Class / Patent application number | Description | Number of patent applications / Date published |
204416000 | Ion-sensitive electrode | 37 |
20080289960 | Electrode for Superoxide Anion and Sensor Including the Same - An electrode for superoxide anions characterized by comprising a conductive component and, superimposed on a surface thereof, a film resulting from electrolytic polymerization of a metal thiofurylporphyrin/axial ligand complex; and a sensor for measuring a superoxide anion concentration including the same. The electrode for superoxide anions, by virtue of not only the excellent performance of electrode provided with the metal porphyrin complex polymer film, but also the presence of the axial ligand, can prevent poisoning by a catalyst poison such as hydrogen peroxide. Accordingly, in any of in vitro or in vivo environments, this electrode for superoxide anions enables detection of superoxide anion radicals without suffering any influence from a catalyst poison such as hydrogen peroxide. Moreover, quantitative assay of superoxide anions can be performed by the use of this electrode for superoxide anion in combination with a counter electrode or a reference electrode. Thus, this electrode for superoxide anions can find wide applicability in various fields. | 11-27-2008 |
20080302660 | Silicon Electrochemical Sensors - Described herein are substrates, sensors and systems related to measuring the concentration of an analyte such as hydrogen ion in a sample. Redox active moieties whose reduction and/or oxidation potentials are sensitive to the presence of an analyte are immobilized onto a silicon surface. Immobilized redox active moieties whose reduction and/or oxidation potential are insensitive to the analyte can be used for reference. Voltammetric measurements made using such modified silicon surfaces can accurately determine the presence and/or concentrations of analytes in a sample of interest. The silicon electrochemical sensors of the invention are robust and can be made so as not to require calibration or re-calibration. | 12-11-2008 |
20090032396 | UNITARY IONIC PROBE - A unitary ionic probe is provided. The unitary ionic probe includes a substantially elongate body including a central axis (AA), a proximal end, and a distal end. The unitary ionic probe further includes an active ion sensitive region that is located on and bonded into an exterior of the elongate body in a region of the proximal end and an active electrode in ionic communication with the active ion sensitive region. The unitary ionic probe further includes a reference ion sensitive region that is located on and bonded into the exterior of the elongate body and is spaced-apart from the active ion sensitive region and a reference electrode in ionic communication with the reference ion sensitive region. | 02-05-2009 |
20090032397 | IONIC PROBE INCLUDING AN EXTRUDABLE CONDUCTIVE JUNCTION MATERIAL - An ionic probe including an extrudable conductive junction material is provided. The ionic probe includes an outer shell holding the conductive junction material and an ionic probe assembly located at least partially within the outer shell, with the ionic probe assembly including an active ion sensitive region extending from a proximal end of the outer shell and further including an active electrode and reference electrode extending from a distal end. The ionic probe further includes at least one moveable seal that forces extrusion of a portion of the conductive junction material. | 02-05-2009 |
20090166198 | REFERENCE ELECTRODE - The invention provides a reference electrode including a liquid electrolyte containing water, a water soluble organic compound with molecular size and boiling point are both greater than water, and an ionic salt; a solid crystal of the ionic salt in the liquid electrolyte; a metal/metal salt complex layer in contact with the liquid electrolyte; an leading wire connected to the metal/metal salt complex layer; an insulation case for containing the liquid electrolyte; and a nano-porous junction material embedded in the insulation case for contacting the liquid electrolyte, wherein a pore size of the nano-porous junction material is greater than a cation diameter of the ionic salt but smaller than a molecular length of the water soluble organic compound. The solid crystal of the ionic salt is the sediment of part of the ionic salt because the amount of the ionic salt is more than its solubility in the liquid electrolyte. | 07-02-2009 |
20090277789 | Wireless Chemical Sensor and Sensing Method for Use Therewith - A wireless chemical sensor includes an electrical conductor and a dielectric material on the conductor. The conductor is electrically unconnected and is shaped for storage of an electric field and a magnetic field. In the presence of a time-varying magnetic field, the conductor resonates to generate harmonic electric and magnetic field responses, each of which has a frequency associated therewith. The dielectric material is selected such that it experiences changes in dielectric attributes thereof in the presence of a chemical-of-interest. Shifts from the sensor's baseline frequency response indicate that the dielectric material has been exposed to the chemical-of-interest. | 11-12-2009 |
