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Now showing items 172-191 of 619

    • 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 ...
    • Fan noise reduction from turbofan engines using adaptive Herschel-Quincke tubes 

      Virginia Tech Intellectual Properties, Inc.; Burdisso, Ricardo A.; Smith, Jerome Peter (United States Patent and Trademark Office, 2000-09-05)
      An array of adaptive or fixed Herschel-Quincke tubes aligned in a circumferential or helical array about an inlet of a turbofan engine. The array of tubes effectively divide the acoustic energy generated by the engine. One ...
    • Fastening device 

      Virginia Tech Intellectual Properties, Inc.; Harris, Sam H. (United States Patent and Trademark Office, 1919-05-06)
    • Female sex pheromone of the dogwood borer (DWB), Synanthedon scitula, and attraction inhibitor (antagonist) 

      Virginia Polytechnic Institute and State University; The United States of America as represented by the Secretary of Agriculture; Zhang, Aijun; Leskey, Tracy C.; Bergh, Christopher J. (United States Patent and Trademark Office, 2011-05-17)
      A composition for attracting male Synanthedon scitula, containing a male Synanthedon scitula attracting effective amount of Z,Z-3,13-octadecadienyl acetate, optionally E,Z-2,13-octadecadienyl acetate, optionally ...
    • Ferroelastic ceramic-reinforced metal matrix composites 

      Virginia Tech Intellectual Properties, Inc.; Kampe, Stephen L.; Schultz, Jeffrey Patrick; Asare, Ted Ankomahene; Poquette, Ben David (United States Patent and Trademark Office, 2009-09-08)
      Composite materials comprising ferroelastic ceramic particulates dispersed in a metal matrix are capable of vibration damping. When the ferroelastic ceramic particulates are subjected to stress, such as the cyclic stress ...
    • Ferroelectric emitter 

      SAMSUNG ELECTRONICS CO., LTD.; Virginia Tech Intellectual Properties, Inc.; Yoo, In-kyeong (United States Patent and Trademark Office, 2002-11-12)
      A ferroelectric emitter is described. The ferroelectric emitter of the present invention includes a ferroelectric layer having a first side, an opposing second side, and a top surface, a first and a second electrode formed ...
    • Fiber array for optical imaging and therapeutics 

      Virginia Tech Intellectual Properties, Inc.; Xu, Yong Yao; Wang, Ge; Rylander, Christopher G.; Campbell, Thomas A.; Kosoglu, Mehmet Alpaslan (United States Patent and Trademark Office, 2014-08-05)
      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 ...
    • Fiber materials for manufacturing fiber reinforced phenolic composites and adhesives with nucleophilic initiators positioned on the fiber surfaces 

      Virginia Polytechnic Institute and State University; McGrath, James E.; Riffle, Judy; Tyberg, Christy (United States Patent and Trademark Office, 2000-07-18)
      Fiber reinforced thermosetting matrix materials are advantageously created using fibers that are coated with a coating containing a nucleophilic initiator or have a surface treatment which creates a nucleophilic initiator ...
    • Fiber optic accent light 

      Virginia Tech Intellectual Properties, Inc.; Weber, Michael E. (United States Patent and Trademark Office, 1997-12-23)
    • Fiber optic grating-based weighted, two-mode fiber sensors 

      Center for Innovative Technology; VPI & SU; Murphy, Kent A.; Claus, Richard O.; Vengsarkar, Ashish; Fogg, Brian R.; Greene, Jonathan A. (United States Patent and Trademark Office, 1993-05-04)
      Two-mode, elliptical-core optic fibers with a permanent photo-induced index change are used as sensors with sensitivity varying as a function of length. The optic fiber sensors act as vibrational-mode filters thereby ...
    • Fiber-optic sensor or modulator using tuning of long period gratings with self-assembled layers 

      Virginia Tech Intellectual Properties, Inc.; Furukawa Electric North America; Wang, Zhiyong; Ramachandran, Siddharth; Heflin, Jr., James R. (United States Patent and Trademark Office, 2008-02-26)
      The provision of an ionic self-assembled multilayer (ISAM) film on a fiber-optic element including a long period grating (LPG) by a simple, room temperature process provides tuning of the LPG and/or high sensitivity to the ...
    • Fine powders of ketone-containing aromatic polymers and process of manufacture 

