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| Number | Title | Issue Date |
| 8173438 | Microbiological assessment method and device utilizing oxygen gradient sensing There is disclosed a biological indicator (BI) test utilizing oxygen sensing within a microenvironment as a means for determining the presence of viable microorganisms capable of growth, a method for biological indicator (BI) testing for determining the completeness... | 05/08/2012 |
| 8039265 | Determining oxygen content of metal species in heterogeneous catalysts The oxygen content of metal species in a heterogeneous catalyst is determined using volumetric adsorption measurements. Such measurements are employed to quantify the amount of reduction gas that it takes to reduce metal species of a catalyst sample, and the oxygen ... | 10/18/2011 |
| 7416899 | Method and apparatus for measuring trace ingredients in water A method and an apparatus are provided for measuring trace ingredients in water, which make it possible to perform detection and quantitative determination of silica, phosphorus or arsenic in a sample solution. The method includes adding a molybdate ion to a sample ... | 08/26/2008 |
| 7387764 | Contained oxygen analyzing apparatus and contained analyzing method An apparatus for analyzing the amount of gas in a solid sample such as a contained oxygen analyzing apparatus and method utilizing a preliminary reducing furnace which can be connected to an analyzing furnace by a transfer unit. A sample such as steel can be reduced... | 06/17/2008 |
| 7368153 | Oxygen detection system for a rigid container The present invention relates to the non-invasive use of a luminescent compound to detect and measure concentrations of oxygen dissolved in a rigid container, especially a bottle, a tray, a carton, a lidstock associated with a tray, a stand up pouch, or a paperboard... | 05/06/2008 |
| 7360397 | Detector with condenser An ambient condition detector has a housing that carries a sensor of an airborne constituent such as a gas, and a condenser for minimizing an inflow of moisture into the sensor. A filter can be used to reduce fluid flow velocity prior to passing through or by the co... | 04/22/2008 |
| 7309020 | Deposition fabrication using inkjet technology A method of fabricating a circuit lead, the method comprising: (a) depositing a slurry upon a substrate in a predetermined pattern, the substrate including a plurality of substantially uniformly patterned micropores operative to drain a fluid component of the slurry... | 12/18/2007 |
| 7255836 | Analytical sensitivity enhancement by catalytic transformation A device and method for quantifying an impurity in an input gas stream. The device and method employ a catalyst to convert the impurity to a detectable species in an output gas stream, and the concentration of the detectable species is then measured by means of a de... | 08/14/2007 |
| 7228160 | System, apparatus and method for inferring glucose levels within the peritoneum with implantable sensors A glucose sensor assembly useful in patient systems includes an oxygen sensor from which glucose levels in the vicinity of the peritoneal cavity may be inferred. The sensor assembly may be associated with electronics, such as any or all of a DC power supply, an LED ... | 06/05/2007 |
| 7138270 | Assay device and method for chemical or biological screening An assay device (1) comprises a base (2) and glass plate lid (3). The base (2) has an array of shallow microwells (4), each having a flat rim (9), all rims being co-planar. When the lid (3) is placed on the base (2... | 11/21/2006 |
| 7112443 | High throughput permeability testing of materials libraries A library of material samples is screened for properties such as permeability. A library of material samples is provided. A stimulus such as an exposure to a permeate fluid is provided to each member of the library. A response of each of the material samples due to ... | 09/26/2006 |
| 7087436 | Membrane countercurrent exchanger and membrane inlet mass spectrometer for the analysis of gas partial pressure in liquid samples A method and apparatus for the analysis of blood or other liquids by mass spectrometry to determine the partial pressures of gases and other volatile substances dissolved in the blood or other liquid in a manner independent of the solubility of the gases in the bloo... | 08/08/2006 |
| 7080544 | Apparatus system and method for gas well site monitoring A System and a Method of initializing and using that system are described in various embodiments all suitable for use remotely monitoring gas escapes on oil or gas well-sites, particularly as early warning technologies for use in preventing injury to workers or popu... | 07/25/2006 |
