| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 205787500 | For pH | 29 |
| 20090101524 | IONIC PROBE - An ionic probe is provided according to the invention. The ionic probe includes an active electrode configured to generate a measurement signal for an external test fluid, a first reference electrode configured to generate a first reference signal, and an at least second reference electrode configured to generate at least a second reference signal. The measurement signal is compared to the first reference signal and the at least second reference signal in order to determine an ionic measurement of the external test fluid. | 04-23-2009 |
| 20090211924 | pH Electrode and Electrolyte - A pH half-cell method and apparatus includes an electrode, a pH sensitive glass membrane and an electrolyte in electrolytic contact with the electrode and membrane. The membrane includes at least about 15 mole percent lithium, and the electrolyte includes a lithium salt as the predominant monovalent cation. The pH half-cell is used with a reference half-cell and meter to provide an electrochemical potential measurement sensor, optionally with both half-cells disposed within a single housing. The lithium salt electrolyte is also used in a method for storing, conditioning, preserving and/or rehabilitating a pH half-cell. | 08-27-2009 |
| 20100236943 | Method and device for the preparation of liquid samples in NMR spectroscopy using a combined titration and pH electrode - A method and device have an electrode rod ( | 09-23-2010 |
| 20100270179 | METHOD FOR MEASURING PH VALUE OF SAMPLE SOLUTION AND SYSTEM THEREOF - The invention provides a method for measuring a pH value of a sample solution, which is performed by a pH sensing device, including: providing a pH sensing device and a sample solution, wherein the pH sensing device includes a pH sensor array, and the pH sensor array comprises m pH sensors, and m is an integer greater than 1; measuring the sample solution with the pH sensor array for n times, wherein n is an integer greater than 1, n measurement values are generated, each pH sensor generates a measurement value for each measurement, and the total amount of measurement values generated is n×m; and generating a pH value of the sample solution by all of the measurement values generated by the pH sensor array. | 10-28-2010 |
| 20110048971 | ROBUST POTENTIOMETRIC SENSOR - A modular potentiometric sensor includes a housing having measuring and reference half-cells, a temperature sensor, and solution ground combination assembly. An electrical conductor of the combination assembly extends through the housing, while remaining electrically isolated from the housing and half-cells, terminating at an electrically and thermally conductive end cap. Seals at opposite ends of the housing permit portions of the half-cells and the combination assembly to extend therethrough. The seals, measuring half-cell, and the combination assembly define an electrolyte compartment for the reference half-cell. The end cap provides close thermal coupling to the test fluid while also serving as a test fluid ground that is electrically isolated from the electrolyte compartment. The housing, measuring half-cell, reference half-cell, and combination assembly are modular, with the measurement sensor configurable in a plurality of lengths by altering the length of the housing independently of the half-cells and combination assembly. | 03-03-2011 |
| 20110056847 | ION CONCENTRATION MEASUREMENT SYSTEM AND METHODS THEREOF - An ion concentration measurement system is provided. The ion concentration measurement system has: at least an end system having a sensing unit for measuring the ion concentration of a test solution to generate at least a sensing signal; a control unit for controlling the acquisition of the sensing signal; a display unit for displaying the sensing signal in real time; and an end wireless transmission interface for transmitting the sensing signal wirelessly. | 03-10-2011 |
| 20110186447 | Electrode with Integrated Optical Sensor - Glass pH electrode with integrated optical sensor, characterized in that said electrode can be sterilized without substantial alteration of its optical characteristics, in particular in respect to gamma ray irradiation sterilisation. | 08-04-2011 |
| 20120067744 | Impurity Detection Device and Method - There is provided a sample preparation device and method for preparing a sample of liquid for detection of impurities. First ( | 03-22-2012 |
| 20120145563 | pH OR CONCENTRATION MEASURING DEVICE AND pH OR CONCENTRATION MEASURING METHOD - Disclosed are a pH or concentration measuring device and a pH or concentration measuring method which enable measurement in the shortest possible time even in an object to be measured having low buffer capacity. Specifically disclosed are a pH or concentration measuring device and measuring method for measuring the pH or concentration of a sample solution that is an object to be measured, the device being provided with first and second sensors that each output a signal corresponding to the pH or concentration of a solution, an inspection tube that is provided with a first room in which the first sensor is disposed and a second room in which the second sensor is disposed, a feeding means that feeds a baseline solution into the inspection tube, and an injecting means which injects the sample solution into the first room of the inspection tube and brings the sample solution into contact with the first sensor, wherein a vibration means which vibrates the interface between the sample solution stored in the first room and the baseline solution is provided. | 06-14-2012 |