20090321258 | Sensor card for determining analytes in liquid or gas samples and method for producing such a sensor card - A sensor card for determining analytes in liquid and gas samples with films connected to one another in sheetlike fashion, namely a sensor film facing the sample with openings and a covering film remote from the sample with openings for electrical tapping, at least one sensor being provided and arranged between the sensor film and the covering film. There is provided between the sensor film and the covering film at least one intermediate film, in which cutouts are provided, the sensor being arranged in one of the cutouts. The sensor card provides a homogeneous thickness, which brings about a reliable sealing of the flow channels for the liquid sample if the sensor card is connected to a plate that partially forms the flow channels within the analysis system. Furthermore, the invention relates to a method for producing such a sensor card. | 12-31-2009 |
20100038243 | NANOPORE BASED ION-SELECTIVE ELECTRODES - Nanopore based ion-selective electrodes and methods of their manufacture as well as methods for their use are disclosed and described. The nanopore based ion-selective electrode can include a pore being present in a solid material and having a nanosize opening in the solid material, a metal conductor disposed inside the pore opposite the opening in the solid material, a reference electrode material contacting said metal conductor and disposed inside the pore, a conductive composition in contact with the reference electrode and disposed in the pore, and an ion-selective membrane. The ion-selective membrane can be configured to isolate the metal conductor, reference electrode material, and conductive composition together within the pore. | 02-18-2010 |
20100175994 | DISC-SHAPED MICROFLUIDIC DEVICE CAPABLE OF DETECTING ELECTROLYTES INCLUDED IN SPECIMEN BY USING ELECTROCHEMICAL METHOD - Provided is a rotatable disc-shaped microfluidic device which can electrochemically detect electrolytes comprised in a specimen. The microfluidic device including: a specimen chamber which accommodates a specimen; a detection chamber which receives the specimen from the specimen chamber; and an ion sensor which is formed in the detection chamber to electrochemically detect electrolytes in the specimen and includes an indicator electrode, a standard electrode and an ion selective film formed on a portion of the indicator electrode. The standard specimen is accommodated in the detection chamber, and a standard potential is measured. Then, the specimen is accommodated in the detection chamber, and a measurement potential is obtained to detect the concentration of the electrolytes comprised in the specimen. | 07-15-2010 |
20100200400 | EMBEDDED BODILY FLUID ANALYSIS DEVICE - The invention relates to an embedded bodily fluid analysis device comprising a measuring cell containing the bodily fluid to be analyzed, at least one reference cell containing a reference standard and an electronic measuring circuit. The measuring cell is provided with at least one work electrode of the measuring cell and with at least one reference electrode of the measuring cell. The reference cell is provided with at least one work electrode of the reference cell formed by the same material or materials as a work electrode of the measuring cell and with at least one reference electrode of the reference cell formed by the same material or materials as a reference electrode of the measuring cell. | 08-12-2010 |
20110031119 | PLASTIC POTENTIOMETRIC ION-SELECTIVE SENSOR AND FABRICATION THEREOF - The present invention discloses a plastic potentiometric ion-selective sensor based on field-effect transistors which can be fabricated to form the miniaturized component via sputtering and/or printing method. A plastic potentiometric ion-selective sensor doesn't need an additional bias voltage to convert the signals. The disclosed plastic sensor comprises a plastic substrate, at least one working electrode formed on the plastic substrate, a reference electrode printed on the substrate, and a golden finger printed on the plastic substrate. The golden finger is for electrically coupling with the external world and for outward transmission of signals detected at the working electrode and the reference electrode. The disclosed plastic potentiometric ion-selective sensor is replaceable. | 02-10-2011 |
20110272280 | Ion Sensor - Provided is an ion sensor with which the concentration of ions in a solution can be determined without any reference electrode. The ion sensor is equipped with: a first electrode plate; a second electrode plate which has been disposed opposite the first electrode plate and has one or multiple openings; an ion-sensitive film continuously formed so that the film is interposed between the first electrode plate and the second electrode plate, blocks up one side of each opening of the second electrode plate, and extends from the end of that side of the opening to the outer surface of the second electrode plate through the inner wall surface of the opening; and a sensor support which supports the second electrode plate so that when the ion concentration of a test solution to be examined is determined, the ion-sensitive film comes into contact with the test solution only in the portions thereof that have been formed in each opening and on the outer surface of the second electrode plate. The ion sensor is configured so that the thickness of the ion-sensitive film interposed between the first electrode plate and the second electrode plate is different from the thickness of the ion-sensitive film formed on the outer surface of the second electrode plate. A difference in potential between the first electrode plate and the second electrode plate is measured. | 11-10-2011 |
