Patents Assigned to Louisiana Tech University Research Foundation
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Patent number: 8507056Abstract: 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: GrantFiled: June 8, 2010Date of Patent: August 13, 2013Assignee: Louisiana Tech University Research Foundation, a division of Louisiana Tech University Foundation, Inc.Inventors: Yuri M. Lvov, Elshad Abdullayev
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Patent number: 8489635Abstract: 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: GrantFiled: January 13, 2010Date of Patent: July 16, 2013Assignee: Louisiana Tech University Research Foundation, a division of Louisiana Tech University Foundation, Inc.Inventors: Vir V Phoha, Shrijit S Joshi
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Patent number: 8473532Abstract: A method and apparatus to automatically organize computer files or web pages into meaning categories, to acquire new computer files or web pages, and to maintain the resulting organization in hierarchical directory tree structure. The method allows a user to provide a large number of unorganized files or an initial directory. The method partitions the unorganized files into hierarchically arranged categories that form an initial directory or allows a user to provide the initial directory. The method creates a description to summarize the contents of each of the categories in the directory. The method uses the descriptions in a classification step that assigns a newly given computer file to one of the categories. When the number of files in a category exceeds a user predefined limit, the method partitions some of the files into additional categories.Type: GrantFiled: August 12, 2004Date of Patent: June 25, 2013Assignee: Louisiana Tech University Research FoundationInventor: Chee Hung Ben
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Patent number: 8441255Abstract: 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: GrantFiled: January 22, 2010Date of Patent: May 14, 2013Assignee: Louisiana Tech University Research Foundation, a divison of Louisiana Tech University Foundation, Inc.Inventors: Despina Davis, Ramya Bellamkonda, Raja Sekharam Mannam
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Patent number: 8399527Abstract: 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 80° F. and about 200° F.Type: GrantFiled: March 17, 2010Date of Patent: March 19, 2013Assignee: Louisiana Tech University Research Foundation; a division of Louisiana Tech University Foundation, Inc.Inventors: Joshua Brown, John McDonald, Chester Wilson
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Patent number: 8377278Abstract: 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: GrantFiled: January 27, 2006Date of Patent: February 19, 2013Assignee: Louisiana Tech University Research Foundation; a division of Louisiana Tech University Foundation, Inc.Inventor: Henry E. Cardenas
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Publication number: 20130000987Abstract: A steerable ground piercing tool includes an elongated outer housing having a lengthwise extending bore and an inner assembly at least in part disposed within the outer housing. The inner assembly includes a rotatable chisel having a longitudinally extending shaft at least in part disposed within the housing bore. The chisel has a first end defining an asymmetric tip and a second end defining a first impact surface for receiving a reciprocating action impact to drive the tool through the ground. The inner assembly further includes a conversion mechanism to selectively convert upon activation thereof at least a first portion of the reciprocating action imparted to the first impact surface into combined reciprocation and rotation of the tool.Type: ApplicationFiled: September 4, 2012Publication date: January 3, 2013Applicant: Louisiana Tech University Research FoundationInventors: Erez N. Allouche, David Hall, Michael Swanbom, Slade Richard
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Patent number: 8256539Abstract: A steerable ground piercing tool includes an elongated outer housing having a lengthwise extending bore and an inner assembly at least in part disposed within the outer housing. The inner assembly includes a rotatable chisel having a longitudinally extending shaft at least in part disposed within the housing bore. The chisel has a first end defining an asymmetric tip and a second end defining a first impact surface for receiving a reciprocating action impact to drive the tool through the ground. The inner assembly further includes a conversion mechanism to selectively convert upon activation thereof at least a first portion of the reciprocating action imparted to the first impact surface into combined reciprocation and rotation of the tool.Type: GrantFiled: July 30, 2009Date of Patent: September 4, 2012Assignee: Louisiana Tech University Research FoundationInventors: Erez N. Allouche, David Hall, Michael Swanbom, Slade Richard
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Patent number: 8173578Abstract: A bioherbicide and method of use utilizing the fungus Myrothecium verrucaria for controlling Salvinia molesta. In typical applications, the fungus is applied with an adjuvant to Salvinia molesta in amounts effective to kill or suppress the Salvinia molesta. A strain of Myrothecium verrucaria is on deposit with the Department of Biological Sciences, Louisiana Tech University in Ruston, La., and with the patent collection of the International Mycological Institute in Surrey, United Kingdom, where it has been assigned deposit number IMI 368023.Type: GrantFiled: December 18, 2009Date of Patent: May 8, 2012Assignee: Louisiana Tech University Research FoundationInventors: Harrell L. Walker, Lawrence R. Higginbotham, James A. Young
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Publication number: 20110297038Abstract: 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: ApplicationFiled: June 8, 2010Publication date: December 8, 2011Applicant: LOUISIANA TECH UNIVERSITY RESEARCH FOUNDATIONInventors: Yuri M. Lvov, Elshad Abdullayev
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Publication number: 20110038939Abstract: Stable colloid 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: ApplicationFiled: July 16, 2008Publication date: February 17, 2011Applicants: NORTHEASTERN UNIVERSITY, Louisiana Tech University Research Foundation, a division of Louisiana Tech University FoundationInventors: Yuri Lvov, Vladimir Torchilin, Anshul Agarwal
