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| Number | Title | Issue Date |
| 7362235 | Impedance-matched drilling telemetry system A downhole telemetry system that uses inductance or capacitance as a mode through which signal is communicated across joints between assembled lengths of pipe wherein efficiency of signal propagation through a drill string, for example, over multiple successive pipe... | 04/22/2008 |
| 7244359 | Inorganic ion sorbent method A process and medium for decontamination of water containing anionic species including arsenic and chromium, wherein compounds comprising divalent and trivalent metal oxides and sulfides are used to form surface complexes with contaminants under pH conditions within... | 07/17/2007 |
| 7124507 | Method of manufacturing a heat pipe wick with structural enhancement Heat pipe wick structure wherein a stout sheet of perforated material overlays a high performance wick material such as stainless steel felt affixed to a substrate. The inventive structure provides a good flow path for working fluid while maintaining durability and ... | 10/24/2006 |
| 7122502 | Inorganic ion sorbents A process and medium for decontamination of water containing anionic species including arsenic and chromium, wherein compounds comprising divalent and trivalent metal oxides and sulfides are used to form surface complexes with contaminants under pH conditions within... | 10/17/2006 |
| 7074336 | Inorganic ion sorbents and methods for using the same A process and medium for decontamination of water containing anionic species including arsenic and chromium, wherein compounds comprising divalent and trivalent metal oxides and sulfides are used to form surface complexes with contaminants under pH conditions within... | 07/11/2006 |
| 6802227 | Method and apparatus for optimized sampling of volatilizable target substances An apparatus for capturing, from gases such as soil gas, target analytes. Target analytes may include emanations from explosive materials or from residues of explosive materials. The apparatus employs principles of sorption common to solid phase microextraction, and... | 10/12/2004 |
| 6648063 | Heat pipe wick with structural enhancement Heat pipe wick structure wherein a stout sheet of perforated material overlays a high performance wick material such as stainless steel felt affixed to a substrate. The inventive structure provides a good flow path for working fluid while maintaining dura... | 11/18/2003 |
| 6581445 | Distributed fiber optic moisture intrusion sensing system Method and system for monitoring and identifying moisture intrusion in soil such as is contained in landfills housing radioactive and/or hazardous waste. The invention utilizes the principle that moist or wet soil has a higher thermal conductance than dry... | 06/24/2003 |
| 6563256 | Low work function materials for microminiature energy conversion and recovery applications Low work function materials are disclosed together with methods for their manufacture and integration with electrodes used in thermionic conversion applications (specifically microminiature thermionic conversion applications). The materials include a mixe... | 05/13/2003 |
| 6527691 | In situ formation of magnetite reactive barriers in soil for waste stabilization Reactive barriers containing magnetite and methods for making magnetite reactive barriers in situ in soil for sequestering soil contaminants including actinides and heavy metals, organic materials, iodine and technetium are disclosed. According to one emb... | 03/04/2003 |
| 6509669 | Microminiature thermionic converters Microminiature thermionic converters (MTCs) manufactured using MEMS manufacturing techniques including chemical vapor deposition, and having high energy-conversion efficiencies and variable operating temperatures. The MTCs of the invention incorporate cat... | 01/21/2003 |
| 6416252 | In situ formation of phosphate barriers in soil Reactive barriers and methods for making reactive barriers in situ in soil for sequestering soil ontaminants including actinides and heavy metals. The barrier includes phosphate, and techniques are disclosed for forming specifically apatite barriers. The ... | 07/09/2002 |
| 6411007 | Chemical vapor deposition techniques and related methods for manufacturing microminiature thermionic converters Methods of manufacturing microminiature thermionic converters (MTCs) having high energy-conversion efficiencies and variable operating temperatures using MEMS manufacturing techniques including chemical vapor deposition. The MTCs made using the methods of... | 06/25/2002 |
| 6407477 | Thermionic modules Modules of assembled microminiature thermionic converters (MTCs) having high energy-conversion efficiencies and variable operating temperatures manufactured using MEMS manufacturing techniques including chemical vapor deposition. The MTCs incorporate cath... | 06/18/2002 |