20110303540 | PHOTO-CATALYST OZONE DETECTOR - A photo-catalyst ozone detector includes a base. A positive electrode and a negative electrode are respectively disposed on the base. A photo-catalyst coating is disposed on the base for connecting the positive electrode and the negative electrode, and reacting with the ozone to detect ozone consistency, wherein the photo-catalyst coating contains titanium dioxide. | 12-15-2011 |
20120067724 | ELECTROCHEMICAL SENSORS - Described herein are substrates, sensors and systems related to measuring the concentration of an analyte such as hydrogen ion in a sample. Redox active moieties whose reduction and/or oxidation potentials are sensitive to the presence of an analyte are immobilized onto a surface of an electrode. Immobilized redox active moieties whose reduction and/or oxidation potential are insensitive to the analyte can be used for reference. Voltammetric measurements made using such modified surfaces can accurately determine the presence and/or concentrations of analytes in a sample of interest. The electrochemical sensors of the invention are robust and can be made so as not to require calibration or recalibration. | 03-22-2012 |
20120073970 | Amperometric Oxygen Sensor - An amperometric oxygen sensor for sensing the partial pressure of oxygen is disclosed. The amperometric oxygen sensor having a multilayered body which comprises a plurality of oxygen ion conductor layers interposed between a plurality of oxygen-porous electrode layers. Oxygen from a sample gas enters porous cathode layer of the sensor, through the ion conductor diffuses to anode because of a potential difference, and then an amperometric current is measured, which is proportional to the partial pressure of the oxygen. The amperometric oxygen sensor further comprises a heating member embedded within the sensor body and a heating controller electrically connects with the heating member to heat and maintain the sensor at working temperature, about 500˜800° C. An electrical insulator layer, but not thermal insulator, is blocked between the heating member and the oxygen-porous electrode strips so as to prevent the amperometric current from electromagnetic field interference. | 03-29-2012 |
20120168308 | ELECTROCHEMICAL SENSORS - An electrode for use in a electrochemical sensor comprises carbon modified with a chemically sensitive redox-active compound, excluding an electrode based on carbon having derivatised thereron two redox-active species wherein at least one of said species is selected from anthraquinone, phenanthrenequinone and N,N′-diphenyl-p-phenylenediamine (DPPD). The invention further provides a pH sensor comprising:
| 07-05-2012 |
20120241320 | LOW-SLOPE pH ELECTRODE - A low-slope pH electrode ( | 09-27-2012 |
20120261260 | ELECTROLYTE ANALYZER - Electrolyte analyzers are used in a variety of ways, and problems vary from reagent deterioration due to reagent replenishment, mixing of foreign substances during reagent replenishment, electrode deterioration due to the passage of the validity date, to the operator's inputting errors. It is thus necessary to judge abnormalities of measured values resulting from such inappropriate usage, based on the fluctuation patterns of the results of daily electrolyte calibration. | 10-18-2012 |
20120279859 | CHEMICALLY-SENSITIVE ARRAY WITH ACTIVE AND REFERENCE SENSORS - Methods and apparatus relating to very large scale FET arrays for analyte measurements. ChemFET (e.g., ISFET) arrays may be fabricated using conventional CMOS processing techniques based on improved FET pixel and array designs that increase measurement sensitivity and accuracy, and at the same time facilitate significantly small pixel sizes and dense arrays. Improved array control techniques provide for rapid data acquisition from large and dense arrays. Such arrays may be employed to detect a presence and/or concentration changes of various analyte types in a wide variety of chemical and/or biological processes. In one example, chemFET arrays facilitate DNA sequencing techniques based on monitoring changes in hydrogen ion concentration (pH), changes in other analyte concentration, and/or binding events associated with chemical processes relating to DNA synthesis. | 11-08-2012 |
