Virginia Tech Patents: Recent submissions

Now showing items 1-20 of 689

    • Line frequency commutated voltage source converters for multiphase modular multilevel converters 

      Liu, Jian; Dong, Dong (2022-11-29)
      Aspects are described for line frequency commutated voltage source converters for multiphase modular multilevel converters. A voltage source converter (VSC) capacitor voltage of a multiphase VSC of a multiphase power ...

    • Fog Harvester Having a Vertical Wire Array and Uses Thereof 

      Virginia Tech Intellectual Properties, Inc.; Boreyko, Jonathan B.; Kennedy, Brook; Shi, Weiwei; Tulkoff, Joshua; Anderson, Mark (United States Patent and Trademark Office, 2022-10-11)
      Described herein are fog harvesters having a vertical wire array and systems thereof. The fog harvesters described herein can be used to harvest liquid from the air, such as from fog. The fog harvesters can, in some aspects, ...

    • Three-Phase, Three-Level Inverters and Methods for Performing Soft Switching with Phase Synchronization 

      Burgos, Rolando; Haryani, Nidhi; Boroyevich, Dushan; Ohn, Sungjae (2021-01-05)
      A three-phase, N-level inverter and method are disclosed. A circuit topology of the inverter comprises first, second and third sets of switches and first, second and third inductors. Each switch comprises at least first, ...

    • Planar Bridging-Droplet Thermal Diode 

      Boreyko, Jonathan B.; Edalatpour, Mojtaba; Murphy, Kevin; Mukherjee, Ranit (Innovators Legal, 2021-12-30)
      This disclosure provides a thermal diode including a first plate having a first surface defining a wick structure. The thermal diode can include a second plate having a smooth surface facing the wick structure, the smooth ...

    • Device and method for electroporation based treatment of stenosis of a tubular body part 

      Virginia Tech Intellectual Properties, Inc.; AngioDynamics, Inc.; Callas, Peter; Davalos, Rafael V.; Garcia, Paulo A.; Neal, II, Robert E. (United States Patent and Trademark Office, 2020-07-07)
      The present invention relates to medical devices and methods for treating a lesion such as a vascular stenosis using non-thermal irreversible electroporation (NTIRE). Embodiments of the present invention provide a balloon ...

    • Liquid crystalline polyester compositions and methods 

      Virginia Tech Intellectual Properties, Inc.; ExxonMobil Chemical Patents Inc.; Heifferon, Katherine V.; Turner, S. Richard; Tallury, Syamal; Chen, Ting; Guzman, Javier; Long, Timothy E.; Yang, Yong (United States Patent and Trademark Office, 2020-09-01)
      Liquid crystalline hydroquinone-3,4′-biphenyl dicarboxylate polyesters, and methods of making them. The polyesters may be melt processed at a temperature below the thermal decomposition temperature and the isotropic ...

    • Energy-efficient extraction of acid gas from flue gases 

      Virginia Tech Intellectual Properties, Inc.; Higgins, Stuart J.; Liu, Yih-An; Yu, Yueying (United States Patent and Trademark Office, 2020-08-25)
      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 remove acid gases from the flue ...

    • Polybenzimidazoles and methods of making and using thereof 

      Virginia Tech Intellectual Properties, Inc.; Board of Regents, The University of Texas System; McGrath, James E.; Riffle, Judy S.; Freeman, Benny D. (United States Patent and Trademark Office, 2019-01-29)
      Disclosed are polybenzimidazoles containing sulfonyl groups. The polymers can be synthesized in Eaton's reagent from 3,3′,4,4′-tetraaminodiphenylsulfone, which itself can be synthesized from 4,4′-dichlorodiphenylsulfone. ...

    • Method for jointly adapting an OFDM waveform and the demodulator for interference mitigation and harsh channels 

      Virginia Tech Intellectual Properties, Inc.; Carrick, Matthew; Marojevic, Vuk; Reed, Jeffrey H. (United States Patent and Trademark Office, 2019-02-05)
      The present invention provides a method and system for a processing multicarrier signal to create a spectral correlation across multiple antennas. The system includes at least one transmitter adapted to create a plurality ...