| 6405608 | Method and apparatus for optimized sampling of volatilizable target substances An apparatus for capturing, from gases such as soil gas, target analytes. Target analytes may include emanations from explosive materials or from residues of explosive materials. The apparatus employs principles of sorption common to solid phase microextr... | 06/18/2002 |
| 6388163 | Method for chemically inactivating energetic materials and forming a nondetonable product therefrom A method for rendering nondetonble energetic materials, such as are contained in or removed from decommissioned ordnance. The energetic materials are either combined with epoxy hardener or are combined with other compounds, preferably amine compounds, to ... | 05/14/2002 |
| 6329296 | Metal catalyst technique for texturing silicon solar cells Textured silicon solar cells and techniques for their manufacture utilizing metal sources to catalyze formation of randomly distributed surface features such as nanoscale pyramidal and columnar structures. These structures include dimensions smaller than ... | 12/11/2001 |
| 6294858 | Microminiature thermionic converters Microminiature thermionic converts (MTCs) having high energy-conversion efficiencies and variable operating temperatures. Methods of manufacturing those converters using semiconductor integrated circuit fabrication and micromachine manufacturing technique... | 09/25/2001 |
| 6271670 | Method and apparatus for detecting external cracks from within a metal tube A method and tool using a continuous electromagnetic wave from a transverse magnetic-dipole source with a coaxial electric-dipole receiver is described for the detection of external sidewall cracks and other anomalies in boiler tubes and other enclosures.... | 08/07/2001 |
| 6234025 | Ultrasonic inspection apparatus and method using a focused wave device An ultrasonic pulse echo inspection apparatus and method for detecting structural failures. A focus lens is coupled to the transducer to focus the ultrasonic signal on an area to be inspected and a stop is placed in the focus lens to block selected ultras... | 05/22/2001 |
| 6221237 | Electrokinetic removal of charged contaminant species from soil and other media using moderately conductive adsorptive materials Method for collecting and concentrating charged species, specifically, contaminant species in a medium, preferably soil. The method utilizes electrokinesis to drive contaminant species into and through a bed adjacent to a drive electrode. The bed comprise... | 04/24/2001 |
| 6182755 | Bellow seal and anchor An annular seal is made of a collapsible bellows. The bellows can function as an anchor or a seal and is easily set into position using relative component movement. The bellows folds can be slanted and their outer sealing edges can have different profiles... | 02/06/2001 |
| 6160251 | Method and apparatus for distinguishing actual sparse events from sparse event false alarms Remote sensing method and apparatus wherein sparse optical events are distinguished from false events. "Ghost" images of actual optical phenomena are generated using an optical beam splitter and optics configured to direct split beams to a single sensor o... | 12/12/2000 |
| 6125453 | Cut set-based risk and reliability analysis for arbitrarily interconnected networks Method for computing all-terminal reliability for arbitrarily interconnected networks such as the United States public switched telephone network. The method includes an efficient search algorithm to generate minimal cut sets for nonhierarchical networks ... | 09/26/2000 |
| 6091021 | Silicon cells made by self-aligned selective-emitter plasma-etchback process Photovoltaic cells and methods for making them are disclosed wherein the metallized grids of the cells are used to mask portions of cell emitter regions to allow selective etching of phosphorus-doped emitter regions. The preferred etchant is SF6 | 07/18/2000 |
| 6076406 | Integrated sensing platform and method for improved quantitative and selective monitoring of chemical analytes in both liquid and gas phase By measuring two or more physical parameters of a thin sensing film which are altered when exposed to chemicals, more effective discrimination between chemicals can be achieved. In using more than one sensor, the sensors are preferably integrated on the s... | 06/20/2000 |
| 5915268 | Vertical flow chemical detection portal A portal apparatus for screening objects or persons for the presence of trace amounts of chemical substances such as illicit drugs or explosives. The apparatus has a test space, in which a person may stand, defined by two generally upright sides spanned b... | 06/22/1999 |
| 5854431 | Particle preconcentrator An apparatus and method for preconcentrating particles and vapors. The preconcentrator apparatus permits detection of highly diluted amounts of particles in a main gas stream, such as a stream of ambient air. A main gas stream having airborne particles en... | 12/29/1998 |