20120305397 | GAS SENSOR ELEMENT AND GAS SENSOR EMPLOYING THE GAS SENSOR ELEMENT - In a gas sensor element, a measurement gas is introduced to a measurement electrode through a porous diffusion-resistant layer. A catalyst layer is formed on an outer surface of the diffusion-resistant layer via which the measurement gas flows into the diffusion-resistant layer. In the catalyst layer, the percentage content of Pt is in the range of 2.5 to 12 mass %, the percentage content of Pd is in the range of 0.4 to 2 mass %, and the percentage content of Rh is in the range of 0.06 to 1.5 mass %. The catalyst layer includes catalytic noble metal particles each of which is made of an alloy that contains at least Pt. For each of the catalytic noble metal particles, the percentage content of Pt at an outer peripheral portion of the catalytic noble metal particle is lower than that at a core portion of the catalytic noble metal particle. | 12-06-2012 |
20130056353 | ION SENSITIVE DETECTOR - An ISFET detector for determining concentration of a target ion in a fluid, the apparatus comprising: a semiconducting substrate comprising a source and a drain having source and drain electrodes respectively and a channel region between them in the substrate; an insulating material overlying the channel region; a gate electrode formed on the insulating material; a reference electrode electrifiable to establish an electric field in the channel region; an accumulator comprising a layer of material of thickness less than or equal to about 2 nm (nanometers) that accumulates a quantity of target ions responsive to concentration of the target ions in the fluid; a layer of a conducting material on which the accumulator is formed that is separate from the gate electrode; and a conducting element that electrically connects the layer of conducting material to the gate electrode. | 03-07-2013 |
20130126351 | ION SENSOR, ION SENSOR MODULE, AND ION SENSOR MANUFACTURING METHOD - An ion sensor includes a sensor main body having a channel for a sample and an opening connected to the channel, a responsive portion which is filled in the opening and selectively responds to a specific ion, an electrode which has a ring shape, is set such that a central axis of the ring is substantially perpendicular to a central axis of the channel, and senses the response, and an output terminal which is formed out of one metal plate out of which the electrode is formed, has a pin shape, and is held by the sensor main body such that an axis extends along a direction substantially perpendicular to the central axis of the channel and the central axis of the ring. | 05-23-2013 |
20140151226 | Potentiometric Measuring Chain - An ion-selective potentiometric measuring chain having the I | 06-05-2014 |
20150323485 | A REFERENCE ELECTRODE AND AN ARRANGEMENT FOR AN ELECTROCHEMICAL MEASUREMENT - The present invention relates to the field of measuring and to electrochemical measurement, and more particularly to a reference electrode and to an arrangement for an electrochemical measurement. A reference electrode ( | 11-12-2015 |
204417000 | Liquid ion-exchanger | 4 |
20110226619 | Electrochemical Gas Sensors with Ionic Liquid Electrolyte Systems - An electrochemical gas sensor includes an electrolyte including at least one ionic liquid which includes an additive portion including at least one organic additive, at least one organometallic additive or at least one inorganic additive. | 09-22-2011 |
20110253534 | Electrochemical Gas Sensor with an Ionic Liquid Electrolyte System Including at Least One Monoalkylammonium, Dialkylammonium, or Trialkylammonium Cation - An electrochemical gas sensor includes an ionic liquid as electrolyte. The ionic liquid includes at least one cation selected from the group of a monoalkylammonium cation, a dialkylammonium cation, and a trialkylammonium cation. The individual alkyl groups of the cation can be branched or unbranched and have 1 to 4 carbon atoms. The individual alkyl groups of the cation can be the same or different in case of the dialkylammonium cation and the trialkylammonium cation. In a number of embodiments, the individual alkyl groups have 2 to 4 carbon atoms. | 10-20-2011 |
20130168246 | LIQUID MEMBRANE TYPE ION-SELECTIVE ELECTRODE - This invention relates to a liquid membrane type ion-selective electrode that can restrain an electric potential fluctuation of an inner electrode due to ultraviolet rays and that can conduct an analysis with high accuracy. The liquid membrane type ion-selective electrode comprises a liquid membrane type ion-sensitive membrane wherein a predetermined ionophore is supported by a base material, an inner electrode that has electrical conductivity and that is arranged at a position on the ion-sensitive membrane through which light transmitted is incident, an internal solution that contains an electrolyte and that makes contact with the ion-sensitive membrane and the inner electrode, wherein the ion-sensitive membrane contains an ultraviolet absorber or an ultraviolet reflecting agent having an insulative property. | 07-04-2013 |
20130168247 | ION ANALYZER - This invention relates to an ion analyzer of a multisensor type that can conduct an accurate analysis and that is easy to maintain. The ion analyzer has a liquid membrane type ion-selective electrode comprising multiple types of ion-sensitive membranes wherein each of multiple types of ionophores that selectively capture different ion is supported by a base material respectively, an internal solution and a liquid junction from which the internal solution exudes, and the multiple types of the ion-sensitive membranes and the liquid junction are arranged on the same supporting body, and at least one ion-sensitive membrane among the multiple types of the ion-sensitive membranes is arranged outside of an area that is immersed in the internal solution that exudes from the liquid junction. | 07-04-2013 |
