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| Number | Title | Issue Date |
| 7628058 | Device and method for thermodynamic measurements on petroleum fluids Device for measuring thermodynamic characteristics of a fluid sample, comprising in combination: a high-pressure cell (6) equipped with a motorized piston, a drying oven surrounding the cell and intended to vary the cell temperature, motorization means arrang... | 12/08/2009 |
| 7392691 | Method and apparatus for detecting the level of a liquid A system for determining the position of a gas/liquid interface of a fluid in a tank having a probe and a controller. The probe has silicon diodes arranged linearly on a substrate. The controller applies power to each of the silicon diodes to make a determination of... | 07/01/2008 |
| 7367226 | Interface detection apparatus and method for detecting hidden interface using microwave An interface detection apparatus detects a position of a hidden interface between first and second materials, the first material having a different physical property from the second material. The apparatus encompasses (a) an irradiation mechanism configured to irrad... | 05/06/2008 |
| 7305868 | Method and system for evaluating lyophobicity of inner wall of fine tube including lyophobic film A method for evaluating lyophobicity of an inner wall of a fine tube having a lyophobic film formed on the inner wall includes a step of setting up a fine tube having a lyophobic film extending from an end of the inner wall of the fine tube to a predetermined positi... | 12/11/2007 |
| 7141815 | Fiber optic-based probe for use in saltwater and similarly conductive media as found in unenclosed natural environments Arrays of optical fibers connected to specially configured electronics, e.g., a phototransistor, an LED, an amplifier, a detector, and display, software and PCMCIA A/D board available on a personal computer, are used to obtain continuous real-time acquisition, proce... | 11/28/2006 |
| 7049622 | Optical position sensor for determining the interface between a clear and an opaque fluid An inexpensive, optical position sensor for measuring a position or length, x, along a one-dimensional curvilinear, coordinate system. The sensor can be used, for example, to determine the position of an interface between a clear and an opaque fluid (such as crude o... | 05/23/2006 |
| 6941825 | Analytical devices based on diffusion boundary layer calibration and quantitative sorption A method and device for determining the concentration of analytes in a sample. The device has a surface with an extraction coating thereon. The method is carried out while the sample is highly agitated to maintain a substantially constant boundary layer. The sample ... | 09/13/2005 |
| 6928862 | Method of monitoring dual-phase liquid and interface levels A dual-phase level monitoring (DPLM) instrument that provides continuous signals that enables determination of the location of the top surface of the lighter of two immiscible fluids (the product) and the hydrostatic pressure below the total fluid column of both imm... | 08/16/2005 |
| 6763704 | Foam detector for concentrator attachment for gas chromatograph A foam detector generally including a pair of leads positioned adjacent to a surface layer of a fluid so that foam created on a surface layer of the fluid contacts at least one lead and sends a signal to a controller connected to the leads. ... | 07/20/2004 |
| 6477891 | Process for affinity viscosimetry and viscosimetric affinity sensor The invention concerns a process for affinity viscosimetry and a viscosimetric affinity sensor on the basis of sensitive liquids with analyte-dependent viscosity which are localized within a perfusable dialysis chamber and contain colloidal constituents w... | 11/12/2002 |
| 6444172 | Water quality meter and water quality monitoring system A water quality meter is composed of a plurality of water quality monitoring meters including analyzing units for analyzing water samples introduced from a water distribution pipe, each analyzing unit analyzing the water samples and a measuring cell, and ... | 09/03/2002 |
| 6401529 | Apparatus and method for determining constituent composition of a produced fluid A downhole apparatus (100) for determining the constituent composition of a produced fluid is disclosed. The apparatus (100) includes a vessel (106) having an interior chamber (108) that receives and contains a sample of the produced fluid. In the interio... | 06/11/2002 |
| 6398930 | Water quality meter and water quality monitoring system A water quality meter is composed of a plurality of analyzing units for analyzing water samples introduced from a water distribution pipe, each analyzing unit including a reagent mixing cell and a measuring cell, and a liquid introducing unit integrated w... | 06/04/2002 |
