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Nanomanipulation Coupled Nanospray Mass Spectrometry (NMS)
Patent relating to nanomanipulation coupled nanospray mass spectrometry (NMS).
Date:
March 12, 2013
Creator:
Verbeck, Guido F.
System:
The UNT Digital Library
Methods and Devices for Enrollment and Verification of Biometric Information in Identification Documents
Patent relating to methods and devices for enrollment and verification of biometric information in identification documents.
Date:
April 24, 2008
Creator:
Mohanty, Saraju P.
System:
The UNT Digital Library
Coal Beneficiation by Gas Agglomeration
Coal beneficiation is achieved by suspending coal fines in a colloidal suspension of microscopic gas bubbles in water under atmospheric conditions to form small agglomerates of the fines adhered by the gas bubbles. The agglomerates are separated, recovered and resuspended in water. Thereafter, the pressure on the suspension is increased above atmospheric to deagglomerate, since the gas bubbles are then re-dissolved in the water. During the deagglomeration step, the mineral matter is dispersed, and when the pressure is released, the coal portion of the deagglomerated gas-saturated water mixture reagglomerates, with the small bubbles now coming out of the solution. The reagglomerate can then be separated to provide purified coal fines without the mineral matter.
Date:
March 15, 2000
Creator:
Wheelock, Thomas D. & Shen, Meiyu
System:
The UNT Digital Library
Bi-Stable Optical Actuator
The present invention is a bi-stable optical actuator device that is depowered in both stable positions. A bearing is used to transfer motion and smoothly transition from one state to another. The optical actuator device may be maintained in a stable position either by gravity or a restraining device.
Date:
October 15, 1999
Creator:
Holdener, Fred R. & Boyd, Robert D.
System:
The UNT Digital Library
Pressure Gradient Passivation of Carbonaceous Material Normally Susceptible to Spontaneous Combustion
This invention is a process for the passivation or deactivation with respect to oxygen of a carbonaceous material by the exposure of the carbonaceous material to an oxygenated gas in which the oxygenated gas pressure is increased from a first pressure to a second pressure and then the pressure is changed to a third pressure. Preferably a cyclic process which comprises exposing the carbonaceous material to the gas at low pressure and increasing the pressure to a second higher pressure and then returning the pressure to a lower pressure is used. The cycle is repeated at least twice wherein the higher pressure may be increased after a selected number of cycles.
Date:
July 15, 1999
Creator:
Ochs, Thomas L.; Sands, William D.; Schroeder, Karl; Summers, Cathy A. & Utz, Bruce R.
System:
The UNT Digital Library
Catalysts for Conversion of Methane to Higher Hydrocarbons
Catalysts for converting methane to higher hydrocarbons such as ethane and ethylene in the presence of oxygen at temperatures in the range of about 700 to 900{degrees}C are described. These catalysts comprise calcium oxide or gadolinium oxide respectively promoted with about 0.025--0.4 mole and about 0.1--0.7 mole sodium pyrophosphate. A preferred reaction temperature in a range of about 800 to 850{degrees}C with a preferred oxygen-to-methane ratio of about 2:1 provides an essentially constant C{sub 2} hydrocarbon yield in the range of about 12 to 19 percent over a period of time greater than about 20 hours.
Date:
May 15, 1991
Creator:
Siriwardane, Ranjani V.
System:
The UNT Digital Library
Cavity resonance absorption in ultra-high bandwidth CRT deflection structure
An improved ultra-high bandwidth helical coil deflection structure for a cathode ray tube is described comprising a first metal member having a bore therein, the metal walls of which form a first ground plane; a second metal member coaxially mounted in the bore of the first metal member and forming a second ground plane; a helical deflection coil coaxially mounted within the bore between the two ground planes; and a resistive load disposed in one end of the bore and electrically connected to the first and second ground planes, the resistive load having an impedance substantially equal to the characteristic impedance of the coaxial line formed by the two coaxial ground planes to inhibit cavity resonance in the structure within the ultra-high bandwidth of operation. Preferably, the resistive load comprises a carbon film on a surface of an end plug in one end of the bore.
