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  • Crosslinked polymer compositions, gas separation membranes of such crosslinked polymer compositions, methods of making such membranes, and methods of separating gases using such membranes 

    Virginia Tech Intellectual Properties, Inc.; Board of Regents, Univ. of Tex. Sys.; Chen, Yu; McGrath, James E.; Freeman, Benny D.; Guo, Rulian (United States Patent and Trademark Office, 2017-01-03)
    Gas separation membrane compositions including at least one crosslinked polymer, gas separation membranes made of such compositions, methods for making such gas separation membranes, and methods of using such membranes to ...
  • Two-stage multichannel LED driver with CLL resonant circuit 

    Virginia Tech Intellectual Properties, Inc.; Li, Qiang; Lee, Fred C.; Chen, Xuebing; Huang, Daocheng (United States Patent and Trademark Office, 2017-01-10)
    In a two-stage power converter providing voltage regulation in a first stage, zero voltage switching (ZVS) is provided in switches in an unregulated, constant frequency second stage of a two-stage power converter by an ...
  • System and method for estimating tissue heating of a target ablation zone for electrical-energy based therapies 

    Virginia Tech Intellectual Properties, Inc.; Davalos, Rafael V.; Sano, Michael B.; Garcia, Paulo A.; Arena, Christopher B. (United States Patent and Trademark Office, 2018-11-06)
    Systems and methods are provided for modeling and for providing a graphical representation of tissue heating and electric field distributions for medical treatment devices that apply electrical treatment energy through one ...
  • Time variant antenna for transmitting wideband signals 

    Virginia Tech Intellectual Properties, Inc.; Manteghi, Majid; Salehi, Mohsen Amini (United States Patent and Trademark Office, 2018-11-20)
    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 ...
  • Parallel devices having balanced switching current and power 

    Virginia Tech Intellectual Properties, Inc.; Toyota Motor Engineering & Manufacturing North American, Inc.; Wang, Chi-Ming; Mao, Yincan; Miao, Zichen; Ngo, Khai D. (United States Patent and Trademark Office, 2018-10-30)
    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 driving transistors includes ...
  • Method and apparatus for driving a power device 

    Virginia Tech Intellectual Properties, Inc.; Toyota Motor Engineering & Manufacturing North American, Inc.; Wang, Chi-Ming; Shin, Jongwon; Ngo, Khai D. (United States Patent and Trademark Office, 2016-12-27)
    Aspects of the disclosure provide a circuit for driving a power switch. The circuit includes a first circuit configured to provide a charging current to charge a control terminal of the power switch, a second circuit ...
  • Sphingosine kinase inhibitors 

    Virginia Tech Intellectual Properties, Inc.; University of Virginia Patent Foundation; Lynch, Kevin R.; Santos, Webster L. (United States Patent and Trademark Office, 2018-10-16)
    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, sphingosine kinase type 2, or both. ...
  • Low profile coupled inductor substrate with transient speed improvement 

    Virginia Tech Intellectual Properties, Inc.; Li, Qiang; Lee, Fred C.; Su, Yipeng; Hou, Dongbin (United States Patent and Trademark Office, 2018-10-23)
    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 ...
  • Transmitting wideband signals through an electrically small antenna using antenna modulation 

    Virginia Tech Intellectual Properties, Inc.; Manteghi, Majid (United States Patent and Trademark Office, 2018-10-09)
    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 tuning port as well as a ...
  • Transient performance improvement for constant on-time power converters 

    Virginia Tech Intellectual Properties, Inc.; Li, Qiang; Liu, Pei-Hsin; Lee, Fred C.; Bari, Syed (United States Patent and Trademark Office, 2018-10-23)
    Response of a variable frequency switching constant on-time or adaptive on-time controlled power converter to a large step-up or step-down change in load is improved with a simple circuit that detects magnitude and polarity ...
  • Infectious genomic DNA clone and serological profile of torque teno sus virus 1 and 2 