| 6290908 | Water quality meter and water monitoring system A water quality meter is composed of a plurality of analyzing units for analyzing water samples introduced from a water distribution pipe, each analyzing unit including a reagent mixing cell and a measuring cell, and a liquid introducing unit integrated w... | 09/18/2001 |
| 6272906 | Device for separating and for measuring the volume of the various phases of a mixture of fluids The invention is a device for separating a mixture of fluids (conducting fluid, non-conducting fluid, gas), suited to measure the volumes of the various fluids by means of a capacitive measuring process. The invention comprises a unit (WOS) for separating... | 08/14/2001 |
| 6245224 | Water quality management system A water quality management system for managing the water quality in a water supply network having water pipe lines running from the purification plant to consumers' faucets to maintain the water quality at the consumers at the terminals of the network at ... | 06/12/2001 |
| 6223822 | Downhole sampling tool and method A sampling device for use downhole is provided comprising a hollow body (24) having a fluid inlet port (26) for fluid entry to the interior thereof, characterised by a gas extraction system (64) associated with the hollow body (24) and capable of securing... | 05/01/2001 |
| 6212943 | Method and apparatus for the sonic measurement of sludge and clarity conditions during the treatment on waste water A sludge blanket level is determined in a waste water treatment clarifier using sonic pulse reflections. Additionally, using similar techniques, the clarity of the waste water is determined. A sonic pulse is directed into the waste water. Echos are genera... | 04/10/2001 |
| 6062070 | Method and apparatus for the sonic measurement of sludge and clarity conditions during the treatment of waste water A sludge blanket level is determined in a waste water treatment clarifier using sonic pulse reflections. Additionally, using similar techniques, the clarity of the waste water is determined. A sonic pulse is directed into the waste water. Echos are genera... | 05/16/2000 |
| 5821564 | TFT with self-align offset gate A PMOS thin film transistor (TFT) with self-align offset region for SRAM application is described. A source and a drain regions are above the gate region. A channel region is formed offset from the gate. An offset region is formed in the channel region ha... | 10/13/1998 |
| 5698775 | Device for locating the position of the separation between two mediums, and a receptacle and a detection process employing the device A device locating a position of transition between respective layers of first and second fluids, the device comprising: proximal and distal ends, an immersible signal emitter positioned at the distal end, an immersible signal receptor also fixed at the di... | 12/16/1997 |
| 5659130 | Simple device for testing chemical permeation A simple test device for protection against chemical permeation is disclosed. It includes a test chamber, a solvent sample cup, upper and lower fixing plates, upper and lower gaskets, an air filtering apparatus, a gas diffusing pan and a number of screws.... | 08/19/1997 |
| 5542289 | Apparatus and method for the study of liquid-liquid interfacial rheology The apparatus and method of the present invention relate to a novel procedure for measuring the interfacial thinning that occurs during a droplet-liquid phase coalescence event. As an example, an aqueous drop is grown at the tip of a capillary submerged i... | 08/06/1996 |
| 5537859 | Method of determining the amount of the fluid content with a smaller specific gravity in airtightly sealed flexible containers on a continuous basis A method determines the amount of the fluid content with a smaller specific gravity in an airtightly sealed flexible container containing contents with different specific gravities that are automatically separated from each other when held to a stationary... | 07/23/1996 |
| 5457986 | Process for evaluating solute retention characteristics of membranes A process is provided for rapidly and non-destructively evaluating the solute retention characteristics of porous membranes using a novel liquid-porosimetric technique. A ratio of two membrane permeabilities is measured at preselected operating conditions... | 10/17/1995 |
| 5412979 | Method and apparatus for dissolution testing of a dosage form An apparatus and method determines the dissolution of a drug from a dosage form, most particularly a swellable dosage form. An inert, transparent cylindrical vessel having a hemispherical bottom contains a fluid medium. The dosage form is placed into the ... | 05/09/1995 |