| 20120152765 | POTENTIOMETRIC SENSOR AND METHOD FOR THE START-UP OF A POTENTIOMETRIC SENSOR - A potentiometric sensor includes a housing, in which a reference half cell space and a therefrom separated, measuring half cell space are formed. The reference half cell space contains a reference electrolyte and at least one part of a first potential sensing electrode for sensing a reference potential, and the measuring half cell space is liquid-tightly sealed by a measuring membrane, especially a pH-sensitive glass membrane, and contains an inner electrolyte and at least one part of a second potential sensing electrode for sensing a measuring half cell potential. A passageway extends through a wall of the housing, opens into the reference half cell space, and is sealed relative to a medium surrounding the housing, and wherein the potentiometric sensor has means for producing through the passageway an electrolytic contact between the reference electrolyte and the medium surrounding the housing. | 06-21-2012 |
| 20120279874 | ELECTROCHEMICAL PH MEASUREMENT - A method of measuring pH of aqueous liquid with little or no buffer present uses an electrochemical pH sensor which comprises a plurality of electrodes with a redox active organic compound attached to an electrode and having at least one functional group convertible electrochemically between reduced and oxidized forms with transfer of at least one proton between the compound and surrounding aqueous phase, wherein the compound has at least one substituent group which promotes hydrogen bonding at a said functional group and thereby increases the reaction rate of proton transfer. The substituent group may form an internal hydrogen bond with a redox-convertible group or may enhance polarity to promote electrostatic interaction with water molecules and reduce activation energy. Such an electrochemical sensor may be used for pH measurement in computer controlled equipment for processing an aqueous liquid. | 11-08-2012 |
| 20120298530 | SMART SENSOR SYSTEM USING AN ELECTROACTIVE POLYMER - A system for measuring a solution pH includes a potentiostat with a working electrode made of an electro-conductive solid polymer transducer, an input to receive the potential to be applied between the working electrode and a reference electrode, and an output to transmit a signal representative of the current flowing between a counter electrode and the working electrode, the three electrodes being immerged into the solution. The system further includes a digital processor connected to a digital to analog converter for generating the potential to be applied between the working and the reference electrodes; and to an analog to digital converter for receiving a digital value representative of the current. The digital processor is adapted to modify the potential to maintain the current inside a predetermined range such that the potential is representative of the solution pH when the current is inside the predetermined range. | 11-29-2012 |
| 20120318684 | pH Electrode and Electrolyte - A pH half-cell method and apparatus includes an electrode, a pH sensitive glass membrane and an electrolyte in electrolytic contact with the electrode and membrane. The membrane includes at least about 15 mole percent lithium, and the electrolyte includes a lithium salt as the predominant monovalent cation. The pH half-cell is used with a reference half-cell and meter to provide an electrochemical potential measurement sensor, optionally with both half-cells disposed within a single housing. The lithium salt electrolyte is also used in a method for storing, conditioning, preserving and/or rehabilitating a pH half-cell. | 12-20-2012 |
| 20130032494 | PORTABLE DEVICE FOR ANALYSING pH OR ANOTHER VARIABLE BY ELECTROCHEMICAL MEASUREMENT - Portable device ( | 02-07-2013 |
| 20130092560 | ELECTRODE SYSTEM AND METHOD FOR CALCULATING CHARACTER VALUES OF SOLUTION USING THE SAME - Disclosed is an electrode system capable of more accurately measuring properties of solutions using a porous platinum electrode. The electrode system includes a low porosity platinum electrode in which platinum is deposited in a porous form on the surface of an electrode, and a high porosity platinum electrode having a higher roughness factor than the low | 04-18-2013 |
| 20140034515 | REFERENCE ELECTRODE - A reference electrode with an in-situ modified porous diaphragm has at least one housing ( | 02-06-2014 |
| 20140034516 | IONIC PROBE - An ionic probe is provided according to the invention. The ionic probe includes an active electrode configured to generate a measurement signal for an external test fluid, a first reference electrode configured to generate a first reference signal, and an at least second reference electrode configured to generate at least a second reference signal. The measurement signal is compared to the first reference signal and the at least second reference signal in order to determine an ionic measurement of the external test fluid. | 02-06-2014 |
| 20140291171 | METHOD AND DEVICE FOR DETECTING PH VALUE OF A SOLUTION - The present invention provides a PH value detection device and a method of detecting a PH value of a solution. The PH value detection device may comprise: a first electrode and a second electrode, wherein the first electrode and the second electrode are to be inserted into the solution; a power source for applying a bipolar rectangular potential pulse signal to the first electrode and the second electrode; a current detection means connected between the first electrode and the second electrode for detecting a current I flowing through the first electrode and the second electrode; and a calculating unit for calculating the PH value of the solution, based on the detected current I. By means of the above design of the present invention, the use of the fragile glass electrode and the reference electrode, e.g., an Ag/AgCl, saturated calomel electrode, can be avoided, which has a favorable effect on the daily maintenance of the PH value detection device and on the protection of the environment, and it also has a favorable effect on the miniaturization and facilitation of the PH value detection device. In addition, only measuring the current flowing through the electrode pair to calculate the PH value of the solution facilitates real time monitoring of the change of the PH value of the solution. | 10-02-2014 |
| 20140311923 | PH SENSOR, PH MEASUREMENT METHOD, ION SENSOR, AND ION CONCENTRATION MEASUREMENT METHOD - A pH sensor may include a reference electrode including a p-channel field effect transistor (FET) whose gate includes a diamond surface having a hydrogen ion insensitive terminal, and a working electrode. | 10-23-2014 |
