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| Number | Title | Issue Date |
| 8148161 | Selective membranes/thin films for analytical applications Disclosed herein is a composition having: a polymer having a carbosilane or siloxane backbone and pendant hydrogen-bond acidic groups; and a filler material having polar groups. The polymer is not covalently bound to the filler material. ... | 04/03/2012 |
| 8076150 | Methods and apparatus for chemical detection training Methods and apparatus for chemical warfare agent detection training are provided. More particularly, methods and apparatus are provided to simulate the detection of low volatility chemical warfare agents by simulating the use of currently fielded U.S. Army detection... | 12/13/2011 |
| 8057761 | Detecting nerve agents and determining the types thereof An embodiment of a chemical detector has at least one detection window and at least first and second ampoules selectively communicatively coupled to the at least one detection window. The first ampoule contains a first substance that can hydrolyze a nerve agent. The... | 11/15/2011 |
| 8003398 | Methods and compositions for detecting glyphosate and metabolites thereof The present invention provides various methods and compositions which allow for determining the presence or amount of glyphosate, N-acetylglyphosate, N-acetyl AMPA or aminomethyl phosphoric acid (AMPA) and its various metabolites in a variety of test matrices. In on... | 08/23/2011 |
| 7951607 | Compositions and methods for detecting nerve agents The present invention provides methods and compositions for detecting, identifying and measuring the abundance of chemical nerve agents. Methods and compositions of the present invention are capable of providing selective detection of phosphorous based nerve agents,... | 05/31/2011 |
| 7935535 | Nanostructure material with metallic oxide and method for detecting phosphorus-containing compounds The invention provides a nanostructure material with metallic oxide including a product fabricated by the following steps: condensing silicon oxide or titanium oxide with a surfactant, obtaining a mesoporous silicon oxide or titanium oxide; mixing the mesoporous sil... | 05/03/2011 |
| 7799571 | Control of N-(phosphonomethyl)iminodiacetic acid conversion in manufacture of glyphosate This invention relates to the preparation of N-(phosphonomethyl)glycine (“glyphosate”) from N-(phosphonomethyl)iminodiacetic acid (“PMIDA”), and more particularly to methods for control of the conversion of PMIDA, for the identification of reaction end point... | 09/21/2010 |
| 7674627 | Compositions and methods for detecting nerve agents The present invention provides methods and compositions for detecting, identifying and measuring the abundance of chemical nerve agents. Methods and compositions of the present invention are capable of providing selective detection of phosphorous based nerve agents,... | 03/09/2010 |
| 7531359 | Cavitands for chemical vapor sensing The chemical compound: Each R1 is H or CH3. A device for detecting an analyte having: a substrate; a film on the substrate, a flow cell for delivering air containing the analyte to the film, and an appar... | 05/12/2009 |
| 7442340 | Chemical agent monitoring system A method and apparatus for sampling for the chemical warfare agent VX, where it is advantageous for the VX to be converted to its G-analog to facilitate aspirator induced movement of the sample through a sample line, to a sampling tube or to sample detection apparat... | 10/28/2008 |
| 7425453 | Integrated circuit porphyrin-based optical Fabry-Perot chemical sensor A Fabry-Perot cavity has a pair of partially transmissive, partially reflective, surfaces. A first of the surfaces is flexibly suspended adjacent and parallel to a second of the surfaces. A gap exists between the surfaces. A variable electrostatic potential permits ... | 09/16/2008 |
| 7416703 | Polymer based lanthanide luminescent sensors for the detection of organophosphorus compounds A device for measuring and detecting the organophosphonis compounds, such as a pesticides or a nerve agents is provided. The devices function by selectively binding an organophosphorous compound to a luminescent functionality-imprinted copolymer. The copolymers poss... | 08/26/2008 |
| 7393692 | SERS method for rapid pharmacokinetic analysis of drugs in saliva The method and apparatus rapidly separate drugs and their metabolites from saliva and, in a continuous sequence of steps, rapidly detect, identify and quantify them through surface-enhanced Raman spectroscopy. ... | 07/01/2008 |
