Patents Assigned to University of Dayton
  • Patent number: 8895105
    Abstract: A method of growing carbon nanomaterials on a substrate wherein the substrate is exposed to an oxidizing gas; a seed material is deposited on the substrate to form a receptor for a catalyst on the surface of said substrate; a catalyst is deposited on the seed material by exposing the receptor on the surface of the substrate to a vapor of the catalyst; and substrate is subjected to chemical vapor deposition in a carbon containing gas to grow carbon nanomaterial on the substrate.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: November 25, 2014
    Assignee: University of Dayton
    Inventors: Khalid Lafdi, Lingchuan Li, Matthew C. Boehle, Alexandre Lagounov
  • Publication number: 20140196489
    Abstract: Control methods for vapor compression systems and multiple-load vapor compression systems having one or more refrigeration loops include selecting a desired set-point temperature range for a load temperature at one or more load locations. The vapor compression system is then operated to transfer heat from the one or more load locations to a rejection location. While the vapor compression system is operating, a control apparatus continually adjusts various parameters. A capacity of an adjustable-capacity compressor is adjusted to maintain with respect to an evaporator load a maximum low-side pressure of the refrigeration loop as measured by a first sensor. An adjustable rejection capacity of a rejection apparatus is adjusted to maintain a minimum high-side pressure of the refrigeration loop as measured by a second sensor. An adjustable opening of an expansion valve is adjusted to maintain a load temperature measured by the third sensor within the desired set-point temperature range.
    Type: Application
    Filed: January 13, 2014
    Publication date: July 17, 2014
    Applicant: UNIVERSITY OF DAYTON
    Inventors: Stephen M. Emo, Travis Michalak
  • Patent number: 8624118
    Abstract: A water-soluble polymer coating for application to electrical wiring used in aircraft and other electrical structures is provided. The coating includes a water-soluble polymer such as polyvinyl acetate, polyvinyl alcohol, and methyl cellulose which is dissolved in water to form a solution. The solution may be applied to electrical wiring during manufacturing and dried to a film such that if the wire becomes damaged and exposed to water, a protective water-insoluble deposit is formed on the wiring. Alternatively, the solution may be applied to wiring which is already damaged to form a protective water-insoluble deposit.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: January 7, 2014
    Assignee: University of Dayton
    Inventor: Robert E. Kauffman
  • Publication number: 20130342289
    Abstract: A parallel capacitor varactor shunt switch device may include a shunt layer, a coplanar waveguide (CPW) layer, and a tunable thin film dielectric layer that is interposed between the shunt layer and the CPW layer. The tunable thin film dielectric layer electrically isolates the shunt layer from the CPW layer. The shunt layer includes a plurality of parallel shunt lines. The CPW layer includes a CPW signal transmission line with two CPW ground lines parallel to the CPW signal transmission line. A plurality of varactor areas equal in number to the plurality of parallel shunt lines are defined in the CPW signal transmission line, each varactor area corresponding to an overlap of the CPW signal transmission line with a respective shunt line and each respective parallel shunt line and its corresponding varactor area defines a capacitor.
    Type: Application
    Filed: June 26, 2012
    Publication date: December 26, 2013
    Applicant: University of Dayton
    Inventor: Guru Subramanyam
  • Publication number: 20130272809
    Abstract: Nonmetallic tools such as rotary bits, circular blades, and scything tools are described that may be suitable for removing cured flexibilized epoxy gap-filler materials from gaps between soft composite materials. The nonmetallic tools may be formed from various plastic or composite materials that are sufficiently hard to cut through the gap-filler material while being sufficiently soft to avoid damaging adjacent areas of soft composite materials. Methods for using the nonmetallic tools may include attaching the nonmetallic tools to a suitable machine-driven tool and contacting the nonmetallic tools to a material to be cut, shaped, or drilled.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 17, 2013
    Applicant: UNIVERSITY OF DAYTON
    Inventors: Paul K. Childers, JR., Ryan P. Osysko
  • Patent number: 8551456
    Abstract: A combination therapy for treating a bacterial biofilm comprises a therapeutically effective amount of an antibiotic comprising an aminoglycoside or tetracycline, or a combination of two or more thereof, and a cationic porphyrin in an amount effective for enhancing the effectiveness of the antibiotic in treating the bacterial biofilm. A method of treating a bacterial biofilm comprising Pseudomonas aeruginosa comprises contacting the bacterial biofilm with a combination therapy comprising a therapeutically effective amount of an antibiotic, and a cationic porphyrin in an amount effective for enhancing the effectiveness of the antibiotic in treating the bacterial biofilm. A method of treating a bacterial biofilm comprising Pseudomonas aeruginosa in a patient comprises administering to the patient a combination therapy comprising a therapeutically effective amount of an antibiotic, and a cationic porphyrin in an amount effective for enhancing the effectiveness of the antibiotic in treating the bacterial biofilm.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: October 8, 2013
    Assignee: University of Dayton
    Inventors: Jayne Robinson, Tracy Collins
  • Publication number: 20130251968
    Abstract: Disclosed are articles comprising layered nanocrystalline calcite and methods for forming nanocrystalline calcite layers and compositions comprising nanocrystalline calcite layers.