| 6956206 | Negative ion atmospheric pressure ionization and selected ion mass spectrometry using a 63NI electron source Negative ion atmospheric pressure ionization mass spectrometers and selected ion mass spectrometers with a 63Ni ion source and a drift tube for reaction of a sample with electrons from the 63Ni ion source prior to analysis of a sample by mass s... | 10/18/2005 |
| 6913731 | Oxygen probe Intended for application on ducts through which flow a fluid at a high temperature, and particularly at a high pressure, comprising two bodies (4) and (8) which axially screw onto each other, one body (4) provided with a threaded neck (5)... | 07/05/2005 |
| 6797390 | Functional polymer with supported pressure-sensitive luminophore, and pressure-sensitive paint and pressure-sensitive element using same An oxygen-quenching luminophore constituting part of a pressure-sensitive luminophore is directly bonded by a covalent bond to an organic polymer compound having trimethylsilyl groups, so the luminophore molecules are retained in the polymer and free aggregation is ... | 09/28/2004 |
| 6703245 | Oxygen detecting composition The oxygen detecting composition of the present invention includes a layered silicate, a cationic surfactant, an organic colorant, a reducing agent, and optionally a basic substance. The oxygen detecting composition is suitable for indicating the presence... | 03/09/2004 |
| 6664111 | Fluorescence based oxygen sensor systems Sensing elements, sensor systems and methods for determining the concentration of oxygen and oxygen-related analytes in a medium are provided. The sensing element comprises a solid polymeric matrix material that is permeable to oxygen or an oxygen related... | 12/16/2003 |
| 6627443 | Colored composition The present invention relates to new color compositions which are especially suitable to be used in oxygen indicators. The compositions comprise iron(II), an agent containing pyrogallol entities and an organic acid.... | 09/30/2003 |
| 6555379 | Device for monitoring a processing liquid A device for monitoring a processing liquid comprising at least one sensor for generating at least one monitoring signal, and a device for processing the monitoring signal and for generating a control signal for directly or indirectly influencing the comp... | 04/29/2003 |
| 6399387 | Colored composition The present invention relates to new color compositions which are especially suitable to be used in oxygen indicators. The compositions comprise iron(II), an agent containing pyrogallol entities and an organic acid.... | 06/04/2002 |
| 6395556 | Polarization based sensing The present invention relates to the determination of the presence or concentration of an analyte in a sample by visual or electronic element, using polarization based sensing techniques (14) employing fluorescent sensing (11) and reference molecules (10)... | 05/28/2002 |
| 6319429 | Oxygen sensitive resistance material Oxygen sensitive resistance materials for use with oxygen sensors, in particular λ probes are described. These materials are based on the fact that with complex metal oxides it is possible--by adding suitable doping substances--to achieve a negligible te... | 11/20/2001 |
| 6306661 | Water soluble luminescence oxygen sensor and method The oxygen concentration of a sample is determined utilizing a water-soluble metal ligand complex which is brought into interactive proximity with the sample to form a mixture. The mixture is irradiated with electromagnetic light energy so as to cause emi... | 10/23/2001 |
| 6214628 | Method of conducting an assay of a sample containing an analyte of interest In accordance with the present invention, a method of conducting an assay of a sample containing an analyte of interest includes the step of forming a mixture so as to bring a metal-ligand complex into interactive proximity with the sample containing the ... | 04/10/2001 |
| 6146896 | Method and apparatus for measuring the nitrification effectiveness of activated sludge A method and apparatus for determining nitrification effectiveness of activated sludge in an aqueous solution, includes supplying equivalent quantities of an activated sludge, an aqueous solution, and a gas containing oxygen to each of first and second re... | 11/14/2000 |
| 6093572 | Colored composition The present invention relates to new color compositions which are especially suitable to be used in oxygen indicators. The compositions comprise iron(II), an agent containing pyrogallol entities and an organic acid.... | 07/25/2000 |
