tech Intellectual Properties Inc. Virginia Tech Intellectual Properties Inc is listed as an Agent/Assignee. Note: Virginia Tech Intellectual Properties Inc may have other listings under different names/spellings. We're not affiliated with Virginia Tech Intellectual Properties Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "V" | Virginia Tech Intellectual Properties Inc-related inventors


Polysaccharide derivatives and cross-metathesis processes for preparing them

Methods for the cross-metathesis of polysaccharides with one or more olefin-terminated side chains and cross-metathesized products are described. In an exemplary embodiment, a method for the synthesis of cellulose ω-carboxyesters via olefin cross-metathesis with acrylates is described. ... Virginia Tech Intellectual Properties Inc

Methods for inducing electroporation and tissue ablation

The invention encompasses a method of inducing a high permeability state in a cell membrane and a method for ablating a target tissue wherein the method comprises applying an electroporation pulse to a cell, wherein at a time after the electroporation pulse is applied, a plurality of long lived pores (llps) are formed in the cell membrane and the presence of the llps causes a change in the cell osmotic pressure difference. The invention also encompasses a method for ablating a target tissue using an electrical pulse regime that induces cell permeabilization and cell death, wherein the primary mechanism of cell death is as a result of electroporation.. ... Virginia Tech Intellectual Properties Inc

Thermal spray diagnostics

An example system includes at least one acoustic sensor configured to generate at least one time-dependent acoustic data signal indicative of an acoustic signal generated by a thermal spray system performing a process possessing a plurality of process attributes, and a computing device including an acoustic data signal processing module configured to receive the at least one time-dependent acoustic data signal, and transform the at least one time-dependent acoustic data signal to a frequency-domain spectrum, wherein each process attribute of the plurality of process attributes is associated with at least one respective frequency band, and a correlation module configured to determine a process attribute of the plurality of process attributes by identifying at least one characteristic of the frequency-domain spectrum.. . ... Virginia Tech Intellectual Properties Inc

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 supply voltages, and are respectively controlled by a first control signal and a second control signal. ... Virginia Tech Intellectual Properties Inc

Method and apparatus for current/power balancing

Aspects of the disclosure provide a power circuit that includes a first switch circuit in parallel with a second switch circuit. The first switch circuit and the second switch circuit are coupled to a first driving node, a second driving node, a source node and a drain node via interconnections. ... Virginia Tech Intellectual Properties Inc

A transmitter for transmitting a high-rate data transmission through direct excitation

One aspect is a circuit for tuning a resonance frequency of an electrically small antenna and directly exciting the electrically small antenna. The circuit includes a first source configured for providing a constant voltage. ... Virginia Tech Intellectual Properties Inc

Inverse charge current mode (iqcm) control for power converter

An amount of charge transferred by a power converter is estimated by developing a signal that is a combination of signals representing an output voltage of a power converter and an inductor current of the power converter, charging a capacitor with a current proportional to that signal and comparing a voltage developed across the capacitor due to that charging to develop a signal for initiating a pulse to control input of power from a voltage source to the power converter. By using a signal developed in this way, response to both step-up and step-down transients can be improved and, in multi-phase embodiments, ripple cancellation problems such as noise susceptibility and loss of pulse generation can be entirely avoided.. ... Virginia Tech Intellectual Properties Inc

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 feeds an output voltage back to a circuit for generating waveforms for controlling a totem pole circuit to provide output voltage regulation as well as rectification of ac input voltage. The circuit for controlling the totem pole circuit may also be responsive to the ac input power waveform to provide power factor correction (pfc), in which case, the feedback signal provides additional pulse width modulation of the pfc signals. ... Virginia Tech Intellectual Properties Inc

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 resistor and capacitor connection connected in parallel with a synchronous rectifier. A simple logic circuit produces a waveform for controlling the synchronous rectifier which is not subject to significant turn on delay or early turn off caused by oscillatory resonances among parasitic inductances and capacitances. ... Virginia Tech Intellectual Properties Inc

Current mode control dc-dc converter with single step load transient response

A power converter using constant on-time (cot) or ramp pulse modulation (rpm) control achieves more rapid resumption of steady-state operation after a step-up load transient by extending an on-time of a switching pulse by interrupting a ramp voltage waveform that is compared with a threshold that equals a threshold voltage at the termination of a switching pulse or increasing a voltage with which the ramp voltage is compared. These techniques are applied to both single-phase and multi-phase power converters.. ... Virginia Tech Intellectual Properties Inc