    Type: Application
    Filed: May 15, 2013
    Publication date: September 26, 2013
    Applicants: UNIVERSITY OF DAYTON, CLEMSON UNIVERSITY
    Inventors: Andrew S. Mount, Neeraj V. Gohad, Douglas C. Hansen, Karolyn Mueller Hansen, Mary Beth Johnstone
  • Patent number: 8536299
    Abstract: Rigid-rod copolymer compositions incorporating PBO (poly(p-phenylenebenzobisoxazole)), DiOH-PBO (poly(2,5-dihydroxy-1,4-phenylenebenzobisoxazole), DiOH-PBI (poly(2,5-dihydroxy-1,4-phenylenebenzobisimidazole)), DiOH-PyBI (poly(2,5-dihydroxy-1,4-phenylenepyridobisimidazole), PBZT (poly(p-phenylenebenzobisthiazole)) and its corresponding dihydroxy analogues attached to a flexibilizing hexafluoroisopropylidene linkage are described. Also described are their fabrication into fibers by a dry jet wet spinning technique and the measured fiber mechanical properties. The copolymer compositions are highly flame-resistant and have potential utility for fire-protective clothing.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: September 17, 2013
    Assignee: University of Dayton
    Inventors: Thuy D. Dang, Zongwu Bai, Narayanan Venkat, Alexander B. Morgan
  • Publication number: 20130141295
    Abstract: A coplanar waveguide (CPW) square-ring slot antenna for use in wireless communication systems is miniaturized and reconfigurable by the integration of ferroelectric (FE) BST (barium strontium titanate) thin film varactors therein. The slot antenna device includes a sapphire substrate, top and bottom metal layers, and a thin ferroelectric BST film layer, where the FE BST varactors are integrated at the back edge of the antenna on the top metal layer.
    Type: Application
    Filed: June 6, 2012
    Publication date: June 6, 2013
    Applicant: UNIVERSITY OF DAYTON
    Inventors: Hai Jiang, Guru Subramanyam
  • Publication number: 20130109893
    Abstract: Fuel compositions containing an isomerized component of a single carbon number may contain at least 97 wt. %, based on the total weight of the fuel composition, of an isomerized component consisting of aliphatic paraffin isomers all having the formula CnH2n+2, where 10?n?22 and n has the same value for each aliphatic paraffin isomer in the isomerized component. The fuel compositions have a normal alkane content of less than 10 wt. %, based on the total weight of the fuel composition. Methods for preparing the fuel compositions include hydroisomerizing a normal alkane starting material to form an isomerized mixture and subsequently removing remnant normal alkanes from the isomerized mixture by solvent dewaxing and/or distillation. Some of the fuel compositions may have freezing points at or below ?47° C., making them amenable for use a surrogate fuels in the place of JP-8.
