Famous Patents
British merchant Peter Durand invented the tin can in 1810.
PatentStorm News
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
| Number | Title | Issue Date |
| 7169273 | Enzyme electrode Disclosed is an enzyme electrode comprising an electrode system comprising an insulating substrate having formed thereon a working electrode, a counter electrode and optionally a reference electrode, and a reaction layer formed on the electrode system, wherein the r... | 01/30/2007 |
| 7150284 | Device for monitoring a wash process A device is provided for monitoring a wash process inside a mechanical washing apparatus, comprising sensor means for measuring physical and/or mechanical parameters of the wash process and recording means for recording the measured parameters within the device. Thi... | 12/19/2006 |
| 7129717 | Systems and methods for measuring tear film osmolarity An osmolarity measuring system is configured to receive a contact lens in a measurement chamber. The measurement chamber includes a volume of fluid, and a series of electrodes are configured to measure the electrical properties of the fluid. A processing device corr... | 10/31/2006 |
| 7078910 | Fluid formulation evaluation and improvement utilizing broad spectrum impedance spectroscopy A method and apparatus for evaluating and improving the properties of fluid formulations is disclosed. The inventive concept employs impedance spectroscopy (IS) measurements and data analyses to determine IS parameters of fluids representative of a fluid formulation... | 07/18/2006 |
| 7068054 | Real-time carbon sensor for measuring concentration profiles in carburized steel An alloy solute sensor probe, measurement system and measurement method are disclosed for directly measuring solute concentration profiles in conductive material components at elevated processing temperatures. The disclosed device and method permit direct, real-time... | 06/27/2006 |
| 6965240 | Apparatus and methods for analyzing particles using light-scattering sensors and ionization sensors Apparatus and methods are disclosed for analyzing particles, such as coarse particulates, fine particulates (e.g., diesel particulate matter), and combustion aerosols, using light-scattering sensors and/or ionization-type sensors. In one disclosed embodiment, a part... | 11/15/2005 |
| 6930486 | Conductivity sensor A conductivity probe having a modular design. A probe body has a distal end and a proximal end. The distal end includes a recessed portion for providing a seat for an O-ring that seals an electrode tip assembly. The probe body also includes a set of internal threads... | 08/16/2005 |
| 6922064 | Fluid quality test method based on impedance A system for determining a quality of a fluid includes an impedance cell immersed in the fluid and impedance instrumentation that communicates with the impedance cell. A controller measures a first impedance of the fluid using an electrical signal at a first frequen... | 07/26/2005 |
| 6811663 | Microelectrode system A microelectrode system suitable for use in preparative and analytical chemistry having a laminated structure with one or more apertures. In one embodiment a microelectrode system (1) comprises alternating layers of conductor (3) and dielectric (or ins... | 11/02/2004 |
| 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 |
| 6614242 | Method and device for oil-in-water measurement A method and a sensor (1) for oil-in-water measurement, in particular for the oil industry. In an electric measuring cell (7, 12) a capacitance is measured as a measure of an oil concentration in the water flowing through or in the accumulation filter (16... | 09/02/2003 |
| 6577134 | Sensor and sensor system for liquid conductivity, temperature and depth Liquid conductivity and temperature are measured in respective sensitivity fields that are collocated--i. e., in volumes that nearly match by mathematical, geometrical, or functional criteria. Collocation is as distinct from mere adjacency or proximity; a... | 06/10/2003 |
| 6478948 | Method of monitoring and controlling corrosion of furnace boiler tubes A method for monitoring and reducing corrosion in furnace boiler tubes measures electrochemical noise associated with corrosion mechanisms while corrosion is occurring at the surface of the tubes as they are exposed to combustion products. This noise is d... | 11/12/2002 |
| 6400159 | Orientation sensor especially suitable for use in an underground boring device An orientation sensor especially suitable for use in an underground device is disclosed herein. This orientation sensor includes a sensor housing defining a closed internal chamber, an arrangement of electrically conductive members in a predetermined posi... | 06/04/2002 |
