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| Number | Title | Issue Date |
| 7665347 | Liquid state detecting apparatus A liquid state detecting apparatus including a detecting element which outputs a signal associated with a concentration of a particular component of a liquid contained in a liquid container; an abnormality determination unit which determines whether or not the liqui... | 02/23/2010 |
| 7658093 | Liquid discriminating apparatus and liquid discriminating method A concentration sensor for detecting a concentration of a liquid reducing agent through heat transfer characteristics between separate two points is provided in a storage tank for storing a liquid supplied to an NOx reduction catalyst. When the concentrat... | 02/09/2010 |
| 7574900 | Liquid state detection sensor A liquid state detection sensor in which temperature information of a urea aqueous solution is obtained on the basis of a voltage value acquired after the start of energization of a heating resistor corresponding to a resistance value of the heating resistor (S1 | 08/18/2009 |
| 7469574 | Liquid type identifying method and liquid type identifying device A liquid type identifying method and device for correctly and quickly determining whether or not a liquid is a predetermined one. An identifying sensor unit (2) so disposed as to face a flow passage (24) of a liquid to be measured has an indirect-heati... | 12/30/2008 |
| 7423536 | Heat sensor activated detector and method A heat sensor activated detector having a housing, which accommodates a heat sensor, a logic device that compares the heat signal read by the heat sensor to a predetermined level and transmits an enable signal to an audible signal generator where the heat signal is ... | 09/09/2008 |
| 7398677 | Process and equipment for determining the alcoholic strength of a water/alcohol solution The process comprises the operations of: effecting heating of a predetermined quantity of water/alcohol solution until it partly or completely evaporates, detecting the change in its temperature over time during heating and evaporation of the said quantity of soluti... | 07/15/2008 |
| 7377185 | Device and method of detecting flow rate/liquid kind, and device and method of detecting liquid kind A flow rate/liquid type detecting method for detecting the flow rate of a fluid and, at the same time, detecting any one of or both the type of the fluid and the concentration of the fluid, characterized in that: by using a flow rate/liquid type detecting apparatus ... | 05/27/2008 |
| 7367711 | Type identification system for diesel oil and method for identifying type of diesel oil Apparatus and method for identifying type and distillation properties of light oil. A pulse voltage is applied for a predetermined period of time to a liquid type identification sensor heater comprising a heater and an identification liquid temperature sensor provid... | 05/06/2008 |
| 7354768 | Volume-differential assay using hydrophilic gel Systems and methods for measuring the moisture and sediment content of a petroleum sample. In one embodiment, a sample to be tested is collected in a field bottle. The sample from the field bottle is then transferred from the field bottle, and into and through a mea... | 04/08/2008 |
| 7257985 | Apparatus and method for real time determination of density and related parameters in manufacturing processes Methods and apparati for measuring entrained gas content. One of the disclosed apparatus embodiments includes a chamber and piping for process fluid, the piping including two different sectors each comprising a density and temperature gauge having a pressure gauge l... | 08/21/2007 |
| 7222524 | Method and apparatus for determining an optimal pumping rate based on a downhole dew point pressure determination The present invention provides a down hole spectrometer for determination of dew point pressure to determine an associated optimal pumping rate during sampling to avoid precipitation of asphaltenes in a formation sample. A sample is captured at formation pressure in... | 05/29/2007 |
| 7216533 | Methods for using a formation tester A method of testing a downhole formation using a formation tester on a drill string. The formation tester is disposed downhole on a drill string and a formation test is performed by forming a seal between a formation probe assembly and the formation. A drawdown pist... | 05/15/2007 |
| 7168300 | Gasoline identification system and method for identifying gasoline type The types of gasolines having different distillation characteristics and various compositions are identified accurately and rapidly. A pulse voltage is applied for a predetermined time to a liquid type identifying sensor heater including a heater and an identifying ... | 01/30/2007 |