| 5301539 | Method for improving enhanced recovery of oil using surfactant-stabilized foams A process is provided for enhancing the recovery of oil in a subterranean formation. The process involves injecting a surfactant-containing foam having oil-imbibing and transporting properties. A foam having such properties is selected either by determina... | 04/12/1994 |
| 5090238 | Oil well production testing Oil well production fluid is gravitationally segregated into different phase within a tank whose top has a regulated exhaust line to remove any gas phase. An outlet end of the tank has a water phase discharge line from a lower region and an emulsion phase... | 02/25/1992 |
| 5069065 | Method for measuring wettability of porous rock A core sample of a porous rock having a wettability representative of a subterranean formation is saturated with a first medium. This first medium is then displaced with an immiscible second medium. Capillary pressure versus wetting phase saturation is me... | 12/03/1991 |
| 4985696 | Electronic controller by resistivity of water-oil interface An electronic interface controller is disclosed. The controller is particularly suited for use in controlling dehydration processes of light, heavy and extra heavy crude oils on the basis of the interface between the oil and water. The controller includes... | 01/15/1991 |
| 4972701 | Osmotic method for determining the molecular weight of solutes in solution with a solvent There is disclosed apparatus and method for determining molecular weight by osmometry. A fluid circuit is used having two pressure measurement zones, one responsive only to viscosity effects and the other to both viscosity and osmotic effects. The osmotic... | 11/27/1990 |
| 4740077 | Centrifugal measurement of core samples An adaptable, accurate, high resolution centrifuge core measuring method using a single strobe flash per measurement uses a microprocessor controller to control the measuring method, not a computer. The controller, not the camera clock, decides when the c... | 04/26/1988 |
| 4700580 | Aviation fuel tester A clear plastic device for the sampling of aviation fuel to allow visual inspection for contaminants that may be contained therein. The hand-held device operates in a "groove" mode or a "prong" mode for different fuel tank quick-release valves. A float in... | 10/20/1987 |
| 4658637 | Cell for analyzing a fluid which is condensable, at least in part A cell (4) for analyzing a fluid which is condensable, at least in part. The cell comprises a volume (16, 17, 18) in which the fluid is inserted. The volume is delimited firstly by an envelope (11, 12, 13) and secondly by an upper piston (14) capable of s... | 04/21/1987 |
| 4565088 | Process and apparatus for the detection of changes of composition in a medium with the aid of ultrasound Process and apparatus for detecting and locating a change of composition in a medium, which consists in determining the speed of transmission of an ultrasonic wave through a layer or column of the medium; this determination is effected at a plurality of l... | 01/21/1986 |
| 4287756 | Stratified fluid interface recorder A device for determining the relative properties of stratified fluids, such as the interface between oil and water having plural fluid character recording stations with sensors on an elongated member. Means are provided to clear the recording stations to ... | 09/08/1981 |
| 4250741 | Precision spinning drop interfacial tensiometer An improved instrument for the precise measurement of interfacial tension between two fluid phases by means of a drop of the less dense fluid surrounded by the more dense fluid, both fluids spinning together in gyrostatic equilibrium. Elements of the inve... | 02/17/1981 |
| 4237724 | Detection of batch interfaces in pipelines Interfaces are detected in pipeline batching by means of a capacitance cell for determining dielectric constants. The batch fluid may be purified by a centrifugal filter to allow identification of the batch fluid by dielectric constant.... | 12/09/1980 |
| 4184363 | Method of and apparatus for measuring the thickness of one liquid overlying another A method of and an apparatus for measuring the thickness of one liquid layer, e.g. oil, overlying another liquid in which a conical body is lowered into the liquids until the upper layer surface reaches the neck of the cone and a sensor detects the interf... | 01/22/1980 |
| 4137755 | Material layer volume determination A technique for generally determining the volume of a layer of a constituent material in a centrifugally separated mixture of material. A centrifuge tube is used to hold the material mixture and an appropriately shaped body is disposed in the tube in the ... | 02/06/1979 |