| 6147504 | Rod-shaped capacitive probe having sheet-like electrode A robust probe (1) which can be installed simply and without special tools and can be produced at low cost is provided, said probe having an essentially rod-shaped probe housing (2), which has an axial, conical interior space, and a clamping cone (10), wh... | 11/14/2000 |
| 5589482 | Benzo-thiophene estrogen agonists to treat prostatic hyperplasia Benzothiophenes and related compounds of the formula ##STR1## are estrogen agonists which are useful for treating prostatic and diseases, obesity and bone loss in male animals.... | 12/31/1996 |
| 5510702 | Method and apparatus for simultaneous measuring the streaming potential of a fiber suspension and a filtrate thereof A method and apparatus for simultaneously measuring the streaming potential of a fiber suspension and a filtrate thereof. A container is provided having an inlet and an outlet for the flow of fiber suspension therethrough, and a filter screen divides the ... | 04/23/1996 |
| 5483166 | Electrochemical test cell for conductivity and transport measurements An electrochemical test cell for measuring conductivity and transport properties of a solid or liquid electrolyte comprises a longitudinal chamber, produced, e.g., from a syringe, a pair of electrodes and means for holding the electrodes which defines an ... | 01/09/1996 |
| 5444379 | Electric conductivity measuring cell An electric conductivity-measuring cell comprises a pressure container serving also as an outer electrode and provided with an inlet port of a liquid to be measured and an outlet port and an inner electrode provided within said pressure container so as to... | 08/22/1995 |
| 5391839 | Device for the electrically insulated attachment of a metallic probe electrode in the opening of a housing A device is proposed for the electrically insulated attachment of a metal probe electrode in the opening of a housing, preferably a measuring probe for measuring the filling status in the opening of a probe head housing. The device has a metal rod electro... | 02/21/1995 |
| 5363695 | Leak detection system and method for detecting and measuring liquid leaks A system and method for detecting leaks in a storage tank that includes a stored tank liquid and an immiscible test liquid, and there is an interface formed between the tank liquid and the test liquid. The system includes a transducer and electronic devic... | 11/15/1994 |
| 5286357 | Corrosion sensors A corrosion sensor (1), apparatus for detecting corrosion of a surface incorporating the sensor, a structural assembly (1,21) incorporating the sensor and method for detecting corrosion of a surface employing the sensor are provided. The sensor comprises ... | 02/15/1994 |
| 5272921 | Probe for monitoring liquid A probe for monitoring a liquid level has a one-piece insulation sheath extended within the probe casing and positioned far beyond the end of a contact pressure spring that is removed from the liquid. This contact pressure spring has an associated spring ... | 12/28/1993 |
| 5091152 | Apparatus for electrically destroying targeted organisms in fluids The invention pertains to a method and apparatus for destroying a predetermined living organism in fluid, whereby a predetermined current having a specific waveform and frequency is applied to the fluid in order to destroy the predetermined living organis... | 02/25/1992 |
| 5089780 | Oil quality monitor sensor and system A sensor and system for monitoring the accumulation of contaminants in oil wherein the contaminants have an electrical conductivity which is different from the oil. An electrochemical cell is used to measure the alternating current conductivity of the oil... | 02/18/1992 |
| 4894604 | Fluid capacitance sensing means and method A fluid capacitance sensor includes a device, receiving a stream of fluid, which converts the fluid flow to annular fluid flow. A capacitance sensing network has an internal capacitance substantially greater than the capacitance of the fluid. The capacita... | 01/16/1990 |
| 4887023 | Capacitive sensor and circuit for detecting contamination of guard electrode An apparatus for detecting contamination of a capacitive sensor, comprising a guard electrode surrounding a portion of the sensor, and a circuit for supplying an excitation signal to the sensor and an identical excitation signal to the guard electrode. Th... | 12/12/1989 |
