Patents by Inventor David W. DePaoli

David W. DePaoli has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130048500
    Abstract: A method of forming a carbon and titanium containing composite that includes mixing a titanium-containing powder with carbon and forming the mixture of the titanium-containing-powder and carbon into a composite structure at a temperature of less than 1500° C. The forming process provides a net shape having dimensions within 90% or greater than the final shape of the product. The binder of the composite is provided by the titanium, and the dispersed phase of the composite is provided by the carbon. The carbon and titanium containing composite may be employed as in applications including capacitive deionization (CDI), gas separation, chromatography, catalysis and electrode.
    Type: Application
    Filed: August 26, 2011
    Publication date: February 28, 2013
    Applicant: UT-BATTELLE, LLC
    Inventors: Craig A. Blue, Sheng Dai, David W. DePaoli, James O. Kiggans, JR., Richard T. Mayes, William H. Peter, Constantinos Tsouris
  • Patent number: 7914766
    Abstract: Applicant's invention is a radionuclide generator resin material for radiochemical separation of daughter radionuclides, particularly 213Bi, from a solution of parental radionuclides, the resin material capable of providing clinical quantities of 213Bi of at least 20-mCi, wherein the resin material comprises a silica-based structure having at least one bifunctional ligand covalently attached to the surface of the silica-based structure. The bifunctional ligand comprises a chemical group having desirable surface functionality to enable the covalent attachment of the bifunctional ligand thereon the surface of the structure and the bifunctional ligand further comprises a second chemical group capable of binding and holding the parental radionuclides on the resin material while allowing the daughter radionuclides to elute off the resin material. The bifunctional ligand has a carbon chain with a limited number of carbons to maintain radiation stability of the resin material.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: March 29, 2011
    Assignee: UT-Battelle LLC
    Inventors: David W. DePaoli, Michael Z. Hu, Saed Mirzadeh, John W. Clavier
  • Publication number: 20110065816
    Abstract: Applicant's invention is a radionuclide generator resin material for radiochemical separation of daughter radionuclides, particularly 213Bi, from a solution of parental radionuclides, the resin material capable of providing clinical quantities of 213Bi of at least 20-mCi, wherein the resin material comprises a silica-based structure having at least one bifunctional ligand covalently attached to the surface of the silica-based structure. The bifunctional ligand comprises a chemical group having desirable surface functionality to enable the covalent attachment of the bifunctional ligand thereon the surface of the structure and the bifunctional ligand further comprises a second chemical group capable of binding and holding the parental radionuclides on the resin material while allowing the daughter radionuclides to elute off the resin material. The bifunctional ligand has a carbon chain with a limited number of carbons to maintain radiation stability of the resin material.
    Type: Application
    Filed: June 3, 2004
    Publication date: March 17, 2011
    Inventors: David W. DePaoli, Michael Z. Hu, Saed Mirzadeh, John W. Clavier
  • Patent number: 7255781
    Abstract: The present invention comprises a method for producing microfibers and nanofibers and further fabricating derived solid monolithic materials having aligned uniform micro- or nanofibrils. A method for producing fibers ranging in diameter from micrometer-sized to nanometer-sized comprises the steps of producing an electric field and preparing a solid precipitative reaction media wherein the media comprises at least one chemical reactive precursor and a solvent having low electrical conductivity and wherein a solid precipitation reaction process for nucleation and growth of a solid phase occurs within the media. Then, subjecting the media to the electric field to induce in-situ growth of microfibers or nanofibers during the reaction process within the media causing precipitative growth of solid phase particles wherein the reaction conditions and reaction kinetics control the size, morphology and composition of the fibers.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: August 14, 2007
    Assignee: UT-Battelle, LLC
    Inventors: Michael Z. Hu, David W. DePaoli, Tanya Kuritz, Ogbemi Omatete
  • Publication number: 20040217010
    Abstract: The present invention comprises a method for producing microfibers and nanofibers and further fabricating derived solid monolithic materials having aligned uniform micro- or nanofibrils. A method for producing fibers ranging in diameter from micrometer-sized to nanometer-sized comprises the steps of producing an electric field and preparing a solid precipitative reaction media wherein the media comprises at least one chemical reactive precursor and a solvent having low electrical conductivity and wherein a solid precipitation reaction process for nucleation and growth of a solid phase occurs within the media. Then, subjecting the media to the electric field to induce in-situ growth of microfibers or nanofibers during the reaction process within the media causing precipitative growth of solid phase particles wherein the reaction conditions and reaction kinetics control the size, morphology and composition of the fibers.
