Patents Assigned to Louisiana Tech University Foundation, Inc.
  • Patent number: 9581691
    Abstract: An object detection system (24) is disclosed having a transducer (40, 40?) for detecting buried objects (26). The transducer is encapsulated within a robust, electromagnetically transparent construction (42).
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: February 28, 2017
    Assignees: Deere & Company, Louisiana Tech University Research Foundation, A Division Of Louisiana Tech University Foundation, Inc.
    Inventors: Neven Simicevic, Arun Jaganathan, James L. Montgomery, Jay H. Olson
  • Patent number: 9151837
    Abstract: A method of surveying the condition of an underground conduit by positioning a propelled carriage assembly within the underground conduit. The carriage assembly includes (i) at least one transmitter/receiver unit capable of transmitting a pulsed signal toward at least a portion of an inner wall of the conduit, and (ii) a secondary sensor positioned on the carriage assembly. The data derived from the pulsed signal at a given lateral location within an underground conduit is read as is a secondary sensor condition derived from secondary sensor data taken at the given lateral location. Then it is determined whether the secondary sensor condition indicates a basis for a false void detection by the data derived from the pulsed signal and if the basis for false void detection exists, providing an indication of such basis.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: October 6, 2015
    Assignee: Louisiana Tech University Research Foundation; a Division of Louisiana Tech University Foundation, Inc.
    Inventors: Arun Prakash Jaganathan, Erez N. Allouche
  • Patent number: 9150459
    Abstract: A method and apparatus for strengthening cementitious concrete by placing a nanoparticle carrier liquid in contact with a first surface of a concrete section and inducing a current across the concrete section at sufficient magnitude and for sufficient time that nanoparticles in the nanoparticle carrier liquid migrate through a significant depth of the concrete section.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: October 6, 2015
    Assignee: Louisiana Tech University Foundation, Inc.
    Inventor: Henry E Cardenas
  • Patent number: 9103654
    Abstract: A magnetic position sensor having at least one magnetic field sensor including a solidified layer of GMR nanowire carrier fluid formed on a substrate material. The solidified layer of carrier fluid has (i) discrete GMR nanowires each having a diameter of less than about 0.5 um and a length less than about 250 um; and (ii) a concentration of GMR nanowires in the dried layer between about 0.001 and about 10 percent by weight of the solution. The position sensor further includes a detection circuit capable of detecting a change in resistance of the magnetic field sensor.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 11, 2015
    Assignee: Louisiana Tech University Research Foundation, a division of Louisiana Tech University Foundation, Inc.
    Inventor: Bryan Cox
  • Patent number: 9064159
    Abstract: At least two biometric measurements of a person are collected, then a statistical measure based on the measurements is computed. The statistical measure is a bounded estimate of the discriminative power of a test based on the measurements. While the discriminative power is less than a target value, additional biometric measurements are collected. When enough measurements have been collected, a biometric template is constructed from the measurements and stored for use in future identifications. Systems and software to implement similar methods are also described and claimed.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: June 23, 2015
    Assignee: Louisiana Tech University Foundation, Inc.
    Inventor: Vir V. Phoha
  • Patent number: 9000768
    Abstract: A method of surveying the condition of an underground enclosure including the steps of: (a) positioning at least one transmitter/receiver unit (including an antenna) within an underground, substantially nonconductive enclosure, such that a substantial air gap exists between the antenna and the inner wall of the enclosure; (b) transmitting an ultra wideband (UWB) signal toward at least a portion of the inner wall; and (c) processing the return signal in order to identify the interface between the soil and a region of conductivity different from the soil.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: April 7, 2015
    Assignee: Louisiana Tech University Research Foundation; a division of Louisiana Tech University Foundation, Inc.
    Inventors: Erez Allouche, Arun Prakash Jaganathan, Neven Simicevic
  • Patent number: 8901802
    Abstract: An energy harvesting device capable of harvesting multiple forms of energy. The device includes a base, a piezoelectric cantilever, and a carbon nanotube film. The piezoelectric cantilever includes a piezoelectric layer disposed between a top electrode and a bottom electrode. A proximate end of the piezoelectric cantilever is supported by the base. The base does not support a distal end of the piezoelectric cantilever. The piezoelectric cantilever is capable of converting vibration energy into electrical power. The carbon nanotube film is capable of absorbing electromagnetic radiation and thermal radiation, and thereafter transmitting heat to the piezoelectric layer. The piezoelectric layer is mechanically deformed in response to said heating, thereby generating electrical power.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: December 2, 2014
    Assignee: Louisiana Tech University Research Foundation, a division of Louisiana Tech University Foundation Inc.