| 4808931 | Conductivity probe A four-electrode open-cell conductivity sensor for measuring the conductivity of ocean water. A simplified version of the conductivity sensor may be used as a standard conductivity cell for measurement of fluid conductivity in a laboratory, or for monitor... | 02/28/1989 |
| 4767995 | Conductivity cell with adjustable concentric electrodes A conductivity cell is presented having a solid inner electrode and a hollow electrode whereby the inner electrode is adjustably mounted. The adjustable feature allows the cell to be accurately calibrated for various fluids having a wide range of conducti... | 08/30/1988 |
| 4707378 | Method and apparatus for controlling the organic contamination level in an electroless plating bath An electroless plating bath is selectively cleaned of organic contaminants. The organic contaminants are detected by measuring the capacitance between a working electrode and counter electrode with a potentiostat. The capacitance measurements are used to ... | 11/17/1987 |
| 4691169 | Electrode assembly especially adapted to utilizing a magnetic field for measuring electric conductivity of treated non-polar liquids A unique electrode assembly primarily designed to pass an induced current through a liquid phase by transfer of molecules adsorbed on sub-micron charged particles from cathode to anode to enable conductance determinations on non-polar liquids, for example... | 09/01/1987 |
| 4634982 | Capacitive measuring element for oscillometric measurement of conductance of streaming solutions and method of determining the dimensions thereof The invention relates to a capacitive measuring element intended for continuous measurements of conductance in streaming solutions. The essence of the measuring element is that in the measuring space the surfaces limiting it are covered by an electrically... | 01/06/1987 |
| 4507521 | High pressure electrical conductivity probe A high pressure electrical conductivity probe generally used as a liquid level indicator having a high pressure mechanical seal between an insulator and a metal mounting body and an electrode connector. The high pressure mechanical seal is effected using ... | 03/26/1985 |
| 4455531 | Conductance probe for detection of immiscible liquids This application teaches a probe for detecting immiscible components in an aqueous system, particularly pollutants that contaminate ponds, rivers and aquifers. The probe includes a casing having an open bottom and electrical terminals adjacent the open bo... | 06/19/1984 |
| 4392110 | Methods and apparatus for monitoring the condition of dielectric liquid in electric discharge machining Methods and apparatus for monitoring the condition of dielectric fluid used in EDM are described. A continuous sample of dielectric liquid is withdrawn from a tank containing the EDM electrode and workpiece and is passed between electrodes of a capacitanc... | 07/05/1983 |
| 4388043 | Conductivity dependent pump and process control Device for activating or inactivating a liquid pump on the basis of the electrical conductivity of a liquid. Device comprises, in combination, a housing having a passageway through which a liquid can flow, a pair of conductivity-sensing electrodes dispose... | 06/14/1983 |
| 4301412 | Liquid conductivity measuring system and sample cards therefor A system for measuring a parameter of a liquid sample, such as the hematocrit and an approximation of hemoglobin for a blood sample. The system basically comprises a hand-held instrument and a disposable sample card. The instrument accepts the disposable ... | 11/17/1981 |
| 4227151 | Measurement and monitoring of the electrical conductivity of liquor samples A measuring cell for use in measuring and monitoring the electrical conductivity of a liquid. The cell comprises at least four concentric circular electrodes which are disposed in a flat or substantially flat surface. The concentric electrodes are mutuall... | 10/07/1980 |
| 4123701 | Disposable sample card having a well with electrodes for testing a liquid sample Disclosed are several embodiments of a disposable sample card for testing fluids such as blood and the like. A generally planar card contains a chamber, or well and supports two insulated electrodes which terminate in the region of the well. Various elect... | 10/31/1978 |
| 4072892 | Electrolytic measurement system with an inner post and an outer cylindrical shield fluid boundary An electrolytic measurement system incorporating a probe for the measurement of the conductivity of fluids such as sewage and other industrial effluents. The probe has a smooth surface to passage of the fluid with flush-mounted electrodes arranged seriall... | 02/07/1978 |