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| Number | Title | Issue Date |
| 7836756 | Fuel composition sensing systems and methods using EMF wave propagation A flex fuel sensor is deployed in conjunction with the fuel transfer line (e.g. around a plastic fuel line) or at the bottom/side of a fuel tank. An RF signal of a constant frequency may be generated across a resonant circuit, which comprises of an inductor and a PC... | 11/23/2010 |
| 7631543 | Method and apparatus for measuring the composition and water salinity of a multiphase mixture containing water A method for determining the composition and water salinity of a multi-component mixture of a gas and at least one liquid, including water, in a pipe (1), the method comprising the following steps: a. electromagnetic phase measurements are performed between t... | 12/15/2009 |
| 7409853 | Floatable housing for in situ water monitoring system An electronic system for use in a body of fluid is disclosed. The electronic system includes a first housing element and a second housing element. The second housing element is hermetically sealed to the first housing element, forming a first chamber there between. ... | 08/12/2008 |
| 7377151 | Fuel tester A fuel tester is provided, which may be used to test for the presence of a contaminant such as water in a sample of fuel. In one embodiment, the fuel tester is a tube with a receiving end configured to attach to a sample container. The sample container holds a sampl... | 05/27/2008 |
| 7353696 | Apparatus for measuring methanol concentration An apparatus for measuring a methanol concentration is provided. The apparatus is located in a pipe which supplies liquid fuel to the anode of a direct liquid feed fuel cell, and may include a vertical supporting beam located in the pipe; a horizontal plate located ... | 04/08/2008 |
| 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 |
| 7135870 | Device for determining the composition of a fluid mixture A method and apparatus are disclosed for determining the concentration of individual components within a fluid mixture by determining the permittivity of the individual components. The method and apparatus use a reference sensor and at least one measurement sensor p... | 11/14/2006 |
| 7125478 | Microscale electrophoresis devices for biomolecule separation and detection The present invention relates to microfabrication and utilization of microscale electrophoresis devices as well as the separation and detection of biomolecules in microscale electrophoresis devices. The device of the present invention utilizes novel fabrication and ... | 10/24/2006 |
| 7086280 | Aeration sensing device A system for detecting aeration in a lubricant includes a sensor having a pair of spaced apart concentric rings forming a first capacitor through which the lubricant flows and a capacitor segment forming a second capacitor with the outer ring. The capacitors are con... | 08/08/2006 |
| 7064562 | Temperature compensation method for soot sensor Certain characteristics of Diesel engine lubrication oil are determined. A sensor formed as a capacitor is immersed in the oil. An inductor is in series with the sensor, and a high frequency voltage with a varying frequency is applied to the resonance circuit formed... | 06/20/2006 |
| 6975124 | Multipoint nanoprobe A nanoprobe includes a substrate having a layer, which forms a projected portion. A plurality of conductive lines is adhered to the projected portion and the lines extend beyond an end of the projected portion by a distance to form contact points, wherein the lines ... | 12/13/2005 |
| 6823721 | Method and system for mass flow balance accounting A system which receives as inputs various measurements of solids and liquids in a clarification system and, from these measurements, determines the various constituents and their fractional makeup within the system. The measurements may be made manually or mechanica... | 11/30/2004 |
| 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 |
| 6718819 | Oil quality sensor system, method and apparatus An apparatus for determining the condition of engine lubricating oil includes a sensor having a plurality of spaced apart electrode pairs on a nonconductive polymer film. The sensor is operatively associated with an oil filter, which provides retro-fit capability an... | 04/13/2004 |
| 6690180 | Process and apparatus for determining ratio of fluid components such as methanol and water for reforming feed A method and sensor for determining the ratio of two components in a fluid mixture comprising a test cell in open communication with the fluid mixture and a reference cell containing a desired fluid mixture not in contact with the fluid mixture being test... | 02/10/2004 |
| 6499337 | Monitoring of particulate matter in water supply An in-line monitoring apparatus for monitoring particulate matter in a liquid stream includes an inlet and outlet for ingress and discharge of a liquid stream. An in-line particulate matter-sampling unit is arranged for accumulation of particulate matter ... | 12/31/2002 |
| 6497140 | Cavitation sensor A cavitation sensor includes an ultrasonically absorbent coating (20) disposed around a piezoelectric element (30) and a conduit (25). The conduit (25) includes a boundary delimited by the piezoelectric element (30), while the ultrasonically absorbent coa... | 12/24/2002 |
| 6452500 | Hydrocarbon sensing apparatus An apparatus for monitoring presence of hydrocarbon-based fluid is disclosed. It includes a body and a sensing cable mounted on the body in a wave-like shape, thus forming a plurality of sensing sections for detecting a layer of hydrocarbon on water. When... | 09/17/2002 |
| 6408684 | Detection device for apparatus for analysis A detection device for an apparatus for carrying out analysis such as a chromatograph includes not only a detector for outputting detection signals but also a stabilization judging unit for measuring drift and noise of these detection signals over time an... | 06/25/2002 |
| 6305212 | Method and apparatus for real time gas analysis A method and apparatus for real time gas analysis involving determining individual concentrations of fluid constituents in a mixture of known constituents by measuring properties of the mixture and solving a set of equations, which relate the individual g... | 10/23/2001 |
