Patents Represented by Attorney, Agent or Law Firm Joy Alwan
-
Patent number: 6681938Abstract: A process for separating organic and inorganic particles from a dry mixture by sizing the particles into isolated fractions, contacting the sized particles to a charged substrate and subjecting the charged particles to an electric field to separate the particles.Type: GrantFiled: June 12, 2001Date of Patent: January 27, 2004Assignee: The United States of America as represented by the United States Department of EnergyInventors: Thomas A. Link, Micael R. Schoffstall, Yee Soong
-
Patent number: 6670608Abstract: The present invention relates generally to a gas sampling system, and specifically to a gas sampling system for transporting a hazardous process gas to a remotely located mass spectrometer. The gas sampling system includes a capillary tube having a predetermined capillary length and capillary diameter in communication with the supply of process gas and the mass spectrometer, a flexible tube surrounding and coaxial with the capillary tube intermediate the supply of process gas and the mass spectrometer, a heat transfer tube surrounding and coaxial with the capillary tube, and a heating device in communication the heat transfer tube for substantially preventing condensation of the process gas within the capillary tube.Type: GrantFiled: September 13, 2001Date of Patent: December 30, 2003Assignee: The United States of America as represented by the United States Department of EnergyInventors: Charles E. Taylor, Edward P. Ladner
-
Patent number: 6583310Abstract: A non-catalytic process for producing esters, the process comprising reacting an ammonium salt of a carboxylic acid with an alcohol and removing ammonia from the reaction mixture. Selectivities for the desired ester product can exceed 95 percent.Type: GrantFiled: February 22, 2002Date of Patent: June 24, 2003Assignee: The United States of America as represented by the United States Department of EnergyInventor: Yuval Halpern
-
Patent number: 6569226Abstract: A membrane for separating hydrogen from fluids is provided comprising a sintered homogenous mixture of a ceramic composition and a metal. The metal may be palladium, niobium, tantalum, vanadium, or zirconium or a binary mixture of palladium with another metal such as niobium, silver, tantalum, vanadium, or zirconium.Type: GrantFiled: September 28, 2001Date of Patent: May 27, 2003Assignee: The United States of America as represented by the United States Department of EnergyInventors: Stephen E. Dorris, Tae H. Lee, Uthamalingam Balachandran
-
Patent number: 6547854Abstract: A new method for making low-cost CO2 sorbents that can be used in large-scale gas-solid processes. The new method entails treating a solid substrate with acid or base and simultaneous or subsequent treatment with a substituted amine salt. The method eliminates the need for organic solvents and polymeric materials for the preparation of CO2 capture systems.Type: GrantFiled: September 25, 2001Date of Patent: April 15, 2003Assignee: The United States of America as represented by the United States Department of EnergyInventors: McMahan L. Gray, Yee Soong, Kenneth J. Champagne
-
Patent number: 6403755Abstract: A new phosphazene-based polyester macro-molecule is provided, as is a method for producing the macro-molecule.Type: GrantFiled: March 7, 2001Date of Patent: June 11, 2002Assignee: The United States of America as represented by the Department of EnergyInventors: Frederick F. Stewart, Thomas A. Luther, Mason K. Harrup
-
Patent number: 6316131Abstract: The heavily-doped silver chalcogenides, Ag2+&dgr;Se and Ag2+&dgr;Te, show magnetoresistance effects on a scale comparable to the “colossal” magnetoresistance (CMR) compounds. Hall coefficient, magnetoconductivity, and hydrostatic pressure experiments establish that elements of narrow-gap semiconductor physics apply, but both the size of the effects at room temperature and the linear field dependence down to fields of a few Oersteds are surprising new features.Type: GrantFiled: September 10, 1998Date of Patent: November 13, 2001Assignee: The United States of America as represented by the United States Department of EnergyInventors: Marie-Louis Saboungi, David C. L. Price, Thomas F. Rosenbaum, Rong Xu, Anke Husmann
-
