Class 324/447 - With movable or adjustable electrode

Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter including movement or adjustment of probe
No. of patents: 38
Last issue date: 04/22/2008

Number	Title	Issue Date
7361478	High-throughput screen for identifying selective persistent sodium channels channel blockers A method for identifying a selective persistent Na+ channel blocker by measuring the ability of the blocker to reduce or inhibit a persistent Na+ current to a greater degree than a transient Na+ current. Aspects of the present method...	04/22/2008
RE40209	Cell potential measurement apparatus having a plurality of microelectrodes A cell potential measurement apparatus, which uses a planar electrode enabling a multi-point simultaneous measurement of potential change arising from cell activities, is provided which can conduct measurements accurately and efficiently as well as can improve conve...	04/01/2008
7259575	Method for on-line fuel-dilution monitoring of engine lubricant A method for determining a fuel-dilution condition of a lubricant used in transportation and industrial equipment. The method uses apparatus that applies a high frequency and optionally a low frequency oscillating signal to electrodes immersed in the fluid and quant...	08/21/2007
7109729	Method for analysis of a working fluid using impedance spectroscopy An on-line method for determining the condition of low conductivity working fluids using alternating current, electro-impedance spectroscopy is provided by making measurements over a range of frequencies at temperatures at or above 50° C. ...	09/19/2006
7057400	Fluid conductivity measuring cell The invention relates to a fluid conductivity measuring cell having two cylindrical and coaxial electrodes mounted head-to-tail and axially overlapping on the same insulative body, the inner electrode, penetrating partly into the at least partly hollow outer electro...	06/06/2006
6991910	High-throughput screen for identifying channel blockers that selectively distinguish transient from persistent sodium channels A method for identifying a Na+ channel blocker, including providing a cell containing a Na+ channel, demonstrating both a transient and a persistent current. The cell includes a potassium (K+) channel and a Na/K ATPase (Na+	01/31/2006
6937002	Method of using an array of electrodes for high throughput development and testing of materials Methods and apparatus employ the use of arrays (301, 902) of two or more electronically-discrete electrodes (1, 2, 3 . . . ) to facilitate high-throughput preparation and testing of materials comprising two or more elements. High rates of deposition, s...	08/30/2005
6885960	Methods and devices for performing impedance spectroscopy A highly time resolved impedance spectroscopy that enhances the measurement of the dynamics of non-stationary systems with enhanced time resolution. The highly time resolved impedance spectroscopy includes an optimized, frequency rich a.c., or transient, voltage sig...	04/26/2005
6815488	Process for producing thermoplastic resin composition A process for producing a thermoplastic resin composition is disclosed and comprises melt-kneading a resin composition containing from 40 to 90 parts by weight of (A) a polyamide resin, from 5 to 50 parts by weight of (B) a polyphenylene ether resin, from 5 to 30 pa...	11/09/2004
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
6377057	Classification of biological agents according to the spectral density signature of evoked changes in cellular electric potential Biologically active compounds are classified according to their effect on ion channels, changes in membrane potential and ionic currents, and the frequency content of action potentials that the compound(s) evoke in excitable cells. The spectral density ch...	04/23/2002
6297025	Measurement of complete electrical waveforms of tissue or cells A method of observing a physical and chemical property of a tissue or cell by using an apparatus which comprises at least a cell culturing means, an environment conditioning means, an observing means and a comparing means, comprising the steps of (A) cult...	10/02/2001
6290827	Device for electrochemical measurement A measuring system with a measuring body (2) mounted on a rotatable shaft (1) and being provided with electrodes (16) for measuring electrical currents obtained through chemical reactions within an analyte solution. In the rotatable shaft is housed an ele...	09/18/2001
5981268	Hybrid biosensors The invention relates to an apparatus and method for monitoring cells and to a method for monitoring changes in cells upon addition of an analyte to the cell's environment, comprising a device which includes an array of microelectrodes disposed in a cell ...	11/09/1999
5777210	Oil quality sensor measuring bead volume Method and apparatus for determining deterioration of e.g. lubricating oil by measuring the contraction of a polymeric matrix (support) holding charged ionic groups. The support contracts due to oil quality degradation. The expansion/contraction is detect...	07/07/1998
5686829	Voltammetric method and apparatus During voltammetric analysis of liquids, the indicator electrode must be frequently changed in order to prevent memory effects and resultant changes to basic conditions during measurement. In order to be able to change the indicator electrodes simply, a p...	11/11/1997
5563067	Cell potential measurement apparatus having a plurality of microelectrodes A cell potential measurement apparatus, which uses a planar electrode enabling a multi-point simultaneous measurement of potential change arising from cell activities, is provided which can conduct measurements accurately and efficiently as well as can im...	10/08/1996
5489849	High accuracy calibration-free electrical parameter measurements using differential measurement with respect to immersion depth An apparatus and method for measuring electrical parameters of a medium such as electrical conductivity and dielectric constant between a pair of electrodes are disclosed. The medium can be a liquid, gas, powder, etc., and the electrodes can be coaxial me...	02/06/1996
