Now showing items 153-172 of 619

    • Elastic-part immersion cell for analyzing microstructures in materials 

      Center for Innovative Technology; Virginia Polytechnic Institute and State University; Virginia Tech Intellectual Properties, Inc.; Anderson, Alan J. (United States Patent and Trademark Office, 1995-06-06)
      The elastic-port immersion cell (10) is an optical oil immersion vessel which has a flexible latex (or other) sheath (24) protruding from its sidewall. The sheath is affixed to an opening in the wall of the vessel using a ...
    • Electrically conducting microporous frameworks 

      Virginia Tech Intellectual Properties, Inc.; Soghomonian, Victoria G.; Heremans, Jean J. (United States Patent and Trademark Office, 2014-10-07)
      Electrically conducting vanadium arsenate or vanadium phosphate materials are described. The materials include a vanadium arsenate or vanadium phosphate framework structure about organic template and water molecules which ...
    • Electromagnetic interference noise separator 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Wang, Shuo (United States Patent and Trademark Office, 2012-02-28)
      Improved performance of a noise separator circuit capable of separating common mode (CM) and differential mode (DM) components of electromagnetic interference (EMI) noise are provided by arrangement of terminating impedances ...
    • Electrostrictive and piezoelectric thin film assemblies and method of fabrication therefor 

      Virginia Tech Intellectual Properties, Inc.; Claus, Richard O.; Liu, Yanjing; Zeng, Tingying (United States Patent and Trademark Office, 2002-09-10)
      An electrostatic self-assembly method of fabricating electrostrictive and piezoelectric thin film assemblies not only provides a thinner film than is attainable by conventional methods, but provides excellent molecular-level ...
    • EMI filter and frequency filters having capacitor with inductance cancellation loop 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Odendaal, Willem G.; Wang, Shuo (United States Patent and Trademark Office, 2007-02-20)
      An electromagnetic interference (EMI) filter or frequency filters (e.g. bandpass or band reject filters) in which a capacitor has an inductance cancellation loop. Inductive coupling between capacitors can allow undesired ...
    • Emitter turn-off thyristors (ETO) 

      Virginia Tech Intellectual Properties, Inc.; Huang, Alex Q. (United States Patent and Trademark Office, 2005-08-23)
      A family of emitter controlled thyristors employ plurality of control schemes for turning the thyristor an and off. In a first embodiment of the present invention a family of thyristors are disclosed all of which comprise ...
    • Emitter turn-off thyristors and their drive circuits 

      Virginia Tech Intellectual Properties, Inc.; Huang, Oin; Zhang, Bin (United States Patent and Trademark Office, 2004-03-23)
      A family of emitter turn-off thyristors and their drive circuit comprise a gate turn-on (GTO) thyristor, a first switch, the drain of the first switch being connected to the cathode of the GTO thyristor, and a second switch ...
    • Endohedral metallofullerene derivatives 

      Virginia Tech Intellectual Properties, Inc.; Dorn, Harry C.; Iezzi, Erick B.; Duchamp, James (United States Patent and Trademark Office, 2008-04-15)
      Trimetallic nitride endohedral metallofullerene derivatives and their preparation are described. The trimetallic nitride endohedral metallofullerene derivatives have the general formula A3-nXn@C
    • Endohedral metallofullerenes and method for making the same 

      Virginia Tech Intellectual Properties, Inc.; Dorn, Harry C.; Stevenson, Steven A. (United States Patent and Trademark Office, 2001-10-16)
      A family of trimetallic nitride endohedral metallofullerenes and their preparation are described. The trimetallic nitride endohedral metallofullerenes have the general formula A.sub.3-n X.sub.n @C.sub.m where n ranges from ...
    • Energy harvester 

      Virginia Tech Intellectual Properties, Inc.; Samsung Electronics Co., Lgd.; Park, Hwi-yeol; Cho, Kyunghoon; Heo, Jin S.; Priya, Shashank; Abdelkefi, Abdessattar; Sharpes, Nathan; Hajj, Muhammad R. (United States Patent and Trademark Office, 2017-10-10)
      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 ...
    • Energy storage for power factor correction in battery charger for electric-powered vehicles 