    • Circulating current injection control 

      Virginia Tech Intellectual Properties, Inc.; Toyota Motor Engineering & Manufacturing North America, Inc.; Wang, Jun; Burgos, Rolando; Boroyevich, Dushan (United States Patent and Trademark Office, 2018-12-11)
      In one example, a power converter includes a modular multilevel converter (MMC) electrically coupled between a first power system and a second power system. The MMC includes an arrangement of switching submodules, and the ...

    • Method and apparatus for balancing current and power 

      Virginia Tech Intellectual Properties, Inc.; Toyota Motor Engineering & Manufacturing North America, Inc.; Ngo, Khai D. T.; Wang, Chi-Ming; Mao, Yincan (United States Patent and Trademark Office, 2019-01-22)
      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 control node, ...

    • Transmitter for transmitting a high-rate data transmission through direct excitation 

      Virginia Tech Intellectual Properties, Inc.; Salehi, Mohsen; Manteghi, Majid (United States Patent and Trademark Office, 2019-02-26)
      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. ...

    • Multiphase coupled and integrated inductors with printed circuit board (PBC) windings for power factor correction (PFC) converters 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Yang, Yu-Chen; Li, Qiang; Mu, Mingkai (United States Patent and Trademark Office, 2019-02-26)
      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 control, reduces a nominal ...

    • Low-temperature co-firing of multilayer textured piezoelectric ceramics with inner electrodes 

      Virginia Tech Intellectual Properties, Inc.; Yan, Yongke; Priya, Shashank (United States Patent and Trademark Office, 2019-03-05)
      Textured PMN-PZT fabricated by templated grain growth (TGG) method has a piezoelectric coefficient (d) of 3 to 5 times that of its random counterpart. By combining this TGG method with low-temperature co-firing ceramics ...

    • Non-linear droop control 

      Virginia Tech Intellectual Properties, Inc.; Chen, Fang; Burgos, Rolando; Boroyevich, Dushan (United States Patent and Trademark Office, 2020-09-08)
      Aspects of non-linear droop control are described herein. In one embodiment, a system includes a first power converter or source configured to provide power to a bus, a second power converter or source configured to provide ...

    • Learning and deployment of adaptive wireless communications 

      Virginia Tech Intellectual Properties, Inc.; O'Shea, Timothy James (United States Patent and Trademark Office, 2019-02-26)
      Methods, systems, and apparatus, including computer programs encoded on computer storage media, for training and deploying machine-learned communication over radio frequency (RF) channels. One of the methods includes: ...

    • Fiber array for optical imaging and therapeutics 

      Virginia Tech Intellectual Properties, Inc.; Hood, Robert L.; Grant, David C.; Robertson, John L.; Rylander, Christopher G.; Rylander, M. Nichole; Kosoglu, Mehmet A.; Rossmeisl, John H. (United States Patent and Trademark Office, 2019-03-05)
      The present invention relates to the field of optical imaging and therapeutics. More particularly, embodiments of the present invention provide minimally-invasive Fiberoptic Microneedle Devices (FMDs) for light-based ...

    • System and method for ablating a tissue site by electroporation with real-time monitoring of treatment progress 

      Virginia Tech Intellectual Properties, Inc.; Davalos, Rafael V.; Neal, II, Robert E. (United States Patent and Trademark Office, 2019-03-26)
      A medical system for ablating a tissue site with real-time monitoring during an electroporation treatment procedure. A pulse generator generates a pre-treatment (PT) test signal having a frequency of at least 1 MHz prior ...

    • Analysis of component having engineered internal space for fluid flow 

      Virginia Tech Intellectual Properties, Inc.; Rolls-Royce PLC; Blair, Taylor K.; Batra, Romesh C.; Cybulsky, Michael; Pickrell, Gary R.; Sinatra, Raymond J. (United States Patent and Trademark Office, 2019-04-30)
      A characteristic of a component having an engineered internal space can be analyzed by recording acoustic signals produced by fluid flow through the internal space at controlled flow rates, and determining one or more ...

    • Process and system for establishing a moving target connection for secure communications in client/server systems 

      Virginia Tech Intellectual Properties, Inc.; Morrell, Christopher F.; Moore, Reese A.; Marchany, Randolph C.; Tront, Joseph G. (United States Patent and Trademark Office, 2019-03-26)
      A system and method performs a moving target blind rendezvous by exchanging data through a distributed hash table. The system allows users to securely send small pieces of information over a network while only requiring ...