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Patent number: 7746451Abstract: On-chip microplasma discharge devices capable of producing light, including ultraviolet light, capable of detecting atomic and molecular gas, and capable of detecting atomic and molecular contaminants in water samples. The on-chip microplasma discharge devices utilize nanoparticles or magnets to tune or confine microplasma discharges generated by electrodes delivering a voltage to the device. Selective control of the gaseous pressure at a value between atmospheric pressure and a vacuum pressure allows for further refinement of gas or contaminant detection, or for further tuning of the wavelength of the light to be produced.Type: GrantFiled: January 18, 2007Date of Patent: June 29, 2010Assignee: Louisiana Tech University Research Foundation, A Division of Louisiana Tech University FoundationInventors: Chester Wilson, John W. Sweeney, Kalyani Peri, Rajesh Yalavarthy
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Patent number: 7662911Abstract: Disclosed herein is a method of making a film, the method comprising depositing a first layer polyelectrolyte on a surface of a substrate to form a first layer; and depositing a second layer polyelectrolyte on the first layer polyelectrolyte to form a second layer. The first layer polyelectrolyte, the second layer polyelectrolyte, or both, is deposited on the substrate in the presence of a polymeric precipitant; and the first layer polyelectrolyte and the second layer polyelectrolyte have net charges of opposite polarity. Also disclosed are methods of improving bioactive molecule retention during fabrication of a polyelectrolyte multilayer film.Type: GrantFiled: November 13, 2006Date of Patent: February 16, 2010Assignee: Louisiana Tech University Research FoundationInventors: Donald T. Haynie, Zheng-liang Zhi
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Patent number: 7359124Abstract: A variable focal length microlens system having a base section with a fluid chamber and a fluid pressurization mechanism. A flexible, substantially transparent polymer lens section is fixed above the fluid chamber and the lens section has a curvature providing an initial focal point when in an unstrained state. The fluid chamber is substantially sealed and the fluid pressurization mechanism includes a flexible wall in the base section. The flexible wall may be displaced by magnetic activation, PZT activation of another activating mechanism.Type: GrantFiled: April 30, 2005Date of Patent: April 15, 2008Assignee: Louisiana Tech University Research Foundation as a division of the Louisiana Tech University FoundationInventors: Ji Fang, Jackie Chen, Weisong Wang, Kody Varahramyan, R. Alfred Gunasekaran, Mangilal Agarwal
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Patent number: 7359563Abstract: The invention is a process to compare two digital images (and usually more) and to identify objects in each image. After object identification, object descriptors are formed. The object descriptors of the objects in one frame are compared to those of objects in the second frame, allowing the tracking of an object in the two frames. The movement of each tracked object within the two frames is quantified, and the second frame is corrected to account for the object's movement.Type: GrantFiled: April 5, 2004Date of Patent: April 15, 2008Assignees: Louisiana Tech University Research Foundation, The Board of Supervisors of LSUInventors: Sumeet Dua, Roger W. Beuerman
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Patent number: 7303156Abstract: A micro-nozzle for generating micro-bubbles. The micro-nozzle includes a liquid inlet forming a liquid path, a gas inlet, and a constricting wall positioned in the liquid path and shaped to abruptly constrict said liquid path to a width of less than approximately 20 um and then gradually diverge.Type: GrantFiled: May 18, 2004Date of Patent: December 4, 2007Assignee: Louisiana Tech University Research Foundation as a Division of the Louisiana Tech University FoundationInventors: Sung Sam Kim, Roy Schubert
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Patent number: 7191178Abstract: The invention is a method of allocating a computer to service a request for a data set in a system having a plurality of computers. The method is implemented on a neural having at an input layer having input nodes and an output layer having output nodes, where each output node is associated with a specific computer. Connecting the input nodes to the output nodes are weights w(j,k). Each output node is associated with a computer in the system, and the inputs to the input nodes are dependent upon the number of requests for specific pages.Type: GrantFiled: February 11, 2002Date of Patent: March 13, 2007Assignees: Louisiana Tech University Research Foundation, The Board of Supervisors of LSUInventors: Vir V. Phoha, Sitharama S. Iyengar, Rajgopal Kannan
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Patent number: 7134082Abstract: A method for individualizing an Internet/Intranet global directory and for adaptively changing the global directory structure based upon the individual alterations of multiple users. The method provides a default computer directory of prearranged files on a server computer. Client directory customization data is then provided to the server computer. With this information, the default directory is reconfigured into an individualized Internet/Intranet directory by modifying a copy of the default Internet/Intranet directory based upon the directory customization data. Further aspects include the step of updating the client directory customization data based upon user inputs; the step of collecting a history of client directory customization data; or the step of updating the default computer directory based on a history of client customization data.Type: GrantFiled: December 4, 2001Date of Patent: November 7, 2006Assignee: Louisiana Tech University Research Foundation as a division of the Louisiana Tech University FoundationInventor: Chee Hung Ben Choi
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Patent number: 7090783Abstract: A method of patterning self-assembled thin films, including forming a photoresist layer on a substrate and then patterning and etching the photoresist layer. In combination with the etched photoresist layer, a self-assembled layer is formed on the substrate using LbL self-assembly.Type: GrantFiled: March 13, 2003Date of Patent: August 15, 2006Assignee: Louisiana Tech University Research Foundation as a Division of the Louisiana Tech University FoundationInventors: Tianhong Cui, Yuri Lvov, Feng Hua