      Virginia Tech Intellectual Properties, Inc.; Wang, Hui; Ngo, Khai Doan (United States Patent and Trademark Office, 2018-03-13)
      Switches of a switching circuit used to control operation of an electric motor such as in an electrically powered vehicle connect respective windings of the electric motor as a single phase inductor during battery charging. ...
    • Enhancement of second-order non-linear optical susceptibilities in organic film materials using non-centrosymmetric nanoparticles 

      Virginia Tech Intellectual Properties, Inc.; Davis, Richey M.; Heflin, Jr., James R.; Robinson, Hans D. (United States Patent and Trademark Office, 2010-08-10)
      A non-linear optical material comprising a plurality of non-centrosymmetric nanoparticles juxtaposed to non-linear optical (NLO) film at a localized surface Plasmon resonance (LSPR) of the nanoparticles. The LSPR is resonant ...
    • Esters of cellulosic materials and diacids and method of making thereof 

      Virginia Tech Intellectual Properties, Inc.; Edgar, Kevin J.; Kar, Nilanjana (United States Patent and Trademark Office, 2017-07-18)
      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 be the same or different, ...
    • Estimating the location of a wireless terminal based on radio-frequency pattern matching and cooperative measurements 

      Virginia Polytechnic Institute and State Univ.; Polaris Wireless, Inc.; Buehrer, R. Michael; Gordon, Scot; Monir Vaghefi, Sayed Reza (United States Patent and Trademark Office, 2017-03-14)
      A method for estimating the location of a wireless terminal is disclosed that is based on using: the known location of one or more devices, empirical data that indicates the relative position of the wireless terminal to ...
    • Exact local computed tomography based on compressive sampling 

      Virginia Tech Intellectual Properties, Inc.; Wang, Ge; Yu, Hengyong (United States Patent and Trademark Office, 2014-08-19)
      A system and method for tomographic image reconstruction using truncated projection data that allows exact interior reconstruction (interior tomography) of a region of interest (ROI) based on the known sparsity models of ...
    • Expression of a heterologous protein C in mammary tissue of transgenic animals using a long whey acidic protein promoter 

      The American Red Cross; Virginia Tech Intellectual Properties, Inc.; The United States of America as represented by the Department of Health and Human Services; Drohan, William N.; Velander, William H.; Lubon, Henryk; Hennighausen, Lothar (United States Patent and Trademark Office, 2001-07-17)
      An isolated DNA sequence which regulates the expression of a heterologous gene composed of a mouse whey acidic protein promoter having a length of greater than about 2.4 kb extending upstream from the unique KpnI site in ...
    • Expression of active human factor IX in mammary tissue and of milk non human transgenic mammals 

      The American Red Cross; Virginia Tech Intellectual Properties, Inc.; Drohan, William N.; Velander, William H.; Johnson, John L.; Lubon, Henryk (United States Patent and Trademark Office, 2002-02-05)
      Recombinant Factor IX characterized by a high percentage of active protein can be obtained in the milk of transgenic animals that incorporate chimeric DNA molecules according to the present invention. Transgenic animals ...
    • Extended interior methods and systems for spectral, optical, and photoacoustic imaging 

      Virginia Tech Intellectual Properties, Inc.; Xu, Yong Yao; Yang, Lin Wu; Wang, Ge; Lu, Yang; Cong, Wenxiang; Cong, Alexander X.; Shen, Haiou (United States Patent and Trademark Office, 2014-10-14)
      The present invention relates to the field of medical imaging. More particularly, embodiments of the invention relate to methods, systems, and devices for imaging, including for tomography-based applications. Embodiments ...
    • External ramp autotuning for current mode control of switching converter 

      Virginia Tech Intellectual Properties, Inc.; Liu, Pei-Hsin; Lee, Fred C.; Mattavelli, Paolo; Yan, Yingyi (United States Patent and Trademark Office, 2017-06-13)
      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 design by use of an external ...
    • Fabrication of miniature fiber-optic temperature sensors 

      Virginia Tech Intellectual Properties, Inc.; Wang, Anbo; Zhu, Yizheng (United States Patent and Trademark Office, 2010-07-27)
      A method of coupling a silica fiber and a sapphire fiber includes providing a silica fiber having a doped core and a cladding layer, with the doped core having a prescribed diameter, providing a sapphire fiber having a ...