Now showing items 372-391 of 619

    • Modular building system 

      Virginia Tech Intellectual Properties, Inc.; King, Jonathan J.; Clark, David B.; Dunay, Robert; Wheeler, Joseph (United States Patent and Trademark Office, 2013-02-12)
      The present invention relates to the field of modular building systems. Embodiments of the invention include, a modular building system comprising planar sheets of material and moment connections, which are combined with ...
    • Modular wall assembly system 

      Virginia Tech Intellectual Properties, Inc.; Wheeler, Joseph (United States Patent and Trademark Office, 2014-11-18)
      Provided are systems and components for modular wall assembly. The components include horizontal tracks, vertical studs, and floor tracks that have engagement means for assembling the components together into a frame ...
    • Mono- and di(functionally-substituted phenylene) semi-rigid crowns and precursors thereof 

      Virginia Tech Intellectual Properties, Inc.; Gibson, Harry W.; Delaviz, Yadollah (United States Patent and Trademark Office, 1994-07-19)
      Bis(carboalkoxy-substituted m-phenylene)-32-crown-10 compounds, useful as polymerizable monomers, can be formed in one step by reacting a functionalized dihydroxy aromatic compound with a dihalopolyether. In the same ...
    • Mono- and Di(functionally-substituted phenylene) semi-rigid crowns and processes for making 

      Virginia Tech Intellectual Properties, Inc.; Gibson, Harry W.; Delaviz, Yadollah (United States Patent and Trademark Office, 1992-08-25)
      Bis(carboalkoxy-substituted m-phenylene)-32-crown-10 compounds, useful as polymerizable monomers, can be formed in one step by reacting a functionalized dihydroxy aromatic compound with a dihalopolyether. In the same ...
    • Morning glory-derived anticancer agents, and novel ipomoeassin compounds 

      Virginia Tech Intellectual Properties, Inc.; Kingston, David G.; Cao, Shugeng (United States Patent and Trademark Office, 2009-07-14)
      Ipomoeassin compounds derived from morning glory plant material (especially Ipomoea sp. from Suriname) are useful as anti-cancer agents. The novel compounds also are useful for treating neurodegenerative disorders (such ...
    • Multi-cavity Fabry-Perot interferometric thin-film sensor with built-in temperature compensation 

      Virginia Tech Intellectual Properties, Inc.; Wang, Anbo; Zhang, Yan Ryan; Cooper, Kristie L. (United States Patent and Trademark Office, 2009-02-24)
      A fiber optic sensor includes at least two Fabry-Perot (FP cavities) defined by at least three partially reflecting surfaces which individually and together are capable of generating different interference spectra which ...
    • Multi-channel constant current source and illumination source 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Ji, Shu; Wu, Haoran (United States Patent and Trademark Office, 2013-12-03)
      A multi-channel circuit having respective channels powered through transformers having primary windings connected in series allows substantially equal constant currents to be provided through all channels by cross-regulation ...
    • Multi-channel two-stage controllable constant current source and illumination source 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Feng, Weiyi (United States Patent and Trademark Office, 2015-04-07)
      A multi-channel constant current source particularly suitable for driving an array of light-emitting diodes as an illumination apparatus provides a power source stage voltage regulator for providing a variable voltage using ...
    • Multi-element resonant converters 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Xu, Ming Gang; Liu, Ya; Fu, Dianbo (United States Patent and Trademark Office, 2010-06-22)
      A resonant switched power converter having switching frequency controlled in response to an output voltage thereof achieves over-current protection such as at start-up or under short circuit conditions using a resonant ...
    • Multi-loop control for quasi-resonant converters 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Ridley, Raymond B. (United States Patent and Trademark Office, 1989-09-12)
      A multi-loop controller for controlling a quasi-resonant converter having a power switch, a filter inductor and an output voltage. The controller includes a sensor circuit for sensing the output voltage of the converter. ...
    • Multi-parameter X-ray computed tomography 

      Virginia Tech Intellectual Properties, Inc.; Wang, Ge; Cong, Wenxiang (United States Patent and Trademark Office, 2012-02-21)
      The present invention relates to the field of x-ray imaging. More particularly, embodiments of the invention relate to methods, systems, and apparatus for imaging, which can be used in a wide range of applications, including ...
    • Multi-phase EMI noise separator 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Wang, Shuo (United States Patent and Trademark Office, 2014-04-15)
      Common mode (CM) and differential mode (DM) components of multi-phase conducted electromagnetic interference (EMI) noise emanating from electronic circuits such as power converters/inverters are separated by respective ...
    • 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 ...
    • Multimodal vibration harvester combining inductive and magnetostrictive mechanisms 

      Virginia Tech Intellectual Properties, Inc.; Priya, Shashank; Marin, Anthony (United States Patent and Trademark Office, 2014-12-09)
      Multi-Mechanism Energy Harvesters (MMEHs) combining magnetostrictive and inductive mechanisms with a shape and size similar to an AA battery. Included are MMEHs with (a) an inductive mode: a cylindrical tube, a rod lengthwise ...
    • Multiphase clamp coupled-buck converter and magnetic integration 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Wei, Jia; Xu, Peng; Yao, Kaiwei; Ye, Mao (United States Patent and Trademark Office, 2004-08-31)
      Voltage regulation, transient response and efficiency of a voltage regulator module (VRM) is improved where short duty cycles are necessitated by large differentials of input and output voltage by including at least one ...
    • Multiphase soft switched DC/DC converter and active control technique for fuel cell ripple current elimination 

      Virginia Tech Intellectual Properties, Inc.; Lai, Jih-Sheng; Ridenour, Amy Marlene; Liu, Changrong (United States Patent and Trademark Office, 2009-04-14)
      DC/DC converter has a transformer having primary coils connected to an input side and secondary coils connected to an output side. Each primary coil connects a full-bridge circuit comprising two switches on two legs, the ...
    • Multiphase voltage regulator having coupled inductors with reduced winding resistance 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Xu, Ming Gang; Dong, Yan (United States Patent and Trademark Office, 2010-01-19)
      A multiple phase buck converter or boost converter, or buck-boost converter has an inductor in each phase. The inductors are inversely coupled. In a first embodiment, the converter includes a toroidal magnetic core with ...
    • Multiphase voltage regulator having coupled inductors with reduced winding resistance 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Xu, Ming Gang; Dong, Yan (United States Patent and Trademark Office, 2010-10-26)
      A multiple phase buck converter or boost converter, or buck-boost converter has an inductor in each phase. The inductors are inversely coupled. In a first embodiment, the converter includes a toroidal magnetic core with ...
    • Multiphase voltage regulator having coupled inductors with reduced winding resistance 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Xu, Ming Gang; Zhou, Jinghai; Dong, Yan (United States Patent and Trademark Office, 2007-04-03)
      A multiple phase buck converter or boost converter, or buck-boost converter has an inductor in each phase. A magnetic core with a unique woven topology provides inverse coupling between the inductors. The inductors can ...
    • Multiple exposure with image reversal in a single photoresist layer 

      Virginia Tech Intellectual Properties, Inc.; Orlowski, Marius K.; Ndoye, Coumba (United States Patent and Trademark Office, 2015-08-25)
      Multiple patterned exposures of a single layer of image reversal resist prior to and following image reversal processing, upon development, respond to the respective exposures as either a positive or a negative resist, ...