| 7393691 | SERS method and apparatus for rapid extraction and analysis of drugs in saliva The method and apparatus rapidly separate drugs and their metabolites from saliva and, in a continuous sequence of steps, rapidly detect, identify and quantify them through surface-enhanced Raman spectroscopy. ... | 07/01/2008 |
| 7390465 | System and method for contamination detection within sealed containers A system and a method to detect biological and chemical agents in a sealed contained at, for example, a mail-processing center. The system includes filtration and vacuum subsystems cooperatively working to draw an air sample from the interior of the particulate cont... | 06/24/2008 |
| 7351525 | Positronium-mediated method for identifying a contaminant gas in a gaseous mixture The present invention discloses an in vitro method to identify a contaminant gas in a specimen comprising a mixture of gases as a function of the decay rate of at least one species of positronium. The positronium is obtained by directing the positrons from a positro... | 04/01/2008 |
| 7347974 | Materials, method and apparatus for detection and monitoring of chemical species A method for investigating a target environment to determine whether or in what amount a chemical species may be present therein, which comprises: (a) exposing to said environment an article of manufacture comprising a multiplicity of particles in close-packed orien... | 03/25/2008 |
| 7332345 | Chemical sensor system A chemical sensing apparatus and method for the detection of sub parts-per-trillion concentrations of molecules in a sample by optimizing electron utilization in the formation of negative ions is provided. A variety of media may be sampled including air, seawater, d... | 02/19/2008 |
| 7291478 | Rapid screening and analysis of present and potential nerve agents and their degradation products Methods are described for detecting organophosphorus compounds in a sample. ... | 11/06/2007 |
| 7282710 | Scanning probe microscopy tips composed of nanoparticles and methods to form same A structure and method for improving the spatial resolution of a scanning probe microscope (SPM) tip, which has been coated with a layer of chemically-synthesized nanoparticles. The nanoparticles are either single-species or heterogeneous, such that the single-speci... | 10/16/2007 |
| 7279303 | Positronium-mediated method for identifying an organism The present invention discloses an in vitro method to identify an organism in a specimen as a function of the decay rate of at least one species of positronium. The positronium is obtained by directing the positrons from a positron source in to a vessel that contain... | 10/09/2007 |
| 7232474 | Process for producing gold nanoparticles Gold nanoparticles having a particle size of 4-15 nM are synthesized by the reduction of hydrogen tetrachloroaurate (III) trihydrate using a suitable reducing agent such as sodium citrate in the presence of unmodified α, β or γ-cyclodextrin. The particle size is ... | 06/19/2007 |
| 7226794 | Surface-enhanced Raman spectroscopy for biosensor systems and methods for determining the presence of biomolecules Biosensors, methods, and systems for determining the presence of biomolecules using surface-enhanced Raman spectroscopy (SERS) are provided. ... | 06/05/2007 |
| 7205152 | Closed loop system and method for air sampling of mail products A self-contained closed loop system and method for detecting contaminants in, on, and around objects. The system includes an air duct subsystem connecting at least one sensor to a sealed housing containing a rotating container. Air from the sealed housing is circula... | 04/17/2007 |
| 7204125 | Pressure activated sampling system Screening of items for the presence of contaminants, such as explosives residue, is accomplished by subjecting an item loaded into a pressure chamber to a pressure substantially in excess of atmospheric pressure conditions and rapidly decompressing the item to the a... | 04/17/2007 |
| 7157052 | Linear chemoselective carbosilane polymers and methods for use in analytical and purification applications This invention relates generally to a new class of chemoselective polymer materials. In particular, the invention relates to linear polycarbosilane compounds for use in various analytical applications involving sorbent polymer materials, including chromatoghraphy, c... | 01/02/2007 |
| 7153582 | Hyperbranched chemoselective silicon-based polymers for chemical sensor applications The invention provides a device for selective molecular recognition, the device comprising a sensing portion, wherein said sensing portion includes a substrate having coated thereon a layer comprising a hyperbranched compound having: | 12/26/2006 |
