Now showing items 425-444 of 619

    • 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 ...
    • Patterned molecular self-assembly 

      Virginia Tech Intellectual Properties, Inc.; Liu, Yanjing; Schick, Guy A. (United States Patent and Trademark Office, 2000-09-05)
      A patterned molecular self-assembly is provided. The patterned molecular self-assembly comprises a support having an exposed patterned surface and a non-patterned surface. A compound is selectively adsorbed on the exposed ...
    • Patterned molecular self-assembly 

      Virginia Tech Intellectual Properties, Inc.; Liu, Yanjing; Schick, Guy A. (United States Patent and Trademark Office, 2002-12-10)
      A patterned molecular self-assembly is provided. The patterned molecular self-assembly comprises a support having an exposed patterned surface and a non-patterned surface. A compound is selectively adsorbed on the exposed ...
    • Perturbed square ring slot antenna with reconfigurable polarization 

      The United States of America as represented by the Secretary of Agriculture; Virginia Tech Intellectual Properties, Inc.; Zaghloul, Amir I.; Parent, Mark G; Dorsey, W Mark (United States Patent and Trademark Office, 2013-02-12)
      A reconfigurable polarization antenna includes a microwave dielectric substrate having a ground plane that has a centrally located slot with five conducting patches, four of which form an evenly spaced apart perimeter group ...
    • Pharmaceutical preparations of bioactive substances extracted from natural sources 

      Virginia Tech Intellectual Properties, Inc.; Armadillo Pharmaceuticals, Inc.; Martin, Michael Z.; Ashraf-Khorassani, Mehdi; Taylor, Larry (United States Patent and Trademark Office, 2004-06-08)
      This invention relates to methods of extracting and purifying bioactive substances from various plants and herbs. More specifically the invention relates to methods of extracting and separating bioactive substances from ...
    • Phase compensation driving scheme for synchronous rectifiers 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Fu, Dianbo (United States Patent and Trademark Office, 2009-10-13)
      Phase compensation of a voltage appearing on physical terminals of a synchronous rectifier switching element such as a MOSFET is used to substantially eliminate effects of package inductance of the synchronous rectifier ...
    • Phosphines and catalysts containing the same 

      Virginia Polytechnic Institute; Celanese International Corporation; Hanson, Brian E.; Kohlpaintner, Christian W.; Ding, Hao (United States Patent and Trademark Office, 1998-10-06)
      The present invention provides novel a phosphine as a ligand (L) and having the formula ##STR1## wherein k, l, m, R', R'', R.sub.1 -R.sub.9 and n are defined herein, and which can be complexed with a transition metal (M') ...
    • Phosphorus containing poly(arylene ether)s useful as oxygen plasma resistant films and in nonlinear optical applications 

      Center for Innovative Technology; Virginia Polytechnic Institute and State University; Virginia Tech Intellectual Properties, Inc.; Priddy, Jr., Duane B.; Pickering, Timothy L.; McGrath, James E.; Smith, Carrington Duane (United States Patent and Trademark Office, 1995-02-07)
      Polymers containing the phosphine oxide moiety are identified as being particularly useful in applications where resistance to atomic oxygen etching is required and in applications where second order nonlinear optical ...
    • Piezoelectric ceramic-reinforced metal matrix composites 

      Virginia Tech Intellectual Properties, Inc.; Kampe, Stephen L.; Schultz, Jeffrey Patrick; Aning, Alexander O.; Goff, Adam; Franklin, Jennifer (United States Patent and Trademark Office, 2006-10-24)
      Composite materials comprising piezoelectric ceramic particulates dispersed in a metal matrix are capable of vibration damping. When the piezoelectric ceramic particulates are subjected to strain, such as the strain ...
    • Planar wideband antennas 

      Virginia Tech Intellectual Properties, Inc.; Stutzman, Warren L.; Suh, Seong-Youp (United States Patent and Trademark Office, 2006-04-11)
      Wideband antennas with omnidirectional coverage have both military and commercial applications. In one embodiment, the Planar Inverted Cone Antenna (PICA) is composed of a single flat element vertically mounted above a ...
    • Plasma torch for ignition, flameholding and enhancement of combustion in high speed flows 