Date:
May 15, 1991
Creator:
Dunham, M. E. & Hudson, C. L.
System:
The UNT Digital Library
Microwave sintering of nanophase ceramics without concomitant grain growth
A method of sintering nanocrystalline material is disclosed wherein the nanocrystalline material is microwaved to heat the material to a temperature less than about 70% of the melting point of the nanocrystalline material expressed in degrees K. This method produces sintered nanocrystalline material having a density greater than about 95% of theoretical and an average grain size not more than about 3 times the average grain size of the nanocrystalline material before sintering. Rutile TiO[sub 2] as well as various other ceramics have been prepared. Grain growth of as little as 1.67 times has resulted with densities of about 90% of theoretical.
Date:
April 15, 1991
Creator:
Eastman, J.A.; Sickafus, K.E. & Katz, J.D.
System:
The UNT Digital Library
Microwave Sintering of Nanophase Ceramics Without Concomitant Grain Growth
A method of sintering nanocrystalline material is disclosed wherein the nanocrystalline material is microwaved to heat the material to a temperature less than about 70% of the melting point of the nanocrystalline material expressed in degrees K. This method produces sintered nanocrystalline material having a density greater than about 95% of theoretical and an average grain size not more than about 3 times the average grain size of the nanocrystalline material before sintering. Rutile TiO{sub 2} as well as various other ceramics have been prepared. Grain growth of as little as 1.67 times has resulted with densities of about 90% of theoretical.
Date:
April 15, 1991
Creator:
Eastman, Jeffrey A.; Sickafus, Kurt E. & Katz, Joel D.
System:
The UNT Digital Library
Apparatus and method for critical current measurements
An apparatus for the measurement of the critical current of a superconductive sample, e.g., a clad superconductive sample, the apparatus including a conductive coil, a means for maintaining the coil in proximity to a superconductive sample, an electrical connection means for passing a low amplitude alternating current through the coil, a cooling means for maintaining the superconductive sample at a preselected temperature, a means for passing a current through the superconductive sample, and, a means for monitoring reactance of the coil. The alternating current capable of generating a magnetic field sufficient to penetrate, e.g., any cladding, and to induce eddy currents in the superconductive material, passing a steadily increasing current through the superconductive material, the current characterized as having a different frequency than the alternating current, and, monitoring the reactance of the coil with a phase sensitive detector as the current passed through the superconductive material is steadily increased whereby critical current of the superconductive material can be observed as the point whereat a component of impedance deviates.
Date:
March 15, 1991
Creator:
Martin, J. A. & Dye, R. C.
System:
The UNT Digital Library
Reflection mass spectrometry technique for monitoring and controlling composition during molecular beam epitaxy
This invention is comprised of a method for on-line accurate monitoring and precise control of molecular beam epitaxial growth of Groups III-III-V or Groups III-V-V layers in an advanced semiconductor device incorporates reflection mass spectrometry. The reflection mass spectrometry is responsive to intentional perturbations in molecular fluxes incident on a substrate by accurately measuring the molecular fluxes reflected from the substrate. The reflected flux is extremely sensitive to the state of the growing surface and the measurements obtained enable control of newly forming surfaces that are dynamically changing as a result of growth.
Date:
August 15, 1990
Creator:
Brennan, T. M.; Hammons, B. E. & Tsao, J. Y.
System:
The UNT Digital Library
Multiple-reflection optical gas cell. [DOE Patent Application]
A multiple-reflection optical cell for Raman or fluorescence gas analysis consists of two spherical mirrors positioned transverse to a multiple-pass laser cell in a confronting plane-parallel alignment. The two mirrors are of equal diameter but possess different radii of curvature. The spacing between the mirrors is uniform and less than half of the radius of curvature of either mirror. The mirror of greater curvature possesses a small circular portal in its center which is the effective point source for conventional Fl double lens collection optics of a monochromator-detection system. Gas to be analyzed is flowed into the cell and irradiated by a multiply-reflected composite laser beam centered between the mirrors of the cell. Raman or fluorescence radiation originating from a large volume within the cell is: (1) collected via multiple reflections with the cell mirrors; (2) partially collimated; and (3) directed through the cell portal in a geometric array compatible with Fl collection optics.