| 7132294 | Functionalized small molecules for use in chemical sensors The invention provides a device for selective molecular recognition, the device comprising a sensing portion, wherein said sensing portion includes a substrate having coated thereon a layer comprising a non-volatile, small molecule compound having at least two penda... | 11/07/2006 |
| 7129094 | Chemical agent simulant training composition A composition for simulating and evaluating chemical agent contamination which can be used to safely train military personnel in handling chemical agent contamination. It has a vapor generating component having a vapor pressure of from about 0.1 to about 30 mm Hg at... | 10/31/2006 |
| 7105274 | Photoluminescent ethylene sensors A photoluminescent polymer/transition metal complex is disclosed which is capable of selectively binding to alkenes to thereby alter the photoluminescence of the complex. In one embodiment, a poly(vinyl phenyl ketone)/Ag(I) complex is disclosed which reversibly and ... | 09/12/2006 |
| 7051577 | Multi-functional leak detection instrument along with sensor mounting assembly and methodology utilizing the same A leak detection instrument may comprise a housing, a gas sensor supported relative to the housing, an AE sensor for generating a sound detection input signal upon exposure to gas leakage, processing circuitry for producing output signals, and an output device. The ... | 05/30/2006 |
| 7041508 | Positron annihilation monitor and method for detecting hazardous materials A monitor is provided for measuring the presence of a small concentration of at least one hazardous material within a vessel. A positron source emits positrons into an annihilation region of the vessel. A plurality of species of positronium are formed from the posit... | 05/09/2006 |
| 7005982 | Carrier security system A process deploys detection devices in the carrier vehicles, collection facilities and collection boxes to determine if hazardous materials have deposited. The system is designed to provide detection, identification and measurement of chemical, biological and DNA/RN... | 02/28/2006 |
| 6958242 | Rapid assay, method and system for detecting biowarfare agents Provided herein are methods for preliminary analysis of suspect samples, which can be used in triaging possible contaminated sites (e.g., sites contaminated or thought to be contaminated by biowarfare agents). In some embodiments, the methods involve testing for the... | 10/25/2005 |
| 6929778 | Solid phase microextraction field kit A field kit for the collection, isolation and concentration of trace amounts of high explosives (HE), biological weapons (BW) and chemical weapons (CW) residues in air, soil, vegetation, swipe, and liquid samples. The field kit includes a number of Solid Phase Micro... | 08/16/2005 |
| 6913928 | Hazardous chemical simulants Disclosed are hazardous chemical simulant compositions that can be used to simulate hazardous chemicals and methods for using hazardous chemical simulants. The compositions can include a phosphor, which emits visible light in the presence of ultraviolet light. The m... | 07/05/2005 |
| 6895801 | Pressure activated sampling system Screening of items for the presence of contaminants, such as explosives residue, is accomplished by subjecting an item loaded into a pressure chamber to a pressure substantially in excess of atmospheric pressure conditions and rapidly decompressing the item to the a... | 05/24/2005 |
| 6887710 | Robust system for screening mail for biological agents Items of mail are rapidly processed in a mail sampling system to determine if the mail is contaminated with a chemical or biological agent. The mail sampling system maintains a negative pressure in a containment chamber and includes a triggering sampler that makes a... | 05/03/2005 |
| 6884997 | Method and apparatus for detecting dangerous substances and substances of interest A dangerous substance detecting apparatus comprises an oven for accommodating a wiping member stuck with a sample derived from a dangerous substance, a light source for emitting infrared rays for heating the sample, an ion source for ionizing the sample evaporated i... | 04/26/2005 |
| 6875618 | Method for phosphorus quantitation A method of detecting and measuring phosphorus in samples is disclosed. The measurement of phosphorylation is made with an inductively coupled plasma mass spectrometer (ICP-MS), coupled to a reactive collision cell. The reactive collision cell is employed to ensure ... | 04/05/2005 |