    Inventor: Long Que
  • Patent number: 8895631
    Abstract: A Fischer-Tropsch process including the steps of providing a reactor having a substrate element with a surface and a plurality of elongated micro-structures of catalyst material attached to the substrate surface The catalyst material includes at least one of cobalt, iron, or ruthenium and the micro-structures have a width of less than about 1 um and a length at least five times the width. A carbon compound and hydrogen are injected into the reactor such that at least a portion of the carbon compound and hydrogen contact the catalyst material. The carbon compound and hydrogen are reacted with the catalyst at a temperature between about 150° F. and about 400° F.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: November 25, 2014
    Assignee: Louisiana Tech University Research Foundation; a division of Louisiana Tech University Foundation, Inc.
    Inventors: Chester Wilson, John McDonald, Joshua Brown
  • Patent number: 8873033
    Abstract: A cured-in-place-pipe (CIPP) liner inspection system used to inspect a resin level in a CIPP liner that has been impregnated with resin using an inspection chamber having an optical sensor. The CIPP liner inspection system is also used to identify zones within an installed CIPP liner having lower mechanical strength due to inadequate distribution of resin using a robotic unit having an optical sensor. The optical sensor measures an optical property, which is used to determine a resin level or a mechanical property based on predetermined correlations between the optical property and the resin level and predetermined correlations between the optical property and the mechanical property.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: October 28, 2014
    Assignee: Louisiana Tech University Research Foundation a division of Louisiana Tech University Foundation Inc.
    Inventors: Erez Allouche, Shaurav Alam
  • Patent number: 8764938
    Abstract: A method is provided for making “smart” paper and “smart” microfibers by means of nanotechnology layer-by-layer techniques. The method comprises forming an aqueous pulp of lignocellulose fibers and nanocoating it by alternatively adsorbing onto the fibers multiple consecutively-applied layers of organized ultra thin and oppositely-charged polyelectrolytes, at least one of which is an electrically conductive polymer or nanoparticle (or a magnetically active polymer or nanoparticle, or an optically active polymer or nanoparticle), and another one of which has a charge opposite of said electrically conductive polymer or nanoparticle (or magnetically active polymer or nanoparticle, or optically active polymer or nanoparticle), thereby making a modified aqueous pulp of electrically conductive (or magnetically active, or optically active) multi-layer nanocoated lignocellulose fibers.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: July 1, 2014
    Assignee: Louisiana Tech Research Foundation; a Division of Louisiana Tech University Foundation, Inc.
    Inventors: Mangilal Agarwal, Yuri M. Lvov, Khodadad Varahramyan
  • Patent number: 8736452
    Abstract: A chipless RFID tag system having a transmitter sending an input signal and a tag substrate. An ID generation circuit on the tag relies on microstrip transmission line patterns which are pre-designed to generate a unique code. The ID generating circuit may be designed based upon the transmission line properties, including signal delay, and/or reflection, and/or phase change. The tag may be formed on a flexible substrate having at least one microstrip and the microstrip having a first portion with a first impedance and a second portion with a second impedance different from the first impedance. The tag may further include a microstrip antenna for communication with the transmitter and a receiver system. The tag may also include sensors for detection of desired substances of interest. The system may further include a receiver detecting at least two reflections from an interface of first and second impedances and identifying relative time domain positions of the reflections to one another.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: May 27, 2014
    Assignee: Louisiana Tech University Research Foundation; a division of Louisiana Tech University Foundation, Inc.
    Inventors: Khodadad Varahramyan, Mangilal Agarwal, Sudhir Shrestha, Jeevan Kumar Vemagiri, Aravind Chamarti, Sireesha Ramisetti, Mercyma Dee Balachandran
  • Patent number: 8685538
    Abstract: Stable nanoparticles comprising poorly soluble drugs are disclosed, as well as methods of making and methods of using such nanoparticles, e.g., as therapeutics and diagnostics.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: April 1, 2014
    Assignees: Northeastern University, Louisiana Tech University Research Foundation, a Division of Louisiana Tech University Foundation, Inc.
    Inventors: Vladimir Torchilin, Yuri Lvov, Zhiguo Zheng
  • Publication number: 20140056488
    Abstract: At least two biometric measurements of a person are collected, then a statistical measure based on the measurements is computed. The statistical measure is a bounded estimate of the discriminative power of a test based on the measurements. While the discriminative power is less than a target value, additional biometric measurements are collected. When enough measurements have been collected, a biometric template is constructed from the measurements and stored for use in future identifications. Systems and software to implement similar methods are also described and claimed.
    Type: Application
    Filed: November 1, 2013
    Publication date: February 27, 2014
    Applicant: Louisiana Tech University Foundation, Inc.
    Inventor: Vir V. Phoha
  • Patent number: 8629189
    Abstract: A Fischer-Tropsch process including the steps of providing a reactor having a substrate element with a surface and a plurality of elongated micro-structures of catalyst material attached to the substrate surface The catalyst material includes at least one of cobalt, iron, or ruthenium and the micro-structures have a width of less than about 1 um and a length at least five times the width. A carbon compound and hydrogen are injected into the reactor such that at least a portion of the carbon compound and hydrogen contact the catalyst material. The carbon compound and hydrogen are reacted with the catalyst at a temperature between about 150° F. and about 400° F.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: January 14, 2014
    Assignee: Louisiana Tech University Research Foundation, a Division of Louisiana Tech University Foundation, Inc.