5432086	Apparatus for the automatic monitoring of microorganism culture Impedance measurements from an array of cells containing microorganisms whose growth or multiplication are to be measured in terms of the impedance, utilizes electrodes which can be introduced into the cells and have contact pieces engageable by one or mo...	07/11/1995
5287060	In-tank conductivity sensor A conductivity sensor adapted for use in the conductimetric analysis of liquids includes a pair of conductivity electrodes incorporated into a conductivity cell assembly having a liquid flow control chamber, sensing chamber, and liquid exit chamber. Liqui...	02/15/1994
5134376	A solution specific conductivity meter and method for use A conductivity meter usable in solutions where the path of the electric lines of force between two electrodes is altered. In one embodiment, detachable guard rings alter the path length based upon their own conductivity. In another embodiment, the physica...	07/28/1992
5121062	Streaming current detector probe A streaming current detector has a reciprocating piston with a sensing region having a uniform clearance from the casing which is sufficiently large to avoid significant shearing of the particles in the fluid of the sample stream. A separate guiding regio...	06/09/1992
5121061	Phase correction for streaming current signal In a streaming current signal, a zero crossing circuit tracks the phase of the streaming current signal. A latch is clocked in response to the outputs of the zero crossing signal to compensate the piston direction signal for change of phase of the streami...	06/09/1992
5098563	Low pressure ion chromatograph for the analysis of cations A low pressure ion-chromatograph for the analysis of cations comprises eluent reservoirs, pump, sample injection valve, sampler, column, flow conductivity cell, electrical conductivity detector and recorder, wherein the pump is a low pressure electronic m...	03/24/1992
5025219	Apparatus and method continuous measurement of the electrical conductivity of liquid media in a dynamic cell An apparatus for providing a precise, continuous, and dynamic measurement of the electrical resistivity of a liquid medium. A dynamic measurement cell is provided with at least one conduit of electrically insulating material in which a conductive electrod...	06/18/1991
4825169	Ultrasonic streaming current detector A streaming current detector includes an optical shutter rotated by the shaft of the motor which reciprocates a piston between electrodes in a bore containing sample fluid. An electronic synchronous detector is controlled by the output of a light detector...	04/25/1989
4786379	Measuring current distribution in an alumina reduction cell A method and apparatus are disclosed for measuring the current distribution in an alumina reduction cell. The apparatus includes sensors attached to the anodes of the cell, a remote computer system for receiving and correlating data received from the sens...	11/22/1988
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
4763064	Device for measuring the electronic characteristics of solid materials A device for measuring the electronic characteristics of solid electrolytes or solid-state electrochemical cells under varying conditions is provided. The device consists of two small flat plates which provide uniform physical and electrical contact with ...	08/09/1988
4653337	Containers for use in detecting micro-organisms For use in detecting micro-organisms in a sample of a substance, a container for holding the sample consists of a glass bottle and closure in the form of an elastomeric bung, the bung being provided with a pair of chambers each housing a respective electr...	03/31/1987
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
4578170	Mounting structure for electronic probes A rapidly demountable structure for supporting electronic probes within a reactor vessel at the inner end of a dip tube element. The structure includes a fixed dip tube element which is permanently positioned in a recess at the inner end of the dip tube, ...	03/25/1986
4547735	Instrument for measuring the hematocrit value of blood The new instrument for taking readings of the hematocrit value from a blood sample has two electrodes with which the conductivity of the sample may be measured. The sample contacting faces of the electrodes are placed in a horizontal plane with an accurat...	10/15/1985
4463316	Method and apparatus for determining the dynamic surface potential of a solution Method and apparatus of determining the dynamic surface potential of a solution, wherein a steady stream of the solution is formed, and the surface potential at a free surface of the stream of solution is measured by means of a rotary electrode that rotat...	07/31/1984
4446435	Ultrasonic streaming current detector An ultrasonic streaming current detector for developing on a continuous basis, electrical signal which is a function of the charge condition existing in the stream containing charged particles therein, for thereby facilitating the determination of the dos...	05/01/1984
4220921	Conductivity probe for viscous liquids A conductivity probe having a cylindrical body with an annular open-sided groove in which the electrodes are disposed, and a sliding cover wall for the groove biased to a position covering the groove but easily operable with one hand to slide the cover so...	09/02/1980
4133722	Process for determining properties of materials A process and apparatus applicable to products which are or can be made electrically conductive for the purpose of measuring information encoded in them as a result of the manufacturing steps employed. Elemental mechanogalvanic potentials reflect a measur...	01/09/1979
4045725	Rotating asymmetric electrode for measuring characteristics of electrochemical cells In an electrochemical cell passing a constant current, an electrode rotating asymmetrically with respect to a fixed electrode produces an ac voltage, having a component at the rotational frequency, between the rotating and fixed electrodes because the int...	08/30/1977

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Class 324/447 - With movable or adjustable electrode