    Type: Application
    Filed: July 30, 2012
    Publication date: May 2, 2013
    Applicant: University of Dayton
    Inventors: Heinz J. Robota, Jhoanna C. Alger
  • Patent number: 8395521
    Abstract: Smart aerospace structures are described herein utilizing a deactivated RFID tag including an IC and an electrical by-pass. The electrical by-pass is conductive and the electrical by-pass is in parallel with the IC such that the deactivated RFID becomes activated upon an abnormal condition, such as an improper clamp installation, a clamp failure, an impact, a thermal event or a crack.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: March 12, 2013
    Assignee: University of Dayton
    Inventors: Robert E. Kauffman, J. Douglas Wolf
  • Publication number: 20120315467
    Abstract: A method of growing carbon nanomaterials on a substrate wherein the substrate is exposed to an oxidizing gas; a seed material is deposited on the substrate to form a receptor for a catalyst on the surface of said substrate; a catalyst is deposited on the seed material by exposing the receptor on the surface of the substrate to a vapor of the catalyst; and substrate is subjected to chemical vapor deposition in a carbon containing gas to grow carbon nanomaterial on the substrate.
    Type: Application
    Filed: June 12, 2012
    Publication date: December 13, 2012
    Applicant: UNIVERSITY OF DAYTON
    Inventors: Khalid Lafdi, Lingchuan Li, Matthew C. Boehle, Alexandre Lagounov
  • Patent number: 8248599
    Abstract: Special polarization states are generated that have unique focusing properties that may be used to create extremely strong longitudinal fields. Combined with surface plasmon excitation, these polarization states can be used in apertureless near-field scanning optical microscopy systems. A radially polarized beam is directed into a plasmon-generating optical fiber comprising a metal coated, tapered, apertureless tip. The apertureless tip excites surface plasmon waves and direct the surface plasmon waves to the tip when a radially polarized beam propagates along the plasmon-generating optical fiber. An objective lens collects the near field optical signals from a sample positioned adjacent to the apertureless. Potential spatial resolution of the apertureless NSOM could reach beyond 10 nm. Such strong field enhancement allows the development of a reliable nano-Raman system that can measure mechanical as well as chemical compositions of samples with resolution beyond 10 nm.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: August 21, 2012
    Assignee: University of Dayton
    Inventor: Qiwen Zhan
  • Publication number: 20120206792
    Abstract: Tunable light sources having a single optical parametric generation (OPG) source that results in an amplified, narrow bandwidth seed beam and methods of tuning therewith are disclosed. The tunable light source may include a polarization rotator to rotate a pump beam before a first pass through an OPG, and a linear-to-circular polarization device to polarize the pump beam directed back toward the OPG for a second pass therethrough. Alternately, the tunable light source may include an OPG source through which a pump beam passes only in the first direction, a separator that separates a signal beam from the pump beam exiting from the OPG, a narrowband wavelength filter that receives the signal beam and generate a seed beam, and a reflecting surface that directs the seed beam back through the OPG (opposite the first direction) to seed the back part of the pulse of the pulse laser.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 16, 2012
    Applicant: UNIVERSITY OF DAYTON
    Inventor: Peter Powers
  • Patent number: 8221937
    Abstract: Metal-free fuel cell cathodes having a catalytic layer of vertically-aligned, nitrogen-doped carbon nanotubes (VA-NCNTs) are provided. The fuel cell cathodes comprise a cathode body, a binder layer attached to an outer surface of the cathode body, and the catalytic layer, which is supported by the binder layer. The binder layer may comprise a composite of a conductive polymer and doped or undoped nonaligned carbon nanotubes. In a method for forming the fuel cell cathodes, the VA-NCNTs may be formed by pyrolysis of a metalorganic compound and integration of the nanotubes with nitrogen. The binder layer is applied, and the resulting supported nanotube array may be attached to the cathode body. Fuel cells comprising the fuel cell cathodes are provided. The fuel cell cathodes comprising VA-NCNTs demonstrate superior oxygen-reduction reaction performance, including for electrocatalytic activity, operational stability, tolerance to crossover effects, and resistance to CO poisoning.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: July 17, 2012
    Assignee: University of Dayton
    Inventor: Liming Dai
  • Patent number: 8199834