204418000 | Organic membrane | 5 |
20080264790 | Ion concentration measuring device and ion concentration measuring element - A crown ether derivative that acts as cation capturing ligand and alkanethiol having a longer carbon chain than a linker are immobilized, coexisting together, on the surface of a gold electrode, by using as the linker an insulating molecule (e.g., alkanethiol) that forms self-assembled monolayers. Electromotive force produced in association with cation coordination is measured by a potentiometer through a change in interfacial potential on the surface of the gold electrode. Further, an insulated gate field effect transistor formed on the same substrate as the gold electrode is used as the potentiometer. Furthermore, a straight-chain polymer physically adsorbed on the gold electrode is used in order to reduce the influence of the adsorption of impurities on the surface of the electrode during biological sample measurement. | 10-30-2008 |
20090071826 | Anion concentration measuring device and anion concentration measuring element - The present invention aims to simplify the structure and a fabrication method of an ion-selective electrode in an ion concentration measuring device that measures an anion, particularly a chloride ion, in a biological component. To this end, in a potential difference measuring unit, a quaternary ammonium salt derivative serving as a ligand for an anion is immobilized to the surface of a gold electrode by using as a linker an insulative molecule forming a self-assembled monolayer. The potential difference measuring unit measures an electromotive force generated with anion binding, as an interface potential change on the surface of the gold electrode. In order to reduce the influence of adsorption of impurities on the electrode surface, a high-molecular weight polymer is physically adsorbed on the gold electrode and thus used when a biological component is measured. | 03-19-2009 |
20100012493 | MULTI-IONOPHORE MEMBRANE ELECTRODE - A polymeric membrane for ion sensitive measurement comprising a polymer, a lipophilic salt and at least two ionophores selective for different chemical species. The membrane may be used in a pseudo reference for measurement of a plurality of ions. | 01-21-2010 |
20110056831 | MICROFABRICATED LIQUID JUNCTION REFERENCE ELECTRODE - A microfabricated liquid junction reference electrode that can be integrated with microfabricated chemical or electrical sensors, which electrode is an M/MX type reference electrode comprised of a metal and a metal salt, as well as a X | 03-10-2011 |
20180024088 | IMPROVED MAGNESIUM ION SELECTIVE MEMBRANES | 01-25-2018 |
204419000 | Inorganic membrane | 4 |
20140339080 | MICROMECHANICAL SENSOR DEVICE - A sensor device for detecting and/or measuring gases includes two electrodes. A thin-layered proton-conductive material is fitted between the two electrodes. The gas can be detected and/or measured by a proton gradient that arises due to different gas concentrations. | 11-20-2014 |
20160131611 | ANION SENSOR - The present invention announces a method for extending the storage life of a test reagent for quantification of ionic components in samples by using an anion sensor. The purpose of the present invention is to provide an anion sensor, wherein the storage life of the anion sensor itself may be extended, to thereby extend the storage life of the anion sensor beyond that of conventional anion sensors. According to the present invention, through adjustment of the pH of the internal solution (internal gel liquid), it is possible to provide an anion sensor that maintains consistent performance, and has longer storage life. | 05-12-2016 |
204420000 | Glass ion-selective membrane | 2 |
20100252431 | ION-SELECTIVE ELECTRODE - Disclosed is an ion-selective electrode having excellent mechanical strength, excellent durability, low membrane resistance and good ion response accuracy. This ion-selective electrode comprises a response glass membrane which has ion selectivity and is made of an oxynitride glass containing Li. | 10-07-2010 |
20120325660 | COMBINATION ELECTRODE FOR ION CONCENTRATION MEASUREMENT - A combination electrode for ion concentration measurement is provided including a glass electrode and a reference electrode whose internal electrode is made of silver-silver chloride, wherein a sealing means is provided configured to seal an upper surface of a reference electrode chamber formed in an outer tube which houses an internal electrode and an internal solution of the reference electrode, and around a glass support tube penetrating the outer tube along a substantially center axis thereof an annular silver member which the glass support tube penetrates along a center axis thereof, annular sealing elastic members for liquid-tightly sealing a space between the silver member and the glass support tube, and a space between the silver member and the outer tube, respectively, and the reference electrode internal electrode is connected to a terminal for a reference electrode through the silver member. | 12-27-2012 |