Patent number: 6309612Abstract: The invention is a ceramic membrane reactor for syngas production having a reaction chamber, an inlet in the reactor for natural gas intake, a plurality of oxygen permeating ceramic slabs inside the reaction chamber with each slab having a plurality of passages paralleling the gas flow for transporting air through the reaction chamber, a manifold affixed to one end of the reaction chamber for intake of air connected to the slabs, a second manifold affixed to the reactor for removing the oxygen depleted air, and an outlet in the reaction chamber for removing syngas.Type: GrantFiled: November 18, 1998Date of Patent: October 30, 2001Assignee: The United States of America as represented by the United States Department of EnergyInventors: Uthamalingam Balachandran, Rodney L. Mieville
-
Patent number: 6259763Abstract: Spherically or toroidally curved, double focusing crystals are used in a spectrometer for X-ray diagnostics of an extended X-ray source such as a hot plasma produced in a tokomak fusion experiment to provide spatially and temporally resolved data on plasma parameters using the imaging properties for Bragg angles near 45. For a Bragg angle of 45°, the spherical crystal focuses a bundle of near parallel X-rays (the cross section of which is determined by the cross section of the crystal) from the plasma to a point on a detector, with parallel rays inclined to the main plain of diffraction focused to different points on the detector. Thus, it is possible to radially image the plasma X-ray emission in different wavelengths simultaneously with a single crystal.Type: GrantFiled: May 21, 1999Date of Patent: July 10, 2001Assignee: The United States of America as represented by the United States Department of EnergyInventors: Manfred L. Bitter, Ben Fraenkel, James L. Gorman, Kenneth W. Hill, A. Lane Roquemore, Wolfgang Stodiek, Schweickhard E. von Goeler
-
Patent number: 6251179Abstract: A thermally conductive cement-sand grout for use with a geothermal heat pump system. The cement sand grout contains cement, silica sand, a superplasticizer, water and optionally bentonite. The present invention also includes a method of filling boreholes used for geothermal heat pump systems with the thermally conductive cement-sand grout. The cement-sand grout has improved thermal conductivity over neat cement and bentonite grouts, which allows shallower bore holes to be used to provide an equivalent heat transfer capacity. In addition, the cement-sand grouts of the present invention also provide improved bond strengths and decreased permeabilities. The cement-sand grouts can also contain blast furnace slag, fly ash, a thermoplastic air entraining agent, latex, a shrinkage reducing admixture, calcium oxide and combinations thereof.Type: GrantFiled: March 23, 1999Date of Patent: June 26, 2001Assignee: The United States of America as represented by the Department of EnergyInventor: Marita Allan
-
Patent number: 6204428Abstract: Electrochemical incineration of p-benzoquinone was evaluated as a model for the mineralization of carbon in toxic aromatic compounds. A Ti or Pt anode was coated with a film of the oxides of Ti, Ru, Sn and Sb. This quaternary metal oxide film was stable; elemental analysis of the electrolyzed solution indicated the concentration of these metal ions to be 3 &mgr;g/L or less. The anode showed good reactivity for the electrochemical incineration of benzoquinone. The use of a dissolved salt matrix as the so-called “supporting electrolyte” was eliminated in favor of a solid-state electrolyte sandwiched between the anode and cathode.Type: GrantFiled: December 8, 1998Date of Patent: March 20, 2001Assignee: The United States of America as represented by the United States Department of EnergyInventors: Dennis C. Johnson, Linda L. Houk, Jianren Feng
-
Patent number: 6143538Abstract: A bacterial gene which encodes an enzyme that is an acyl-CoA reductase. The acyl-CoA reductase is able to chemically reduce acyl-CoAs to their corresponding alcohols, via aldehyde intermediates.Type: GrantFiled: February 19, 1998Date of Patent: November 7, 2000Assignee: The United States of America as represented by the United States Department of EnergyInventors: Chris R. Somerville, Steven E. Reiser
-
Patent number: 6102687Abstract: The invention relates to clean burning of fuel oil with air. More specifically, to a fuel burning combustion head using a low-pressure, high air flow atomizing nozzle so that there will be a complete combustion oil resulting in a minimum emission of pollutants. The inventors have devised a fuel burner that uses a low pressure air atomizing nozzle. The improved fuel burner does not result in the use of additional compressors or the introduction of pressurized gases downstream, nor does it require a complex design.Type: GrantFiled: September 28, 1998Date of Patent: August 15, 2000Assignee: U.S. Department of EnergyInventors: Thomas A. Butcher, Yusuf Celebi, Leonard Fisher
-