| 6037181 | Method and apparatus for determining blood oxygen transport The present invention relates to a method and apparatus for determining blood oxygen transport, and to measure lipid levels by correlating these levels with the rate at which oxygen diffuses through the red blood cell membrane.... | 03/14/2000 |
| 5952188 | Reusable immobilized microbial composition useful as ready-to-use seed inoculum in BOD analysis A reusable immobilized microbial composition is formulated. The formulated microbial composition comprises a synergistic mixture of the bacterial strains of Enterobacter cloaca, Citrobacter amalonaticus, Pseudomonas aeruginosa,Yersinia enterocolitica, Kle... | 09/14/1999 |
| 5919710 | Optical method for quantitating dissolved oxygen in fuel A method for the quantitative determination of dissolved oxygen in a liquid fuel includes the steps of doping a sample of the fuel with a preselected concentration of a probe material including a luminophor which exhibits luminescence of wavelength which ... | 07/06/1999 |
| 5894082 | Apparatus for measuring oxygen within molten substance An apparatus for measuring oxygen within a molten substance comprises a compact oxygen probe unit constructed by assembling a tubular shell whose one end is closed, which is made of solid electrolyte and which is to be soaked into the molten substance to ... | 04/13/1999 |
| 5882932 | Continuous quick measurement of biochemical oxygen demand and apparatus A continuous, quick measurement method of BOD, and an apparatus therefor is disclosed. The apparatus comprises a sample tank in which a sample is prepared suitably for the measurement, a reactor in which microorganisms maintain their activity, a medium re... | 03/16/1999 |
| 5863460 | Oxygen sensing membranes and methods of making same A polymeric sensing membrane having a Stern-Volmer constant within a pre-determined range of Stern-Volmer constants. The membrane includes a polymeric material having a fluorescent dye molecule dispersed therein. The dye molecule is capable of having its ... | 01/26/1999 |
| 5854078 | Polymerized crystalline colloidal array sensor methods Novel sensor devices composed of a crystalline colloidal array (CCA) polymerized in a hydrogel are disclosed. The hydrogels are characterized as being capable of shrinking and swelling in response to specific stimuli applied thereto. As the hydrogels shri... | 12/29/1998 |
| 5789253 | Methods for rapid equalibration of dissolved gas composition An apparatus and method of equilibrating the dissolved gas composition of an aqueous fluid to reflect the predetermined gas composition contained in a gas equilibration reservoir. The equilibrated aqueous fluid can be used in a method of determining the c... | 08/04/1998 |
| 5750408 | Method of modifying an automotive type oxygen sensor for use in an industrial process analyzer In an oxygen analyzer for an industrial process, an automotive type oxygen sensor has a sensor element assembly with an outer thin walled shield containing insulation and surrounding the sensor element of the automotive type oxygen sensor.... | 05/12/1998 |
| 5742516 | Indoor air quality and ventilation assessment monitoring device A monitoring device system and a method for controlling ventilation in an enclosed or confined environment by regulating the effective ventilation rate, air exchange rate, mixing factors, stratification of air within the confined area, the percentage of o... | 04/21/1998 |
| 5733506 | Gas sensors and compounds suitable therefor A gas sensor has a gas sensing component which permits measurement of a change in optical absorption and, optionally also a change in electrical conductivity on exposure to an environment containing certain gases. The gas sensing component comprises a met... | 03/31/1998 |
| 5728422 | Ratiometric fluorescence method of making for measuring oxygen A ratiometric optical sensors method of making is provided to measure dissolved oxygen in a fluid sample. The sensor is formulated so as to contain an oxygen permeable membrane of a cured perfluorinated urethane polymer and, incorporated therein, an oxyge... | 03/17/1998 |
| 5723337 | Method for measuring and controlling the oxygen concentration in silicon melts and apparatus therefor A method for measuring and controlling the oxygen concentration in silicon melts which are contained in a silica glass crucible or which can be touched by a silica glass surface can especially be used for achieving a defined, uniform axial and radial oxyg... | 03/03/1998 |