    Inventors: Chester Wilson, John McDonald, Joshua Brown
  • Patent number: 8600119
    Abstract: At least two biometric measurements of a person are collected, then a statistical measure based on the measurements is computed. The statistical measure is abounded estimate of the discriminative power of a test based on the measurements. While the discriminative power is less than a target value, additional biometric measurements are collected. When enough measurements have been collected, a biometric template is constructed from the measurements and stored for use in future identifications. Systems and software to implement similar methods are also described and claimed.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: December 3, 2013
    Assignee: Louisiana Tech University Foundation, Inc.
    Inventor: Vir V. Phoha
  • Publication number: 20130230380
    Abstract: The invention is a new turbine structure having a housing that rotates. The housing has a sidewall, and turbine blades are attached to a sidewall portion. The turbine may be completely open in the center, allowing space for solids and debris to be directed out of the turbine without jamming the spinning blades/sidewall. The turbine may be placed in a generator for generation of electrical current.
    Type: Application
    Filed: April 19, 2013
    Publication date: September 5, 2013
    Applicant: Louisiana Tech Research Foundation; A Division of Louisiana Tech University Foundation, Inc.
    Inventor: Louisiana Tech Research Foundation; A Division of Louisiana Tech University Foundation, Inc.
  • Patent number: 8512468
    Abstract: A geopolymer mortar formed by mixing about 35% to about 45% by weight pozzolanic material, about 35% to about 45% by weight silicon oxide source, about 15% to about 20% by weight alkaline activator solution, and about 0.3% to about 2.5% by weight copper ion source. The pozzolanic material may be fly ash and the silicon oxide source may be sand. The alkaline activator solution may be a sodium hydroxide solution containing sodium silicate. The geopolymer mortar may have a viscosity in the range of about 25,000 to about 50,000 centipoise. The geopolymer mortar may be formed by further mixing one or more additives, such as surfactants, thermal spheres, anti-sagging agents, adhesion primers, or fibers. The geopolymer mortar may be applied as a protective coating on a surface of a structure.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: August 20, 2013
    Assignee: Louisiana Tech University Research Foundation, a division of Louisiana Tech University Foundation, Inc.
    Inventors: Erez Allouche, Carlos Montes
  • Patent number: 8507056
    Abstract: A corrosion inhibiting structure includes a mineral tubule having a first end, a second end, and a lumen extending from the first end to the second end. The lumen terminates in a first opening at the first end and a second opening at the second end. The corrosion inhibiting structure also includes an anticorrosion deposit disposed within the lumen, and first and second precipitate stoppers covering the first and second openings, respectively. A coating composition includes a population of corrosion inhibiting structures and a coating material. A method of inhibiting corrosion includes loading anticorrosion agent deposits into lumens, forming stoppers at first and second openings by mixing loaded mineral tubules with a solution containing a predetermined concentration of transition metal ions, mixing the loaded mineral tubules having stoppers with a coating material to form a composite material, and applying the composite material to a metal surface.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: August 13, 2013
    Assignee: Louisiana Tech University Research Foundation, a division of Louisiana Tech University Foundation, Inc.
    Inventors: Yuri M. Lvov, Elshad Abdullayev
  • Patent number: 8489635
    Abstract: A method of identifying a user as an authorized user from free test text typed by that user into an input device. From the received test text, features associated with the typed text are extracted, such as timing data associated with alphanumeric letter pairs. These extracted features are compared to previously stored series of authorized user profiles, where the authorized user profiles were generated from a trial typing sample of alphanumeric data from each associated authorized user. The comparison identifies one of the authorized users with the user, and a score is derived to measure the strength of the comparison. If the score exceeds a threshold level, the user is identified as that authorized user.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: July 16, 2013
    Assignee: Louisiana Tech University Research Foundation, a division of Louisiana Tech University Foundation, Inc.
    Inventors: Vir V Phoha, Shrijit S Joshi
  • Patent number: 8441255
    Abstract: A thermoelectrically cooled GMR sensor having a first thermoelectric layer with an array of nanowires, wherein the nanowires include a diameter of about 1 nanometer to about 1000 nanometers. A plurality of alternating layers of magnetic and nonmagnetic material are positioned over and extend the nanowires to form a GMR assembly. A second thermoelectric layer is positioned over the GMR assembly and extends the nanowires, such that the nanowires have a length of between about 100 nanometers and about 500 microns. Conductors are placed in contact with the first and second thermoelectric layers for connecting the thermoelectric layers to a voltage source.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: May 14, 2013
    Assignee: Louisiana Tech University Research Foundation, a divison of Louisiana Tech University Foundation, Inc.
    Inventors: Despina Davis, Ramya Bellamkonda, Raja Sekharam Mannam