Now showing items 405-424 of 619

    • Nonlinear active control of dynamical systems 

      Virginia Tech Intellectual Properties, Inc.; Nayfeh, Ali Hasan; Mook, Dean Tritschler; Henry, Ryan James; Masoud, Zivad Navif (United States Patent and Trademark Office, 2006-05-16)
      A control system for reducing cargo pendulation. The control system calculates a correction factor and adds the correction factor for the operator input motions in addition to the motion of the platform in order to provide ...
    • Novel mine-terminated poly(arylene ether phosphine oxide) oligomer 

      Virginia Tech Intellectual Properties, Inc.; McGrath, James E.; Smith, Carrington Duane (United States Patent and Trademark Office, 1992-01-07)
      Amine-terminated poly(arylene ether phosphine oxide) oligomers of the general formula ##STR1## where Ar' is phenyl, biphenyl, bisphenol-A, etc., can be formed by reaction of a bisphenol monomer, a dihalo triphenyl phosphine ...
    • Novel phosphorus containing epoxy networks 

      Virginia Tech Intellectual Properties, Inc.; McGrath, James E.; Gungor, Attila (United States Patent and Trademark Office, 1990-11-27)
      Epoxy resins can be cured or crosslinked with triphenyl phosphine oxide compounds having epoxy-reactive (active hydrogen) substituents either alone or in combination with amine-terminated polyarylene ethers (e.g., ...
    • Novel phosphorus containing epoxy networks based on trihydrocarbyl phosphine oxides having active substituents 

      Virginia Tech Intellectual Properties, Inc.; McGrath, James E.; Gungor, Attila (United States Patent and Trademark Office, 1992-02-04)
      Epoxy resins can be cured or crosslinked with trihydrocarbyl phosphine oxide compounds having epoxy-reactive (active hydrogen) substituents either alone or in combination with amine-terminated polyarylene ethers (e.g., ...
    • Nuclear magnetic resonance tube cleaner 

      Virginia Tech Intellectual Properties, Inc.; Van Damme, Frans M. (United States Patent and Trademark Office, 2004-05-25)
    • One-way packet communication channel with retransmissions 

      Virginia Tech Intellectual Properties, Inc.; Davidson, Boris; Bostian, Charles W. (United States Patent and Trademark Office, 2001-06-12)
      A random access technique for one way channels. With the apparatus and method of this system, each user sends an initial message of stated length to a central receiver. The message is then retransmitted a specified number ...
    • Ophthalmic contact lens with internal fixation light for examination of the optic nerve 

      Center for Innovative Technology; Virginia Commonwealth University; Virginia Polytechnic Institute and State University; Murphy, Kent A.; Richards, David W. (United States Patent and Trademark Office, 1991-06-18)
      An instrument and method for examining the optic nerve head (34) of a patient's eye (14) is disclosed. The instrument is comprised of a gonioscopic lens (10) a lens system (26) where the lens system (26) directs a collimated ...
    • Optic devices formed from melt processable thermoplastic materials having a high refractive index 

      Innotech, Inc., Johnson & Johnson Vision Care; Virginia Tech Intellectual Properties, Inc.; McGrath, James E.; Sekharipuram, Venkateshwaran N. (United States Patent and Trademark Office, 1999-12-28)
      This invention relates generally to optic devices such as ophthalmic lenses, lens blanks, and lens preforms, made from a thermoplastic material of a specific formula and a process for forming the same.
    • Optical fiber pressure and acceleration sensor fabricated on a fiber endface 

      Virginia Tech Intellectual Properties, Inc.; Wang, Anbo; Zhu, Yizheng; Wang, Xingwei; Xu, Juncheng (United States Patent and Trademark Office, 2006-05-30)
      A fiber optic sensor has a hollow tube bonded to the endface of an optical fiber, and a diaphragm bonded to the hollow tube. The fiber endface and diaphragm comprise an etalon cavity. The length of the etalon cavity changes ...
    • Optical fiber sensors based on pressure-induced temporal periodic variations in refractive index 

      Virginia Tech Intellectual Properties, Inc.; Wang, Anbo (United States Patent and Trademark Office, 2006-11-21)
      A optical fiber sensor for measuring temperature and/or pressure employs temporally created long period gratings. The gratings may be produced by a periodic change in the refractive index of the fiber along the fiber ...
    • Optical fiber sensors for harsh environments 

