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| Number | Title | Issue Date |
| 7186379 | Continuous real-time measurement of aqueous cyanide This invention provides a method and system capable of the continuous, real-time measurement of low concentrations of aqueous free cyanide (CN) using an on-line, flow through system. The system is based on the selective reactivity of cyanide anions and the character... | 03/06/2007 |
| 6945272 | Passively actuated valve A passively actuated valve for isolating a high pressure zone from a low pressure zone and discontinuing the isolation when the pressure in the high pressure zone drops below a preset threshold. If the pressure in the high pressure zone drops below the preset thresh... | 09/20/2005 |
| 6539780 | Self-compensating tensiometer and method A pressure self-compensating tensiometer and method to in situ determine below grade soil moisture potential of earthen soil independent of changes in the volume of water contained within the tensiometer chamber, comprising a body having first and second ... | 04/01/2003 |
| 6474903 | Retractable barrier strip A portable barrier strip having retractable tire-puncture spikes for puncturing a vehicle tire. The tire-puncture spikes have an armed position for puncturing a tire and a retracted position for not puncturing a tire. The strip comprises a plurality of ba... | 11/05/2002 |
| 6451093 | Centripetal demister A centripetal demister system and method for the removal of moisture from a moisture laden gas stream using both centrifugal and centripetal force to shear the moisture from a inlet gas, the centripetal force also directing the inlet gas radially inward f... | 09/17/2002 |
| 6263726 | Sidewall tensiometer and method of determining soil moisture potential in below-grade earthen soil A sidewall tensiometer to in situ determine below-grade soil moisture potential of earthen soil includes, a) a body adapted for insertion into an opening in earthen soil below grade, the body having lateral sidewalls; b) a laterally oriented porous materi... | 07/24/2001 |
| 6178218 | Nondestructive examination using neutron activated positron annihilation A method is provided for performing nondestructive examination of a metal specimen using neutron activated positron annihilation wherein the positron emitter source is formed within the metal specimen. The method permits in situ nondestructive examination... | 01/23/2001 |
| 6125912 | Advanced neutron absorber materials A neutron absorbing material and method utilizing rare earth elements such as gadolinium, europium and samarium to form metallic glasses and/or noble base nano/microcrystalline materials, the neutron absorbing material having a combination of superior neu... | 10/03/2000 |
| 6036030 | Method for producing a selectively permeable separation module A method and apparatus is provided for casting a polymeric membrane on the inside surface of porous tubes to provide a permeate filter system capable of withstanding hostile operating conditions and having excellent selectivity capabilities. Any polymer i... | 03/14/2000 |
| 5903622 | Accelerator-based neutron source for boron neutron capture therapy (BNCT) and method A source for boron neutron capture therapy (BNCT) comprises a body of photoneutron emitter that includes heavy water and is closely surrounded in heat-imparting relationship by target material; one or more electron linear accelerators for supplying electr... | 05/11/1999 |
| 5828143 | Magnetostrictive method and apparatus for propelling an object A magnetostrictive method and apparatus for propelling an object through a medium wherein one end of a magnetostrictive rod is firmly attached to a housing connected to the object and the other end of the rod is in contact, direct or through a flexible me... | 10/27/1998 |
| 5799257 | Process for gamma ray induced degradation of polychlorinated biphenyls The invention is a process for the in-situ destruction of polychlorinated biphenyl (PCB) compounds in transformer oils and transformers. These compounds are broken down selectively by irradiation of the object or mixture using spent nuclear fuel or any is... | 08/25/1998 |
| 5795751 | Biofilter for removal of nitrogen oxides from contaminated gases under aerobic conditions A biofilter for reducing concentrations of gaseous nitrogen oxides in a polluted gas comprises a porous organic filter bed medium disposed in a housing, the filter bed medium including a mixed culture of naturally occurring denitrifying bacteria for conve... | 08/18/1998 |
| 5718863 | Spray forming process for producing molds, dies and related tooling A method for spray forming manufacturing of near-net-shape molds, dies and related toolings, wherein liquid material such as molten metal, metallic alloys, or polymers are atomized into fine droplets by a high temperature, high velocity gas and deposited ... | 02/17/1998 |
| 5697437 | System for the removal of contaminant soil-gas vapors A system extracts contaminated vapors from soil or other subsurface regions by using changes in barometric pressure to operate sensitive check valves that control air entry and removal from wells in the ground. The system creates an efficient subterranean... | 12/16/1997 |
