Chemical and Biomolecular Engineering

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  • Inventor(s):
    Mark Muldoon, Joan F. Brennecke, Edward J. Maginn, Eric F. V. Scriven, Colin H. McAteer
    Patent Number:
    US 7687513 B2
    Description:

    Disclosed herein are aminopyridinium cations and compositions containing these cations. Piperidino pyridinium cations and compositions containing these cations are also described. Ionic compositions, particularly liquid ionic compositions that contain the aminopyridinium cation or piperidino pyridinium cation are also described. Methods of enhancing the thermal stability of a compound, particularly an ionic compound, using the aminopyridinium or piperidino pyridinium cations, are also present…

    Date Issued:
    2010-03-30
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest, Roger L. Klinedinst, Alexander Mukasyan
    Patent Number:
    US 7922845 B2
    Description:

    An apparatus for bonding a first carbon composite to a second carbon composite through a reactant layer includes a housing, and a pair of conductive press plates electrically isolated from the housing. The press plates are adapted to position the two parts to be bonded with a reactant layer therebetween. The press plates are subjected to an electrical potential and a clamping force, sufficient to initiate a combustion reaction that creates a molten ceramic to bond together the carbon-carbon c…

    Date Issued:
    2011-04-12
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Eduardo E. Wolf
    Patent Number:
    US 7659227 B2
    Description:

    Embodiments of the present invention provide catalysts for production of hydrogen from methanol. In an embodiment, a Cu/Zn catalyst may be promoted by Zr and/or Ce, in addition to, in embodiments, Pd or another noble metal. In an embodiment, a chemical composition may have a Cu/Zn base catalyst with a promoter element of Ce, Zr, and/or Pd or another noble metal. Methods of producing hydrogen using such catalysts are also provided.

    Date Issued:
    2010-02-09
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Hsueh-Chia Chang, David T. Leighton
    Patent Number:
    US 6428754 B2
    Description:

    An exhaust gas treatment system and method for treating the exhaust gas of an internal combustion engine includes a catalytic converter and a catalytic preheater or igniter upstream of the catalytic converter. A bypass passage extends around the igniter such that during the ignition period about two-thirds of the exhaust gas is bypassed around the igniter and one-third passes through the igniter. The igniter raises the temperature of the exhaust gases passing therethrough to an adiabatic temp…

    Date Issued:
    2002-08-06
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Eduardo E. Wolf, Paul McAllister
    Patent Number:
    US 5312679 B2
    Description:

    A catalytic carbon formation technique in a carbon fiber substrate is disclosed. The carbon fiber substrate is first impregnated with a catalyst and is thereafter heated in an atmosphere rich in carbon and hydrogen. The catalyst is typically a Group VIII metal and may be selected from the group consisting of iron, nickel and cobalt. An incipient wetness technique for impregnating the substrate is also disclosed. A salt of the catalyst is provided in solution and void volume of the substrate i…

    Date Issued:
    1994-05-17
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Manuel Koucouthakis, Douglas J. Steinke, Alexander Mukasyan, Jeremiah D. E. White
    Patent Number:
    US 9321692 B2
    Description:

    Production of pore-free carbon/carbon-silicon carbide composite materials with mechanical properties making them suitable for use in such applications as the production of aircraft landing system brake components including brake discs. The method includes: providing a porous carbon-carbon composite preform; surrounding the porous carbon-carbon composite preform with silicon powder to form an intermediate construct; applying a uniaxial load to the construct; applying direct electrical current …

    Date Issued:
    2016-04-26
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Michael M. Crouse, Albert E. Miller, Juan Jiang, David T. Crouse, Subash C. Basu
    Patent Number:
    US 6869671 B2
    Description:

    A thin film based nanoporous alumina template has been developed which allows the in situ removal of an electrically insulating alumina barrier layer at the pore bases. This barrier free nanoporous system has great utility for electrodeposition of a wide variety of nanowire materials. An exemplary multilayer thin film precursor is provided comprising Al (anodization layer), Ti (diffusion barrier) and Pt (active electrode) on a Si substrate. Aluminum anodization in sulfuric acid with a subsequ…

    Date Issued:
    2005-03-22
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Arvind Varma, Alexander Mukasyan, Bing-Yun Li
    Patent Number:
    US 6896846 B2
    Description:

    A method for synthesis of biomedical alloys has been developed based on combustion phenomena. This low pressure combustion synthesis (LPCS) technique may be used for production of Co-based and other metal-based alloys, which cover the entire range of orthopaedic implants, including total hip and knee replacements, as well as hone screws, plates, and wires. A unique aspect of the method is that combustion synthesis under low ambient gas pressure allows one to produce pore-free (>99% theoret…

    Date Issued:
    2005-05-24
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Agnes E. Ostafin, Robert Nooney, Edward J. Maginn
    Patent Number:
    US 6913825 B2
    Description:

    Nanoparticles, nanocomposites, and methods for making the nanoparticles and nanocomposites are disclosed. Illustrated methods include preparing a nanocomposite particle by binding a silicate compound to the surface of a core particle in an aqueous suspension, adding a silicate source and an organic surfactant template, and stirring the aqueous suspension to obtain silicate growth. The resultant nanoparticles and nanocomposites have desired mesoporous silicate structure

    Date Issued:
    2005-07-05
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Hsueh-Chia Chang, Jason Gordon, Satyajyoti Senapati, Zachary Gagnon, Sagnik Basuray
    Patent Number:
    US 8771938 B2
    Description:

    Disclosed are example methods and devices for detecting one or more targets. An example method includes placing a sample including a first target with in a microfluidic device and hybridizing a plurality of copies of the first target with a plurality of nanostructures. The example method includes applying an electric current to the plurality of nanostructures and using an electric field created by the electric current to move the plurality of nanostructures. In addition, the plurality of nano…

    Date Issued:
    2014-07-08
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Nishant Chetwani, Catherine Cassou, David Go, Hsueh-Chia Chang
    Patent Number:
    US 8716675 B2
    Description:

    An alternating current electrospray mass spectrometry device includes an electrospray device having at least one emitter providing a passageway for transmission of an analyte sample. At least one conductive element is in electrical communication with the at least one emitter. A power source generates an alternating current electric field to form a liquid cone at a tip of the emitter and ionizes the analyte sample present in the liquid cone. The frequency of the electric field entrains low mob…

    Date Issued:
    2014-05-06
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Alexander Mukasyan, Khachatur Manukyan
    Patent Number:
    US 9580323 B2
    Description:

    The invention provides methods for the combustion synthesis (CS) of graphene by a novel exothermic self-sustained reaction between a refractory ceramic compound and a carbon-containing polymer under an inert gas atmosphere. The synthesis of graphene was confirmed by both transmission electron microscopy and Raman spectroscopy. The graphene produced has very low (<1 wt. %) oxygen content. Fluorocarbon gases released due to decomposition of the carbon-containing polymer in the combustion wav…

    Date Issued:
    2017-02-28
    Record Visibility:
    Public
    Resource Type
    Patent