      Virginia Tech Intellectual Properties, Inc.; O'Brien, Walter F.; Schetz, Joseph A.; Billingsley, Matthew C.; Sanders, Darius D. (United States Patent and Trademark Office, 2009-08-11)
      Preheating of fuel and injection into a plasma torch plume fro adjacent the plasma torch plume provides for only ignition with reduced delay but improved fuel-air mixing and fuel atomization as well as combustion reaction ...
    • Plug-and-play time-variant antenna module for wireless communication devices 

      Virginia Tech Intellectual Properties, Inc.; Intel Corporation; Suh, Seong-Youp; Kesling, W. Dawson; Manteghi, Majid; Skinner, Harry G. (United States Patent and Trademark Office, 2016-09-13)
      A plug-and-play antenna may be used with many different types of wireless communication devices. An antenna may be coupled to an impedance tuning component and a waveform generator. A calibration control module receives ...
    • PMBDCM and two phase SRM motor, two phase SRM rotor and stator, and coil wrap for PMBDCM and SRM motors 

      Virginia Tech Intellectual Properties, Inc.; Ramu, Krishnan; Staley, Amanda Martin (United States Patent and Trademark Office, 2008-09-02)
      A two-phase switched reluctance motor in an embodiment includes a plurality of salient rotor poles that each have asymmetric reluctances about a central radial axis of the respective rotor pole. Each of the rotor poles has ...
    • Polar ordering of reactive chromophores in layer-by-layer nonlinear optical materials 

      Virginia Tech Intellectual Properties, Inc.; Gibson, Harry W.; Davis, Richey M.; Cott, Kevin Van; Heflin, Jr., James R. (United States Patent and Trademark Office, 2007-08-21)
      Thin films exhibiting second-order nonlinear optical (NLO) properties, as well as materials and methods for producing such films, are provided. The films are formed by depositing, on a substrate, alternate layers of a ...
    • Polar ordering of reactive chromophores in layer-by-layer nonlinear optical materials 

      Virginia Tech Intellectual Properties, Inc.; Gibson, Harry W.; Davis, Richey M.; Cott, Kevin Van; Heflin, Jr., James R. (United States Patent and Trademark Office, 2005-10-11)
      Thin films exhibiting second-order nonlinear optical (NLO) properties, as well as materials and methods for producing such films, are provided. The films are formed by depositing, on a substrate, alternate layers of a ...
    • Poly(alkyl vinyl ether)polyolefin copolymers 

      Virginia Tech Intellectual Properties, Inc.; McGrath, James E.; Riffle, Judy; Patel, Niranjan (United States Patent and Trademark Office, 1991-03-05)
      A blend of a polyolefin and a poly(alkyl vinyl ether) can be blended at elevated temperature to form a copolymer of the polyolefin and poly(alkyl vinyl ether). The resulting composition is useful as a compatibilizer, as a ...
    • Poly(amide-acid) compositions derived from tetracarboxylic acid dianhyrides capable of solution imidization 

      Virginia Tech Intellectual Properties, Inc.; McGrath, James E.; Gungor, Attila (United States Patent and Trademark Office, 1993-03-16)
      The imidization temperature of poly(amide-acid) compositions derived from tetracarboxylic acid dianhydrides can be lowered by use of a bis(aminophenoxyphenyl) phosphine oxide in the diamine component which is reacted with ...
    • Polyalkyloxazoline/polylactone copolymers, processes for making, and uses 

      Virginia Tech Intellectual Properties, Inc.; Riffle, Judy; Sinai-Zingde, Gurudus D.; Brink, Andrew E. (United States Patent and Trademark Office, 1993-02-02)
      Block copolymers of polyoxazoline and polylactone moieties can be used as polymeric compatibilizers for polyamides and polyolefins.
    • Polyalkylvinyl ether/polyalkyloxazoline copolymers, processes for making, and uses 

      Virginia Tech Intellectual Properties, Inc.; Riffle, Judy; Sinai-Zingde, Gurudus D. (United States Patent and Trademark Office, 1991-01-29)
      Graft and block copolymers of polyalkylvinyl ether and polyoxazoline moieties can be used as polymeric compatibilizers.
    • Polyalkylvinyl ether/polyalkyloxazoline copolymers, processes for making, and uses 

      Virginia Tech Intellectual Properties, Inc.; Riffle, Judy; Sinai-Zingde, Gurudus D. (United States Patent and Trademark Office, 1992-03-24)
      Graft and block copolymers of polyalkylvinyl ether and polyoxazoline moieties can be used as polymeric compatibilizers.