    Virginia Tech Intellectual Properties, Inc.; Meng, Xiang-Jin; Huang, Yaowei (United States Patent and Trademark Office, 2018-09-04)
    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 ...
  • Devices and methods for contactless dielectrophoresis for cell or particle manipulation 

    Virginia Tech Intellectual Properties, Inc.; Davalos, Rafael V.; Shafiee, Hadi; Sano, Michael B.; Caldwell, John L. (United States Patent and Trademark Office, 2018-09-18)
    Devices and methods for performing dielectrophoresis are described. The devices contain sample channel which is separated by physical barriers from electrode channels which receive electrodes. The devices and methods may ...
  • Method of separating and de-watering fine particles 

    Virginia Tech Intellectual Properties, Inc.; Yoon, Roe-Hoan (United States Patent and Trademark Office, 2016-12-13)
    A process for cleaning and dewatering hydrophobic particulate materials is presented. The process is performed in two steps: 1) agglomeration of the hydrophobic particles in a first hydrophobic liquid/aqueous mixture; ...
  • Multi-step simplified optimal trajectory control (SOTC) based on only Vo and I load 

    Virginia Tech Intellectual Properties, Inc.; Li, Qiang; Lee, Fred C.; Fei, Chao; Feng, Weiyi (United States Patent and Trademark Office, 2018-09-11)
    A resonant power converter is disclosed with a driving circuit generating a switching signal connecting power to a resonant tank circuit, with a voltage monitoring circuit measuring a voltage output and a load current. A ...
  • Miniaturized helium photoionization detector 

    Virginia Tech Intellectual Properties, Inc.; Agah, Masoud; Sreedharan Nair, Shree Narayanan (United States Patent and Trademark Office, 2018-08-14)
    The present invention provides an ionization detector having a base having an enclosed chamber. The enclosed chamber has a first end and a second end. The detector also includes a first outlet which is a source of an ...
  • Semiconductor module arrangement 

    Virginia Tech Intellectual Properties, Inc.; DiMarino, Christina; Boroyevich, Dushan; Burgos, Rolando P.; Johnson, Mark (United States Patent and Trademark Office, 2018-07-24)
    In a switching module structure that includes a low-impedance path to ground, such as a parasitic capacitance of an insulating substrate, a further insulating substrate presenting a parasitic capacitance placed in series ...
  • Wireless communication device using time-variant antenna module 

    Virginia Tech Intellectual Properties, Inc.; Intel Corporation; Suh, Seong-Youp; Kesling, W. Dawson; Manteghi, Majid; Salehi, Mohsen Amini; Skinner, Harry G. (United States Patent and Trademark Office, 2018-07-31)
    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.
  • Power switch drivers with equalizers for paralleled switches 

    Virginia Tech Intellectual Properties, Inc.; Miao, Zichen; Ngo, Khai D.; Zhang, Lujie (United States Patent and Trademark Office, 2018-06-12)
    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 control waveforms from a ...
  • Inhibiting neurotransmitter reuptake 

    Virginia Tech Intellectual Properties, Inc.; Mayo Foundation for Medical Edication and Research; Carlier, Paul R.; Richelson, Elliott; Fauq, Abdul H.; Monceaux, Christopher J. (United States Patent and Trademark Office, 2018-04-17)
    This document relates to compounds as well as methods and materials involved in modulating neurotransmitter reuptake. For example, compounds, methods for synthesizing compounds, and methods for inhibiting neurotransmitter ...
  • Hybrid interleaving structure with adaptive phase locked loop for variable frequency controlled switching converter 

    Virginia Tech Intellectual Properties, Inc.; Li, Qiang; Liu, Pei-Hsin; Lee, Fred C. (United States Patent and Trademark Office, 2018-07-03)
    In a multi-phase power converter using a phase-locked loop (PLL) arrangement for interleaving of pulse frequency modulated (PFM) pulses of the respective phases, improved transient response, improved stability of high ...

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