Class / Patent application number | Description | Number of patent applications / Date published |
204433000 | Measuring carbon or pH | 13 |
20080308421 | Device for the Adjustment of the Ph of Aqueous Solutions - A device for adjustment of the pH of a target liquid includes a working electrode ( | 12-18-2008 |
20090026078 | Controlled activation pH sensor - The present invention pertains to a means of combining and configuring specific hydrophilic and dielectric materials in such a way as to allow an antimony/reference electrode pH sensor to be packaged and stored dry yet become fully hydrated to an activated state after exposure to aqueous liquids. The sensor is packaged and stored dry to maintain component stability and minimize component degradation. When the user removes the sensor from the package and the sensor tip is submerged in a hydration (ion conduction) media or solution, the hydrophilic coating along with the impregnated reference wick, absorb the fluid to create an electrolytic gel inside the reference wick, which activates the pH sensor. | 01-29-2009 |
20100059375 | Metal salt hydrogen sulfide sensor - A hydrogen sulfide sensor is made from a metal acetate film, such as a thin film of copper acetate, formed on a set of monitoring electrodes, by evaporation of a metal acetate aqueous solution disposed on the electrodes, for detecting a weak gas, such as hydrogen sulfide, carried in a gas carrier, such as a nitrogen carrier, for detecting low concentration of the weak gas, such as ten ppm, when the conductivity of the film changes by several orders of magnitude, that produces a metal sulfide, such as copper sulfide, that is a good electrical conductor at room temperature, for example, as the metal acetate is converted directly to a metal sulfide upon exposure to hydrogen sulfide. | 03-11-2010 |
20100140089 | FLEXIBLE pH SENSORS AND pH SENSING SYSTEMS USING THE SAME - This invention provides an extended gate ion-sensitive field effect transistor as a pH sensor for measuring the pH value of a solution under test. This invention also provides a pH sensing system comprising a separable and flexible pH sensor for measuring the pH value of a solution under test, wherein the transistor of the pH sensor can be prevented from direct contact with the solution. | 06-10-2010 |
20120055791 | DEVICE FOR DETECTING AN ANALYTE IN A FLOWABLE SAMPLE - A pH sensor device for continuously measuring pH in a flowable sample, the device including a housing having a channel and cavity for capturing and directing a sample aliquot to a pH sensor. The pH sensor device may further include a porous material placed adjacent to the pH sensor to attract a sample aliquot to the pH sensor via capillary force. | 03-08-2012 |
20130248364 | ELECTROCHEMICAL SENSORS - Systems and methods are provided for detecting the presence of an analyte in a sample. A solid state electrochemical sensor can include a redox active moiety having an oxidation and/or reduction potential that is sensitive to the presence of an analyte immobilized over a surface of a working electrode. A redox active moiety having an oxidation and/or reduction potential that is insensitive to the presence of the analyte can be used for reference. Voltammetric measurements made using such systems can accurately determine the presence and/or concentration of the analyte in the sample. The solid state electrochemical sensor can be robust and not require calibration or re-calibration. | 09-26-2013 |
20130334044 | Deep sea pH sensor - Systems and methods are provided for a deep sea pH sensor. In one embodiment, a method for manufacturing a pH sensor comprises forming a sensor electrode in a working surface of a die wherein the sensor electrode is able to sense the pH of a liquid and forming at least one isolation groove around the sensor electrode on the working surface of the die, wherein the die has a wide street around the sensor electrode and the at least one isolation groove. The method further comprises mounting the die onto a base and securing a seal on the working surface in the wide street, wherein the seal surrounds the isolation groove, the seal sealing the liquid within the portion of the working surface of the die containing the sensor electrode and the isolation groove, when the pH sensor is subjected to high pressure. | 12-19-2013 |
20140042026 | ELECTROCHEMICAL SENSORS - Systems and methods are provided for detecting the presence of an analyte in a sample. A solid state electrochemical sensor can include a redox active moiety having an oxidation and/or reduction potential that is sensitive to the presence of an analyte immobilized over a surface of a working electrode. A redox active moiety having an oxidation and/or reduction potential that is insensitive to the presence of the analyte can be used for reference. Voltammetric measurements made using such systems can accurately determine the presence and/or concentration of the analyte in the sample. The solid state electrochemical sensor can be robust and not require calibration or re-calibration. | 02-13-2014 |
20140083853 | 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:
| 03-27-2014 |
20140090978 | POTENTIOMETRIC SENSOR - A potentiometric sensor includes an elongate non-glass, non-metal housing having opposite first and second longitudinal ends and a length extending between the first and second longitudinal ends. The housing defines a lumen extending along the length of the housing. A measuring half-cell assembly is received in the lumen of the housing and secured to the housing. The measuring half-cell assembly includes a glass body having opposite first and second longitudinal ends and a length extending between the first and second ends of the glass body. The second longitudinal end of the glass body is adjacent the second longitudinal end of the housing and a longitudinal extent of the glass body is less than the length of the housing. | 04-03-2014 |
20140262781 | PH SENSOR AND MANUFACTURING METHOD - Disclosed is a pH sensor comprising a carrier ( | 09-18-2014 |
20160187281 | HYDROGEN ION ELECTRODE COMPOSED OF COMPOSITE MATERIAL OF NANO IRIDIUM OXIDE AND POLYMER RESIN AND ENABLING SURFACE REGENERATION, PH SENSOR USING SAME, AND METHOD FOR MANUFACTURING SAME - Provided are a hydrogen ion electrode composed of a composite material of polymer resin and nano iridium oxide, the composite material containing 1-10 nm sized nano iridium oxide particles and/or aggregates thereof which are dispersed to be electrically connected to each other in a moldable, thermoplastic, and hydrophobic polymer resin matrix; a pH sensor using the same; and a method for manufacturing the same. The surface of the hydrogen ion electrode shows very fast pH sensitivity when exposed to a sample solution, and the pH sensitivity is approximate to biphasic characteristics. Furthermore, regardless of high reproducibility of pH sensitivity, abrupt pH change, and repetitive use, very low hysteresis, durability due to high physical strength, and high surface regeneration due to polishing are exhibited, and thus, the lifetime of the electrode can be extended and various sizes and shapes of electrodes can be easily manufactured. | 06-30-2016 |
20160202202 | SENSORS INCORPORATING PALLADIUM ELECTRODES | 07-14-2016 |