    Abstract: System and method of providing improved signal compression using frame decimation through frame simplification and generating an encoded bitstream of video frames therefrom are disclosed. The encoding method comprises zeroing a difference frame generated by an encoder by using a feedback loop that injects a reconstructed frame, generated by the encoder of the difference frame, as a next frame of the video frames to be processed by the encoder. The encoding system comprises an input configured to provide a stream of video frames; a first process configured to generate a difference frame, and a second process configured to generate a reconstructed frame. A feedback loop of the system is configured to inject a generated reconstructed frame from the second process of a generated difference frame from the first process as a next frame of the video frames in the stream to be processed into the encoded bitstream by the encoding system.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: June 12, 2012
    Assignee: University of Dayton
    Inventors: Frank Scarpino, Eric Balster, Thaddeus Marrara
  • Patent number: 8183164
    Abstract: A method and system for the preferential growth of semiconducting vertically-aligned single-walled carbon nanotubes (VA-SWNTs) is provided. The method combines the use of plasma-enhanced chemical vapor deposition at low pressure with rapid heating. The method provides a high yield of up to approximately 96% semiconducting SWNTs in the VA-SWNT array. The as-synthesized semiconducting SWNTs can be used directly for fabricating field effect transistor (FET) devices without the need for any post-synthesis purification or separation.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: May 22, 2012
    Assignee: University of Dayton
    Inventors: Liangti Qu, Liming Dai
  • Patent number: 8170335
    Abstract: A system for processing an image includes a non-transitory memory component storing a set of executable instructions, and a scalable tile processing device. The executable instructions cause the system to receive image data, partition the image data into tiles, transmit a tile to the scalable tile processing device, receive an encoded bit stream corresponding to the transmitted tile from the tile processing device, output compressed image data including the encoded bit stream, receive the compressed image data, decode the compressed image data to generate a plurality of decoded code blocks, and output decompressed image data including the plurality of decoded code blocks. The scalable tile processing device receives the tile including tile image data, wavelet transforms, quantizes, segments, and encodes the tile image data to generate a plurality of encoded code blocks, and transmits an encoded bit stream including the plurality of encoded code blocks to the system.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: May 1, 2012
    Assignee: University of Dayton
    Inventors: Eric Balster, Mike Flaherty, Benjamin Fortener, David Lucking, Thaddeus Marrara, David Mundy, Frank Scarpino, Ken Simone, William Turri, Nick Vicen, David Walker
  • Patent number: 8170333
    Abstract: A system for processing an image includes a an image data input port, a compressed image data output port or a compressed image data storage node, a non-transitory memory component storing a set of executable instructions, and a scalable tile processing device. The executable instructions cause the system to receive image data, partition the image data into tiles, transmit a tile to the scalable tile processing device, receive an encoded bit stream corresponding to the transmitted tile from the tile processing device, and output compressed image data including the encoded bit stream. The scalable tile processing device receives the tile including tile image data, wavelet transforms, quantizes, segments, and encodes the tile image data to generate a plurality of encoded code blocks, and transmits an encoded bit stream including the plurality of encoded code blocks to the system.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: May 1, 2012
    Assignee: University of Dayton
    Inventors: Eric Balster, Mike Flaherty, Benjamin Fortener, David Lucking, Thaddeus Marrara, David Mundy, Frank Scarpino, Ken Simone, William Turri, Nick Vicen, David Walker
  • Patent number: 8170334
    Abstract: A system for processing an image includes a non-transitory memory component storing a set of executable instructions, and a scalable tile processing device. The executable instructions cause the system to receive image data, partition the image data into tiles, transmit a tile to the scalable tile processing device, receive an encoded bit stream corresponding to the transmitted tile from the tile processing device, output compressed image data including the encoded bit stream, receive the compressed image data, decode the compressed image data to generate a plurality of decoded code blocks, and output decompressed image data including the plurality of decoded code blocks. The scalable tile processing device receives the tile including tile image data, wavelet transforms, quantizes, segments, and encodes the tile image data to generate a plurality of encoded code blocks, and transmits an encoded bit stream including the plurality of encoded code blocks to the system.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: May 1, 2012
    Assignee: University of Dayton
    Inventors: Eric Balster, Mike Flaherty, Benjamin Fortener, David Lucking, Thaddeus Marrara, David Mundy, Frank Scarpino, Ken Simone, William Turri, Nick Vicen, David Walker