| 7152582 | Gasoline type identifying system and method for identifying gasoline type The types of gasolines having different distillation characteristics and various compositions are identified accurately and rapidly. A pulse voltage is applied for a predetermined time to a liquid type identifying sensor heater including a heater and an identifying ... | 12/26/2006 |
| 7080556 | Ultrasonic apparatus and methods for the monitoring of melting, mixing and chemical reaction processes Ultrasonic apparatus and associated methods for the in-line monitoring of melting, mixing and chemical reaction processes of materials inside an enclosed chamber having rotating elements associated therewith are presented. The chamber may be heated and the rotating ... | 07/25/2006 |
| 7036356 | Method and apparatus for defining water content of a liquid The invention relates to a method and apparatus for measurement of total water content in a liquid. According to the method, the relative water content (aw) of the liquid is measured in a first measurement step at a first temperature (T1). According to th... | 05/02/2006 |
| 7017388 | Determination of gas-free densities and relative amounts of gases in liquids in manufacturing processes Improved control of continuous processes that handle liquids. Data generated by this invention is used to control gas contents of liquids within optimum ranges, for instance in paper coating processes and in the manufacture of food products (ketchup), personal care ... | 03/28/2006 |
| 6957013 | Fluid heater A fluid heater having a first heat exchanger block with a fluid heating tube encased therein, and having a first surface, a second heat exchanger block with a fluid heating tube encased therein and having a second surface adjacent to the first surface. A cavity is f... | 10/18/2005 |
| 6950750 | Method of estimating the gas/oil ratio (GOR) in the fluids of a well during drilling A method of evaluating the volume ratio of gas to oil (GOR) in the fluids of a well during drilling by direct or indirect measurement of the volumes of gas and oil in the cuttings. The method includes determining the volume of gas (Vg) contained in the drilling flui... | 09/27/2005 |
| 6776029 | Oil content measuring device and refrigeration system using the same An oil content measuring device measures the oil content of a refrigerant in a supercritical or a vapor phase state. A refrigeration system uses the oil content measuring device. The oil content measuring device has an electrostatic capacity measuring device for mea... | 08/17/2004 |
| 6739178 | Sensor probe for measuring temperature and liquid volumetric fraction of a liquid droplet laden hot gas and method of using same A sensor probe and method of use for determining the temperature, velocity, and/or liquid volumetric fraction of gas laden with droplets. In one variation, the probe includes a single heating element used in a well-characterized flow. The heating element is maintain... | 05/25/2004 |
| 6737274 | Comparator for time-temperature indicator A comparator for use with a time-temperature indicator wherein the time-temperature indicator includes an active portion having an initial color and which undergoes chemical changes as time elapses and at a rate related to the temperature of the surrounding environm... | 05/18/2004 |
| 6732568 | Sensor probe for measuring temperature and liquid volumetric fraction of a liquid droplet laden hot gas and method of using same A sensor probe and method of use for determining the temperature, velocity, and/or liquid volumetric fraction of gas laden with droplets. In one variation, the probe includes a single heating element used in a well-characterized flow. The heating element is maintain... | 05/11/2004 |
| 6691562 | Test for brake fluid age and condition A correlation is derived between a variable, defined as "virtual age," indicative of brake fluid's service age and/or mileage and the concentration of copper in the fluid. Virtual age is utilized to estimate the degree of degradation of the fluid. A react... | 02/17/2004 |
| 6651487 | Test for brake fluid age and condition A reactive test strip having a pre-exposure color is used to measure and indicate the concentration of copper ions in brake fluid in terms of a readily visible color change. The strip is immersed in the fluid within a brake fluid container and any resulti... | 11/25/2003 |
| 6588253 | Fuel volatitlity sensor and method based on capacitance measurement A method and apparatus for determining a volatility of a fuel sample. A fuel sample is collected in a container and heated for a time period using a heater device. Periodically during the heating, the capacitance of the fuel sample and the temperature of ... | 07/08/2003 |
| 6571607 | Fluid leak detection via thermal sensing Fluid leak detection through thermal sensing is disclosed. A sensor includes one or more flexible, thermally conductive, fluid isolating layers, and a thermally sensitive detector situated within the flexible, thermally conductive, fluid isolating layers.... | 06/03/2003 |