| 20140318990 | pH SENSOR SYSTEM AND METHODS OF SENSING pH - A system for measuring pH includes a substrate and a sensor medium on the substrate. The sensor medium includes at least one oxidized carbon nanostructure and optionally at least one composition immobilized on the at least one oxidized carbon nanostructure. The at least one composition has at least one property that depends on pH. The system further includes at least one measurement system to measure a property of the sensor medium. | 10-30-2014 |
| 20140332412 | DERIVATIZATION OF CARBON - Chemical modification of the surface of elemental carbon comprises a first stage of attaching a compound with an azo group to the elemental carbon and then a second stage of decomposing the azo group in the presence of one or more compounds with an olefinic group so that decomposition of the azo group forms radicals attached to the carbon surface and a said radical forms a covalent bond to a said olefinic group. The second stage may proceed as a polymerization of a vinyl monomer with a redox active group such as ferrocene, anthracene or anthraquinone. The resulting polymer-modified carbon may be used in an electrochemical sensor. | 11-13-2014 |
| 20140332413 | DERIVATIZATION OF CARBON - Derivatization of an elemental carbon surface is accomplished by exposing the carbon surface to an aprotic solvent containing a hydrazone molecule of formula (I) or the corresponding salt of formula (II) wherein R | 11-13-2014 |
| 20140353175 | DERIVATIZATION OF CARBON - A process for derivatization of an elemental carbon surface comprising exposing the carbon surface to a reaction mixture containing a thiol and a free radical initiator, and inducing decomposition of the initiator to free radicals so that moieties from the thiol become covalently attached to the carbon surface. The process can derivatize carbon with a redox active compound having a functional group which can be converted electrochemically between reduced and oxidized forms. Such derivatized carbon may be used in an electrode of an electrochemical sensor. | 12-04-2014 |
| 20150053575 | PASSIVE WIRELESS SENSOR - Systems, devices, and/or methods for use in passive wireless transmission of one or more parameters such as, e.g., pH, temperature, etc. are described. The systems, devices, and/or methods may use a passive sensor located proximate a material and an interrogator that may be used to interrogate the passive sensor and to receive a signal from the passive sensor representative of the one or more parameters. | 02-26-2015 |
| 20150053576 | Measuring Arrangement - A measuring arrangement, comprising: at least three half-cells, each of which has a pH-sensitive membrane, and a measuring circuit, which is embodied to register a half-cell potential of each half-cell relative to a shared reference potential. The half-cell potential of each half-cell depends on the pH-value of a measured liquid contacting its pH-sensitive membrane. The sensitivity of a first of the three half-cells corresponds to a change of its half-cell potential relative to a change of the pH-value of the measured liquid causing it; the sensitivity of a second of the three half-cells corresponds to a change of its half-cell potential relative to a change of the pH-value of the measured liquid causing it; the sensitivity of a third of the three half-cells corresponds to a change of its half-cell potential relative to a change of the pH-value of the measured liquid causing it. | 02-26-2015 |
| 20150101938 | Measurement device with automated calibration - A system for obtaining a pH measurement comprises a disposable probe and a reusable reader. The disposable probe includes an indicating electrode and a reference electrode. The reader operably engages the disposable probe and provides pH information of a sample. The system is configured to be self-calibrating. The system is constructed and arranged to provide pH information based on the potentiometric measurement of the sample solution based on signals received from the at least one indicating electrode and the at least one reference electrode. | 04-16-2015 |
| 20150299890 | SELF-ASSEMBLY OF COATINGS UTILIZING SURFACE CHARGE - An apparatus and method for measuring the isoelectric pH for materials deposited on or otherwise affixed onto and in contact with an electrode surface, and a method for utilizing the isoelectric pH to form nanometer thickness, self-assembled layers on the material, are described. Forming such layers utilizing information obtained about the isoelectric pH values of the substrate and the coating is advantageous since the growth of the coating is self-limiting because once the surface charge has been neutralized there is no longer a driving force for the solid electrolyte coating thickness to increase, and uniform coatings without pinhole defects will be produced because a local driving force for assembly will exist if any bare electrode material is exposed to the solution. The present self-assembly procedure, when combined with electrodeposition, may be used to increase the coating thickness. Self-assembly, with or without additional electrodeposition, allows intimate contact between the anode, electrolyte and cathode which is required for successful application to solid-state batteries, as an example. | 10-22-2015 |
| 20150355127 | Method for Identifying pH, Device for Same, and Method for Identifying Ion Concentration - The purpose of the present invention is to measure pH of a sample with high accuracy in a pH sensor array, without the use of a glass reference electrode. Each time that a sample is measured, the potential Vrm of the sample is identified, and the identified potential Vrm is used to calculate the pH. The outputs Voi | 12-10-2015 |
| 20150355134 | PH VALUE MEASURING DEVICE COMPRISING IN SITU CALIBRATION MEANS - The invention concerns a device for measuring the pH of an effluent, said device comprising means for measuring an item of information representative of the pH of said effluent intended to be brought into contact with said effluent. | 12-10-2015 |