A time variant antenna for transmitting wideband signals

A circuit for tuning a resonance frequency of an electrically small antenna. The circuit includes a first source configured for providing a modulation signal, a second source configured for providing a periodic electrical signal, an antenna, and a tuning circuit configured for modulating a resonance frequency of the antenna in response to the modulation signal. ... Virginia Tech Intellectual Properties Inc

High frequency electroporation for cancer therapy

The present invention relates to the field of biomedical engineering and medical treatment of diseases and disorders. Methods, devices, and systems for in vivo treatment of cell proliferative disorders are provided. ... Virginia Tech Intellectual Properties Inc

Omni-tomographic imaging for interior reconstruction using simultaneous data acquisition from multiple imaging modalities

Embodiments of the invention relate to omni-tomographic imaging or grand fusion imaging, i.e., large scale fusion of simultaneous data acquisition from multiple imaging modalities such as ct, mri, pet, spect, us, and optical imaging. A preferred omni-tomography system of the invention comprises two or more imaging modalities operably configured for concurrent signal acquisition for performing roi-targeted reconstruction and contained in a single gantry with a first inner ring as a permanent magnet; a second middle ring containing an x-ray tube, detector array, and a pair of spect detectors; and a third outer ring for containing pet crystals and electronics. ... Virginia Tech Intellectual Properties Inc

Melt compounding and fractionation of lignocellulosic biomass and products produced therefrom

Methods and processes to fractionate and/or convert cellulosic material into accessible sugar and chemical intermediates is provided. A method of embodiments of the invention includes processing lignocellulosic biomass by mixing lignocellulosic biomass and glycerol to form a biomass slurry, and heating and shearing the biomass slurry at a temperature ranging from 100° c. ... Virginia Tech Intellectual Properties Inc

09/15/16 / #20160266116

Infectious genomic dna clone and serological profile of torque teno sus virus 1 and 2

The present invention also provides infectious dna clones, biologically functional plasmid or viral vector containing the infectious nucleic acid genome molecule of torque teno sus virus (ttsuv). The present invention also provides methods for diagnosing ttsuv infection via immunological methods, e.g., enzyme-linked immunoabsorbent assay (elisa) and western blot using pttv specific antigens for detecting serum pttv specific antibodies which indicate infections ttsuv1, ttsuv2, and individual ttsuv1 genotypes.. ... Virginia Tech Intellectual Properties Inc

09/01/16 / #20160254829

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 claimed.. ... Virginia Tech Intellectual Properties Inc

08/11/16 / #20160228434

Treatment of diseases caused by abnormal lymphocyte function with an hdac6 inhibitor

An hdac6 inhibitor (a compound of formula i) is shown to reduce the pathogenesis associated with the b cell mediated autoimmune disease, systemic lupus erythematosus (sle) administration of a compound of formula i attenuated many of the symptoms characteristic of sle including splenomegaly, abnormal b cell differentiation, an increase in the number double-negative thymic t cells, an increase in the level of auto-antibodies such as anti-dsdna, immune complex-mediated glomerulonephritis and an increase in inflammatory cytokine production. Treatment with a compound of formula i also increased the number of the subject's splenic treg cells while removing circulating auto-antibodies inhibition of hdac6 altered bone marrow b cell differentiation by increasing the percentage of cells in the early-stage developmental fractions of both pro- and pre-b cells. ... Virginia Tech Intellectual Properties Inc

07/28/16 / #20160216263

Porcine torque teno virus vaccines and diagnosis

The present invention provides four purified preparation containing a polynucleic acid molecule encoding porcine torque teno virus (pttv) genotypes or subtypes pttv1a-va, pttv1b-va, pttv2b-va, and pttv2c-va. The present invention also provides infectious dna clones, biologically functional plasmid or viral vector containing the infectious nucleic acid genome molecule of the same. ... Virginia Tech Intellectual Properties Inc

07/28/16 / #20160215068

Cross-metathesized polysaccharide derivatives and processes for preparing them

Methods for the cross-metathesis of polysaccharides with one or more olefin-terminated side chains and cross-metathesized products are described. In an exemplary embodiment, a method for the synthesis of cellulose co-carboxyesters via olefin cross-metathesis is described. ... Virginia Tech Intellectual Properties Inc