| 6199603 | Compounding assembly for nutritional fluids A mixing assembly which transfers a number of nutritional fluids from individual source containers into a collection container while noninvasively sensing the type of fluid being transferred is provided. The mixing assembly utilizes a transfer set to esta... | 03/13/2001 |
| 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 |
| 5927349 | Compounding assembly for nutritional fluids An mixing assembly which transfers a number of nutritional fluids from individual source containers into a collection container while noninvasively sensing the type of fluid being transferred is provided. The mixing assembly utilizes a transfer set to est... | 07/27/1999 |
| 5832773 | Method for determining presence of water A sensor can detect the difference in potential between itself and the fluid into which it is immersed, a signal generated by the probe representing this difference in potential. This signal is used to activate an oscillator circuit. By varying the condit... | 11/10/1998 |
| 5627309 | Method for determining presence of water A sensor can detect the difference in potential between itself and the fluid into which it is immersed, a signal generated by the probe representing this difference in potential. This signal is used to activate an oscillator circuit. By varying the condit... | 05/06/1997 |
| 5597734 | Ion chromatography using frequent regeneration of batch-type suppressor An ion chromatography method for analysis of a plurality of analyte ions in a sequence of samples in which ion chromatography is performed on a sample, which is passed to a non-precipitating suppressor ion exchange resin and analyzed, the suppressor being... | 01/28/1997 |
| 5594163 | Fuel mixing ratio detecting device A fuel mixing ratio detecting device can detect a fuel mixing ratio of a mixed fuel with high precision, regardless of the value of an electric conductivity of the fuel. The device comprises a sensor portion (an LC resonance circuit) having an electrostat... | 01/14/1997 |
| 5591901 | Fluid sensor A sensor can detect the difference in potential between itself and the fluid into which it is immersed, a signal generated by the probe representing this difference in potential. This signal is used to activate an oscillator circuit. By varying the condit... | 01/07/1997 |
| 5574214 | Apparatus for drying dielectric oil Apparatus for removing water from a dielectric oil includes first and second spaced-apart electrically conductive walls, a bed of molecular sieves between the first and second walls, and a device for measuring the capacitance across the bed of molecular s... | 11/12/1996 |
| 5477468 | Concentration analyzer The concentration analyzer of the present invention is used to determine the cross-sectional concentration at multiple locations within a fluid line, such as an artery or vein, of dissolved substances within a moving fluid flowing through the vein which f... | 12/19/1995 |
| 5468452 | Quantitative analysis combining high performance liquid chromatograph and mass spectrometer A quantitative analyzing apparatus including a high-performance liquid chromatograph, a mass spectrometer, and an atmospheric pressure chemical ionization interface for linking the liquid chromatograph to the mass spectrometer to each other, wherein the i... | 11/21/1995 |
| 5399256 | Electrochemical detector cell An electrochemical detector cell includes a first block having a planar first working surface, and a first working electrode embedded in the first block member. The first working electrode includes analyte contacting surface disposed co-planarly with the ... | 03/21/1995 |
| 5359905 | Fuel checker for use with pet cock or ball and spring drain valves A hand-manipulative apparatus is disclosed for receiving a specimen of the fuel tank contents of a fuel tank. The apparatus comprises an elongated body of substantially circular cross-section. The body is fabricated of transparent molded material and is o... | 11/01/1994 |
| 5264368 | Hydrocarbon leak sensor Method and apparatus for detecting and/or monitoring the presence of hydrocarbons in a fluid medium at a remote location, by sensing the presence of hydrocarbon-based fluid in the fluid medium in the remote location, generating a signal indicative of the ... | 11/23/1993 |
| 5253674 | Coolant corrosiveness indicator A fluid sensor for heat exchanger system includes a supporting device such as a tubular hose fitting for mounting the sensor in the system so that heat exchanging fluid circulated in the system comes into contact with the sensor. A window or sight glass i... | 10/19/1993 |
| 5249455 | B S & W measuring means and method A water cut meter includes a test cell through which a petroleum stream will flow. The test cell includes an outer shell, a sensor probe which cooperates with the outer shell to form a sensor capacitor with the flow of the petroleum stream as the dielectr... | 10/05/1993 |
| 5225783 | Dielectric constant detection apparatus for fuel A detection apparatus for detecting a dielectric constant of fuel having an electrode disposed in a fuel passage and applied with an excitation signal, a monolayer-wound coil disposed in the vicinity of the electrode so that fuel is introduced in a space ... | 07/06/1993 |
| 5205151 | Alcohol concentration sensor testing apparatus An apparatus for testing an alcohol concentration sensor used in measuring an alcohol concentration of a fluid containing alcohol. The alcohol concentration sensor includes a capacitive probe having a capacity dependent upon the alcohol concentration of t... | 04/27/1993 |
| 5182942 | Process and apparatus for utilization of fuels with alcohol additives for an internal combustion engine Process and apparatus for utilization of fuels with alcohol additives for an internal combustion engine in which during the heating of a sample quantity of a fuel mixture of a conventional fuel and alcohol there is a delay in the temperature increase in t... | 02/02/1993 |
| 5181536 | Coolant corrosiveness indicator A fluid sensor for heat exchanger system includes a supporting device such as a tubular hose fitting for mounting the sensor in the system so that heat exchanging fluid circulated in the system comes into contact with the sensor. A window or sight glass i... | 01/26/1993 |