Date:
June 15, 1981
Creator:
Matthews, T.G.
System:
The UNT Digital Library
Aeroplane.
Patent for aeroplane construction to include improvements to air motor protection to minimize resistance and the use of air cups to direct the full force of air to the motor shaft, including illustrations.
Date:
November 15, 1921
Creator:
Smith, Joseph A.
System:
The Portal to Texas History
Automobile-Signal.
Patent for turn signal improvements with an aim to improve visibility of signal and ease of replacement with the goal of communicating vehicular movement and reducing accidents.
Date:
November 15, 1921
Creator:
Squier, William Ernest
System:
The Portal to Texas History
Axle Lubricator.
Patent for axle lubricator. This invention makes it so that manual lubrication of spindles is eliminated.
Date:
November 15, 1921
Creator:
Bass, Thomas G.
System:
The Portal to Texas History
Coin-Wrapping Device.
Patent for a coin wrapper (primarily used in banks) that uses a strip of carbon paper to create an imprint of the coins contained inside, which will remain after the coins are removed. The purpose of this is to create a record of the original number of coins to facilitate their counting and verification.
Date:
November 15, 1921
Creator:
Mohr, Arthur D.
System:
The Portal to Texas History
Cotton-Cleaner and Boll-Breaker.
Patent for cotton cleaning and boll-breaking apparatus that simplifies assembling, disassembling, and adjusting parts. The apparatus uses a suction that feeds the material into the rotating blades for cleaning. Special features include removable screen frames, refuse collecting pockets, and replaceable blades.
Date:
November 15, 1921
Creator:
Stacy, Grover C.
System:
The Portal to Texas History
Snowplow.
Patent for a new snowplow design for use at the front of a motor vehicle, steam car, or electric car. The snowplow is triangular in shape, and has sides that can be adjusted vertically, to increase the height of the plow.
Date:
November 15, 1921
Creator:
Jezova, Mary
System:
The Portal to Texas History
Steering Attachment for Automobiles
Patent for a steering attachment for automobiles, more specifically automobiles of Ford. This invention helps to provide stiffer friction for the steering wheel which provides stability when the driver no longer has a grip on the steering wheel. This helps keep the steering wheel from veering off and stays on track.
Date:
November 15, 1921
Creator:
Balmos, Edward J.
System:
The Portal to Texas History
Well-Drill Wrench.
Patent for a well drill wrench that improves upon William Ellinger's patent 1,327,379, issued January 6, 1920. This improvement eliminates friction between the rotatable and stationary parts of the wrench and ensures that the rotatable part is fully supported during its entire rotation, "as when screwing or unscrewing the drill bit" (lines 109-110).
Date:
November 15, 1921
Creator:
Ellinger, William H.
System:
The Portal to Texas History
Embroidery-Needle.
Patent for an embroidery needle that is simplified version for easy use and avoid complications. The embroidery needle has a better grip for the user.
Date:
March 15, 1921
Creator:
Pade, George V. & Neitzel, Conrad T.
System:
The Portal to Texas History
Fuel-Valve Lock for Motor-Cars.
Patent for a fuel shut-off valve for motor cars. The device would prevent fuel from flowing from the tank to the engine with the turn of a key, preventing the vehicle from being stolen.
Date:
March 15, 1921
Creator:
McQueen, Roy O. & Batson, Joseph A.
System:
The Portal to Texas History
Grain-Car.
Patent for a grain car, with improved methods or loading and unloading the grain, as well as an easy method for converting the car to haul regular cargo.
Date:
March 15, 1921
Creator:
Dukes, Sandy
System:
The Portal to Texas History
Needle for Hand-Embroidery and Similar Work.
Patent for a hand embroidery needle that allows for easy swapping of different sized points.
Date:
March 15, 1921
Creator:
Pade, George V. & Neitzel, Conrad T.
System:
The Portal to Texas History