      Virginia Tech Intellectual Properties, Inc.; Wang, Anbo; Xu, Juncheng (United States Patent and Trademark Office, 2007-02-06)
      A diaphragm optic sensor comprises a ferrule including a bore having an optical fiber disposed therein and a diaphragm attached to the ferrule, the diaphragm being spaced apart from the ferrule to form a Fabry-Perot cavity. ...
    • Optical fiber with quantum dots 

      Virginia Tech Intellectual Properties, Inc.; Lambda Instruments, Inc.; Holton, Carvel E.; Herz, Erik; Meissner, II, Kenith; Paye, Corey (United States Patent and Trademark Office, 2006-11-28)
      Holey optical fibers (e.g. photonic fibers, random-hole fibers) are fabricated with quantum dots disposed in the holes. The quantum dots can provide light amplification and sensing functions, for example. When used for ...
    • Optical fiber with quantum dots 

      Virginia Tech Intellectual Properties, Inc.; Lambda Instruments, Inc.; Holton, Carvel E.; Herz, Erik; Meissner, II, Kenith; Paye, Corey (United States Patent and Trademark Office, 2006-05-30)
      Holey optical fibers (e.g. photonic fibers, random-hole fibers) are fabricated with quantum dots disposed in the holes. The quantum dots can provide light amplification and sensing functions, for example. When used for ...
    • Optical fiber with quantum dots 

      Virginia Tech Intellectual Properties, Inc.; Lambda Instruments, Inc.; Holton, Carvel E.; Herz, Erik; Meissner, II, Kenith; Paye, Corey (United States Patent and Trademark Office, 2008-04-22)
      Holey optical fibers (e.g. photonic fibers, random-hole fibers) are fabricated with quantum dots disposed in the holes. The quantum dots can provide light amplification and sensing functions, for example. When used for ...
    • Optimal trajectory control for LLC resonant converter for LED PWM dimming 

      Virginia Polytechnic Institute and State University; Lee, Fred C.; Ji, Shu; Feng, Weiyi (United States Patent and Trademark Office, 2016-03-01)
      Pulse width modulation is provided for controlling a resonant power converter, particularly for dimming of light emitting diode arrays without loss of efficiency. Dynamic oscillation due to the beginning of a pulse width ...
    • Optimal trajectory control for LLC resonant converter for soft start-up 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Feng, Weiyi (United States Patent and Trademark Office, 2016-04-19)
      By setting switching instants of a switching circuit of a resonant power converter based on current in a resonant circuit reaching a current limit of a current limitation band, soft start-up of the power converter can be ...
    • Oral treatment of hemophilia 

      The United States of America as represented by the Department of Health and Human Services; Virginia Tech Intellectual Properties, Inc.; Velander, William H.; Matzinger, Polly; Alpan, Oral; Kamala, Tirumalai (United States Patent and Trademark Office, 2007-05-22)
      Disclosed herein is a simple method for the treatment of antigen-deficiency diseases, by orally administering to a subject a therapeutically effective amount of the deficient antigen, wherein the antigen is not present in ...
    • Osmotic bioelectrochemical systems 

      He, Z (2013-01-17)
      A bioelectrochemical system includes an anode, a saline solution chamber, and a cathode. The anode is at least partially positioned within an anode chamber containing an aqueous reaction mixture including one or more organic ...
    • Over-expressing homologous antigen vaccine and a method of making the same 

      The Regents of the University of California; Virginia Tech Intellectual Properties, Inc.; Boyle, Stephen M.; Cravero, Silvio; Corbeil, Lynette B.; Schurig, Gerhardt G.; Srirnaganathan, Nammalwar; Vemulapalli, Ramesh (United States Patent and Trademark Office, 2000-11-21)
      This invention relates to an over-expressing homologous antigen vaccine, a method of producing the same, and use of the vaccine for prophylaxis or treatment of vertebrates at risk of or suffering from disease caused by a ...
    • Over-expressing homologous antigen vaccine and a method of making the same 

      The Regents of the University of California; Virginia Tech Intellectual Properties, Inc.; Boyle, Stephen M.; Cravero, Silvio; Corbeil, Lynette B.; Schurig, Gerhardt G.; Srirnaganathan, Nammalwar; Vemulapalli, Ramesh (United States Patent and Trademark Office, 2004-11-02)
      This invention relates to an over-expressing homologous antigen vaccine, a method of producing the same, and use of the vaccine for prophylaxis or treatment of vertebrates at risk of or suffering from disease caused by a ...