Patent number: 6063636Abstract: A method is provided for detecting pathological macromolecules in a patient, comprising obtaining body fluid from the patient, pretreating the body fluid, subjecting the pretreated body fluid to size-exclusion chromatography to create an excluded fluid, and analyzing the excluded fluid to detect macromolecules having a predetermined molecular weight. The method also allows for comparing elution spectra with reference spectra of suspect pathologic proteins.Type: GrantFiled: January 19, 1996Date of Patent: May 16, 2000Assignees: The United States of America as represented by the United States Department of Energy, The University of TennesseeInventors: Fred J. Stevens, Elizabeth A. Myatt, Alan Solomon
-
Patent number: 6021681Abstract: The apparatus is a sampling device having a pad for sample collection, a body which supports the pad, a detachable handle connected to the body and a cap which encloses and retains the pad and body to protect the integrity of the sample.Type: GrantFiled: June 27, 1997Date of Patent: February 8, 2000Assignee: The United States of America as represented by the United States Department of EnergyInventor: Gerd-Rainer Jezek
-
Patent number: 5962630Abstract: A method of encapsulating mixed waste in which a thermoplastic polymer having a melting temperature less than about 150.degree. C. and sulfur and mixed waste are mixed at an elevated temperature not greater than about 200.degree. C. and mixed for a time sufficient to intimately mix the constituents, and then cooled to a solid. The resulting solid is also disclosed.Type: GrantFiled: December 3, 1997Date of Patent: October 5, 1999Assignee: The United States of America as represented by the United States Department of EnergyInventors: Michael H. O'Brien, Arnold W. Erickson
-
Patent number: 5952655Abstract: A method and apparatus are provided to concentrate and detect very low levels of radioactive noble gases from the atmosphere. More specifically the invention provides a method and apparatus to concentrate xenon, krypton and radon in an organic fluid and to detect these gases by the radioactive emissions.Type: GrantFiled: August 1, 1997Date of Patent: September 14, 1999Assignees: The United States of America as represented by the United States Department of Energy, University of CincinnatiInventors: Kenneth C. Gross, John D. Valentine, Francis Markum, Mary Zawadzki, Charles Dickerman
-
Patent number: 5942439Abstract: The present invention provides a method for preparing a VOC sample for carbon and chlorine isotope ratio analysis by mass spectrometer. A VOC sample is placed in a combustion tube and reacted with CuO to form CO.sub.2 and CuCl. The CO.sub.2 is then extracted and analyzed for the carbon isotope ratio. The CuCl is separated from the excess CuO and reacted with CH.sub.3 I to form CH.sub.3 Cl, extracted and analyzed for chlorine isotope ratio.Type: GrantFiled: August 28, 1997Date of Patent: August 24, 1999Assignee: The United States of America as represented by the United States Department of EnergyInventors: Ben D. Holt, Neil C. Sturchio
-
Patent number: 5900042Abstract: A method is provided to remove elemental mercury from a gas stream by reacting the gas stream with an oxidizing solution to convert the elemental mercury to soluble mercury compounds. Other constituents are also oxidized. The gas stream is then passed through a wet scrubber to remove the mercuric compounds and oxidized constituents.Type: GrantFiled: August 18, 1997Date of Patent: May 4, 1999Assignee: The United States of America as represented by the United States Department of EnergyInventors: Marshall H. Mendelsohn, Hann-Sheng Huang
-
Patent number: 5775648Abstract: Portable conduit retention apparatus for releasably retaining a conduit therein. The apparatus releasably retains the conduit out of the way of nearby personnel and equipment. The apparatus includes a portable support frame defining a slot therein having an open mouth portion in communication with the slot for receiving the conduit through the open mouth portion and into the slot. A retention bar is pivotally connected to the support frame adjacent the mouth portion for releasably retaining the conduit in the slot. The retention bar freely pivots to a first position, so that the mouth portion is unblocked in order that the conduit is received through the mouth portion and into the slot. In addition, the retention bar freely pivots to a second position, so that the mouth portion is blocked in order that the conduit is retained in the slot.Type: GrantFiled: August 26, 1996Date of Patent: July 7, 1998Assignee: The United States of America as represented by the United States Department of EnergyInventor: Richard H. Metzger