| 6509553 | Method and apparatus for providing an indication of the composition of a fluid particularly useful in heat pumps and vaporizers A method and apparatus for providing an indication of the composition of an examined fluid by using an electrical resistor, particularly a positive temperature coefficient thermistor, for measuring the thermal conductivity of the examined fluid with the k... | 01/21/2003 |
| 6350426 | Method of determining component concentrations in three-component mixture and method of continuous production of hydrogen fluoride using the method A method of quickly and safely determining the component concentrations of a three-component mixture comprising substantially sulfuric acid, hydrogen fluoride and water, which comprises measuring at least one set of three physical quantities of (1) temper... | 02/26/2002 |
| 6009747 | Method for evaluating drilling fluids A method for evaluating drilling fluids to be used with clay-rich rocks such as shales which comprises collecting shales so as to preserve the downhole hydration condition and then submitting such preserved shale to Thermo-Gravimetric Analysis, so as to o... | 01/04/2000 |
| 5874667 | Block-type heater assembly for isothermally heating samples with observation access A block-type heater assembly for use in melting point/boiling point determination apparatus or other applications in which it is desirable to provide a substantially isothermal region for samples under test as well as a temperature sensor while also provi... | 02/23/1999 |
| 5773709 | Method and apparatus for thermally inducing circulation of fluid between the interior of a system and a fluid pocket attached thereto A method and apparatus for inducing circulation of a fluid in an interior of a system between such interior and a fluid pocket. The fluid pocket is connected to a fluid access opening of the system for fluid communication between the fluid pocket and the ... | 06/30/1998 |
| 5756884 | Device for determining characteristics of petroleum fluid samples for example on a production site A rigid body comprising two cylindrical chambers (14, 15) with a pointed bottom for example, connected to each other by a fine line controlled by a valve V5, is fixed in a thermostat-controlled enclosure (7). Two rods (18, 17) forming pistons, provided wi... | 05/26/1998 |
| 5635631 | Determining fluid properties from pressure, volume and temperature measurements made by electric wireline formation testing tools A method of determining an amount of dissolved gas in a fluid sample is disclosed. The method includes hydraulically confining and expanding the sample while measuring pressure and volume. A first volume and pressure are determined at which the rate of ch... | 06/03/1997 |
| 5631413 | Fluid holdup tool and flow meter for deviated wells A production logging tool is provided for use within a well to directly measure a velocity profile of a multiphase fluid flow within a cross-section of a well. The production logging tool includes a tool housing from which a plurality of arms are radially... | 05/20/1997 |
| 5563337 | Moisture monitor apparatus for a fluid system A moisture monitor apparatus for a fluid system. The apparatus includes a heater in fluid communication with the fluid system to heat the fluid in the fluid system. A microphone transmits sounds produced as the moisture vaporizes from heating and converts... | 10/08/1996 |
| 5531112 | Fluid holdup tool for deviated wells A production logging tool is provided for use within a well to determine fluid holdup of a multiphase fluid flow within the well. The production logging tool includes a plurality of sensors secured within a plurality of arms which radially extend from a t... | 07/02/1996 |
| 5518933 | Method of analyzing washings for free acids and ions A method of determining the concentrations of at least two of plural kinds of known free acids and ions contained in a solution, wherein these known free acids and ions are known beforehand to be different from each other in temperature changes and conduc... | 05/21/1996 |
| 5454257 | Method of determining wax appearance point of a complex real fluid crude liquid petroleum composition and of determining quantity of wax precipitated therefrom A wax appearance point in a petroleum produce is determined by measuring change in volume as a function of temperature. The appearance point appears as a deviation from a rectilinear graph. The quantity of wax which appears is determined by comparing a me... | 10/03/1995 |
| 5433105 | Method and device for analyzing moisture content in oil A method for analyzing the moisture content of an oil includes the steps of providing an enclosed chamber sealed in a gas-tight fashion, placing the oil to be analyzed within the enclosed chamber, heating the enclosed chamber for causing the moisture in t... | 07/18/1995 |