07/07/16 / #20160197261

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 apart from the base; an elastic member which is disposed between the base and the clamping structure and allows the clamping structure to be elastically moved relative to the base; and a cantilever structure including a cantilever beam having one side fixed to the clamping structure and the other side which is elastically bendable, and a mass body disposed on the cantilever beam.. . ... Virginia Tech Intellectual Properties Inc

07/07/16 / #20160194796

Melt electrospun fibers containing micro and nanolayers and method of manufacturing

Fibers having two or more alternating polymer layers are formed by co-extrusion followed by electroprocessing. The fibers can be used as a non-woven mat or other substrate for a variety of applications. ... Virginia Tech Intellectual Properties Inc

06/16/16 / #20160172976

Coupled inductor for interleaved multi-phase three-level dc-dc converters

Output current ripple is reduced in a three-level dc-dc power converter by connecting a plurality of phase legs in parallel between a source of input power and an output of the power converter and conducting power from the source of input power to the power converter output in an interleaved manner. The large current that results from such interleaved operation is reduced to acceptable levels, potentially less than the output current ripple of the power converter by providing inversely coupled inductors having a mutual inductance preferably greater than the inductor of the power converter in respective phase legs and in series in the circulating current path to avoid any need to increase the power converter inductance due to the circulating current. ... Virginia Tech Intellectual Properties Inc

06/16/16 / #20160166637

Methods of treating a cancer through targeted disruption of alpha connexin 43-zonula occludens-1 (zo-1) interaction

The present disclosure describes methods of treating a cancer based on the targeted disruption of alpha connexin 43-zonula occludens-1 (zo-1) interaction. The methods may include administering to a subject an effective amount of a composition comprising a peptide with a contiguous sequence of amino acids representing a portion of the carboxy terminus of an alpha connexin protein or conservative variant thereof, wherein said carboxy terminus includes the sequence up to the transmembrane domain, optionally in combination with administration of a chemotherapeutic agent. ... Virginia Tech Intellectual Properties Inc

05/26/16 / #20160143698

System and method for estimating a treatment volume for administering electrical-energy based therapies

The invention provides for a system for estimating a 3-dimensional treatment volume for a device that applies treatment energy through a plurality of electrodes defining a treatment area, the system comprising a memory, a display device, a processor coupled to the memory and the display device, and a treatment planning module stored in the memory and executable by the processor. In one embodiment, the treatment planning module is adapted to generate an estimated first 3-dimensional treatment volume for display in the display device based on the ratio of a maximum conductivity of the treatment area to a baseline conductivity of the treatment area. ... Virginia Tech Intellectual Properties Inc

05/12/16 / #20160129103

Chimeric infectious dna clones, chimeric porcine circoviruses and uses thereof

The present invention relates to infectious dna clones, infectious chimeric dna clones of porcine circovirus (pcv), vaccines and means of protecting pigs against viral infection or postweaning multisystemic wasting syndrome (pmws) caused by pcv2. The new chimeric infectious dna clone and its derived, avirulent chimeric virus are constructed from the nonpathogenic pcv1 in which the immunogenic orf gene of the pathogenic pcv2 replaces a gene of the nonpathogenic pcv1, preferably in the same position. ... Virginia Tech Intellectual Properties Inc

05/12/16 / #20160128650

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 x-rays through the object for measuring projection data from various orientations that can be used to generate spectral images in terms of energy-dependent linear attenuation coefficients, and a detector, as described above, comprising one or more energy-integrating detector elements and one or more photon counting detector elements in one or more detectors array or separate detector arrays. The photon counting detector elements may also use dynamic thresholds to define energy windows.. ... Virginia Tech Intellectual Properties Inc

03/24/16 / #20160086723

Low profile coupled inductor substrate with transient speed improvement

A low profile inductor structure suitable for use in a high power density power converter has one or more windings formed by vias through a thin, generally planar body of magnetic material forming the inductor core and conductive cladding on the body of magnetic material or material covering the magnetic material body. Variation of inductance with load current and other operational or environmental parameters is reduced to any desired degree by forming a slot that removes all or a portion of the magnetic material between the locations of the vias.. ... Virginia Tech Intellectual Properties Inc

02/11/16 / #20160040254

Prognostic and diagnostic methods based on quantification of somatic microsatellite variability

Prognostic and diagnostic methods based on somatic microsatellite variability measurements are described. Somatic microsatellite variability measurements can be used to identify defects in dna repair pathways in a biological sample and to predict or identify one or more pathologies. ... Virginia Tech Intellectual Properties Inc








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