| 5669961 | Method for the purification of noble gases, nitrogen and hydrogen A method and apparatus for the purification and collection of hydrogen isotopes in a flowing inert gaseous mixture containing impurities, wherein metal alloy getters having the capability of sorbing non-hydrogen impurities such as oxygen, carbon dioxide, ... | 09/23/1997 |
| 5660201 | Multiple source/multiple target fluid transfer apparatus A fluid transfer apparatus includes: a) a plurality of orifices for connection with fluid sources; b) a plurality of orifices for connection with fluid targets; c) a set of fluid source conduits and fluid target conduits associated with the orifices; d) a... | 08/26/1997 |
| 5637499 | Method for enhancing microbial utilization rates of gases using perfluorocarbons A method of enhancing the bacterial reduction of industrial gases using perfluorocarbons (PFCs) is disclosed. Because perfluorocarbons (PFCs) allow for a much greater solubility of gases than water does, PFCs have the potential to deliver gases in higher ... | 06/10/1997 |
| 5552610 | Device and method for accurately measuring concentrations of airborne transuranic isotopes An alpha continuous air monitor (CAM) with two silicon alpha detectors and three sample collection filters is described. This alpha CAM design provides continuous sampling and also measures the cumulative transuranic (TRU), i.e., plutonium and americium, ... | 09/03/1996 |
| 5493308 | Close range fault tolerant noncontacting position sensor A method and system for locating the three dimensional coordinates of a moving or stationary object in real time. The three dimensional coordinates of an object in half space or full space are determined based upon the time of arrival or phase of the wave... | 02/20/1996 |
| 5490187 | Method for gas bubble and void control and removal from metals A method for enhancing the diffusion of gas bubbles or voids attached to impurity precipitates, and biasing their direction of migration out of the host metal (or metal alloy) by applying a temperature gradient across the host metal (or metal alloy). In t... | 02/06/1996 |
| 5464583 | Method for manufacturing whisker preforms and composites A process for manufacturing Si3 N4 /SiAlON whiskers by mixing silicon carbide powder with aluminum nitride powder, adding impurities such as calcium oxide or potassium chloride to control whisker characteristics, forming the mixture ... | 11/07/1995 |
| 5427247 | Method for mobilization of hazardous metal ions in soils A microbial process for removing heavy metals such as bismuth, cadmium, lead, thorium, uranium and other transuranics from soils and sediments, utilizing indigenous, or isolates of indigenous, microorganisms and reducing agents, such as cysteine or sodium... | 06/27/1995 |
| 5349442 | Hand held phase-shifting diffraction moire interferometer An interferometer in which a coherent beam of light is generated within a remote case and transmitted to a hand held unit tethered to said remote case, said hand held unit having optical elements for directing a pair of mutually coherent collimated laser ... | 09/20/1994 |
| 5279166 | Self-aligning biaxial load frame An self-aligning biaxial loading apparatus for use in testing the strength of specimens while maintaining a constant specimen centroid during the loading operation. The self-aligning biaxial loading apparatus consists of a load frame and two load assembli... | 01/18/1994 |
| 5275327 | Integrated optical sensor An integrated optical sensor for arc welding having multifunction feedback control. The sensor, comprising generally a CCD camera and diode laser, is positioned behind the arc torch for measuring weld pool position and width, standoff distance, and post-w... | 01/04/1994 |
| 5256544 | Microbial solubilization of phosphate A process is provided for solubilizing phosphate from phosphate containing ore by treatment with microorganisms which comprises forming an aqueous mixture of phosphate ore, microorganisms operable for solubilizing phosphate from the phosphate ore and main... | 10/26/1993 |
| 5252212 | Spray forming polymer membranes, coatings and films A method of forming a polymer film having controlled physical and chemical characteristics, wherein a plume of nebulized droplets of a polymer or polymer precursor is directed toward a substrate from a converging/diverging nozzle having a throat at which ... | 10/12/1993 |
| 5231468 | Beam shuttering interferometer and method A method and apparatus resulting in the simplification of phase shifting interferometry by eliminating the requirement to know the phase shift between interferograms or to keep the phase shift between interferograms constant. The present invention provide... | 07/27/1993 |
| 5206174 | Method of photon spectral analysis A spectroscopic method to rapidly measure the presence of plutonium in soils, filters, smears, and glass waste forms by measuring the uranium L-shell x-ray emissions associated with the decay of plutonium. In addition, the technique can simultaneously acq... | 04/27/1993 |
| 5181778 | Ultrasonic tomography for in-process measurements of temperature in a multi-phase medium A method and apparatus for the in-process measurement of internal particulate temperature utilizing ultrasonic tomography techniques to determine the speed of sound through a specimen material. Ultrasonic pulses are transmitted through a material, which c... | 01/26/1993 |