    Type: Application
    Filed: September 29, 2003
    Publication date: November 4, 2004
    Inventors: Michael Z. Hu, David W. DePaoli, Tanya Kuritz, Ogbemi Omatete
  • Publication number: 20030086333
    Abstract: A device for electrohydrodynamically (EHD) mixing fluids includes a mixing channel, the mixing channel having at least one supply channel fluidicly connected thereto for transport of fluid into the mixing channel. At least two electrodes are provided, at least one of the electrodes for charging at least a portion of the fluid in the mixing channel. The electrodes impose an electric field in the mixing channel to induce EHD mixing of the fluid in the mixing channel. A method for EHD mixing of fluids applies an electric field to a mixing channel to induce EHD mixing.
    Type: Application
    Filed: November 5, 2001
    Publication date: May 8, 2003
    Inventors: Constantinos Tsouris, David W. DePaoli, Christopher T. Culbertson, Stephen C. Jacobson, J. Michael Ramsey
  • Publication number: 20010050881
    Abstract: The present invention relates to methods and apparatus that employ electrohydrodynamic flows in miscible, partially miscible and immiscible multiphase systems to induce mixing for dissolution and/or reaction processes.
    Type: Application
    Filed: September 20, 1999
    Publication date: December 13, 2001
    Inventors: DAVID W. DEPAOLI, CONSTANTINOS TSOURIS
  • Patent number: 6265025
    Abstract: The present invention relates to a method for the rapid production of homogeneous, ultrafine inorganic material via liquid-phase reactions. The method of the present invention employs electrohydrodynamic flows in the vicinity of an electrified injector tube placed inside another tube to induce efficient turbulent mixing of two fluids containing reactive species. The rapid micromixing allows liquid-phase reactions to be conducted uniformly at high rates. This approach allows continuous production of non-agglomerated, monopispersed, submicron-sized, sphere-like powders.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: July 24, 2001
    Assignee: Lockheed Martin Energy Research Corporation
    Inventors: David W. DePaoli, Zhong Cheng Hu, Constantinos Tsouris
  • Patent number: 6179987
    Abstract: A method and apparatus to electrolytically produce high-purity magnetite particles is provided. The apparatus comprises a container for holding an electrolytic solution. In accordance with one embodiment, the electrolytic solution includes sodium chloride and deionized water. A pair of carbon steel electrodes are submerged within the electrolytic solution. A d.c. power supply is also provided to apply a voltage to the electrodes for a period of time sufficient to produce the magnetite particles.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: January 30, 2001
    Assignee: UT Battelle, LLC
    Inventors: Constantinos Tsouris, David W. DePaoli, Joel T. Shor
  • Patent number: 5762775
    Abstract: A method for use in electrically forming dispersions of a nonconducting fluid in a conductive medium that minimizes power consumption, gas generation, and sparking between the electrode of the nozzle and the conductive medium. The method utilizes a nozzle having a passageway, the wall of which serves as the nozzle electrode, for the transport of the nonconducting fluid into the conductive medium. A second passageway provides for the transport of a flowing low conductivity buffer fluid which results in a region of the low conductivity buffer fluid immediately adjacent the outlet from the first passageway to create the necessary protection from high current drain and sparking. An electrical potential difference applied between the nozzle electrode and an electrode in contact with the conductive medium causes formation of small droplets or bubbles of the nonconducting fluid within the conductive medium.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: June 9, 1998
    Assignee: Lockheed Martin Energy Systems, Inc.
    Inventors: David W. DePaoli, Constantinos Tsouris, James Q. Feng