      Center for Innovative Technology; Virginia Polytechnic Institute and State University; Virginia Tech Intellectual Properties, Inc.; McGrath, James E.; Lyon, Keith R.; Davis, Richey M.; Texier, Anne; Gungor, Atilla (United States Patent and Trademark Office, 1994-10-18)
      Fine particles of semi-crystalline ketone-containing aromatic polymers (PEEK, PEKK, etc.) are produced by controlling the rate and conditions of hydrolysis of an amorphous polyarylketimine intermediate. The choice of acid ...
    • Flash evaporator 

      Virginia Tech Intellectual Properties, Inc.; Sharp Kabushiki Kaisha; Desu, Seshu B.; Ramanathan, Sasangan; Suchicital, Carlos (United States Patent and Trademark Office, 1999-03-23)
      A device and method for flash evaporating a reagent includes an evaporation chamber that houses a dome on which evaporation occurs. The dome is solid and of high thermal conductivity and mass, and may be heated to a ...
    • Flotation machine rotor 

      Virginia Tech Intellectual Properties, Inc.; Yoon, Roe-Hoan; Yang, Yihong; Luttrell, Gerald H.; Telionis, Demetri P.; Ragab, Saad; Said, Abdel-Halim; Miskovic, Sanja; Noble, Aaron (United States Patent and Trademark Office, 2016-02-23)
      A rotor for flotation machines or flotation cells of flotation machines includes blades that are configured to provide improved bubble flow and bubble generation performance while also reducing the power requirements for ...
    • Flotation machine rotor 

      Virginia Tech Intellectual Properties, Inc.; Yoon, Roe-Hoan; Yang, Yihong; Luttrell, Gerald H.; Telionis, Demetri P.; Ragab, Saad; Said, Abdel-Halim; Miskovic, Sanja; Noble, Aaron (United States Patent and Trademark Office, 2016-01-19)
      A rotor for flotation machines or flotation cells of flotation machines includes blades that are configured to provide improved bubble flow and bubble generation performance while also reducing the power requirements for ...
    • Formation of acyclic bis (reissert compounds) 

      Virginia Tech Intellectual Properties, Inc.; Gibson, Harry W.; Jois, Yajnanarayana H. (United States Patent and Trademark Office, 1991-02-26)
      Bis Reissert compounds can be formed by reaction of a cyanohydrin, formed by reaction of an aldehyde and a diamine, with benzoyl chloride in the presence of an amine acid acceptor.
    • Formation of poly(benzimidazole) 

      Virginia Tech Intellectual Properties, Inc.; Gibson, Harry W.; Jois, Yajnanarayana H. (United States Patent and Trademark Office, 1991-11-19)
      A poly Ressert can be formed by first reacting benzimidazole with an aliphatic diacid chloride to form bisbenzimidazole and then reacting the bisbenzimidazole with an aliphatic diacid chloride and cyanide to form the poly ...
    • Formation of reissert compound of benzoyl benzimidazole 

      Virginia Tech Intellectual Properties, Inc.; Gibson, Harry W.; Jois, Yajnanarayana H. (United States Patent and Trademark Office, 1991-03-19)
      The Reissert compound of 1-benzoylbenzimidazole can be formed by reaction of an acid chloride (e.g., benzoyl chloride) and cyanide (e.g., trimethylsilyl cyanide) with benzoyl benzimidazole. It has the formula: ##STR1## and ...
    • Formation of Reissert compound of bisbenzimidazole 

      Virginia Tech Intellectual Properties, Inc.; Gibson, Harry W.; Jois, Yajnanarayana H. (United States Patent and Trademark Office, 1991-06-04)
      A Reissert compound of bisbenzimidazole can be formed by first reacting benzimidazole with an aliphatic diacid chloride to form bisbenzimidazole and then reacting the bisbenzimidazole with an aliphatic acid chloride and ...
    • Formulated arthropod cadavers for pest suppression 

      The United States of America as represented by the Secretary of Agriculture; Virginia Tech Intellectual Properties, Inc.; McGuire, Michael R.; Behle, Robert W.; Shapiro, David I.; Lewis, Edwin E. (United States Patent and Trademark Office, 2003-02-25)
      Pesticidal and/or antimicrobial biological agent-infected arthropod cadavers are formulated by applying a coating agent once on the surface of the cadaver which either (a) prevents the cadavers from sticking together and/or ...