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| Number | Title | Issue Date |
| 7704374 | Electrochemical gas sensor An electrochemical gas sensor is provided with a carbon-based measuring electrode (3) that it can be used for a large number of electrochemical detection reactions and can be manufactured at a low cost. The measuring electrode (3) contains carbon nanot... | 04/27/2010 |
| 7413687 | Low temperature proton conducting oxide devices A device for conducting protons at a temperature below 550° C. includes a LAMOX ceramic body characterized by an alpha crystalline structure. ... | 08/19/2008 |
| 7343274 | Sensor and method for detecting electric contact degradation A probe cell monitors conditions within electrical power transmission and switchgear apparatus to detect degradation of stressed components. The probe cell is a hardware simulation of components of a specific unit of electrical power apparatus, including electrodes ... | 03/11/2008 |
| 7208071 | Amperometric sensor for low level dissolved oxygen with self-depleting sensor design A dissolved oxygen sensor having a cathode and anode immersed in an electrolyte is designed to provide a low background current in the sensor when a potential is applied to the cathode. The background current is maintained at a desired level by selecting the area an... | 04/24/2007 |
| 7192450 | Porous membranes for use with implantable devices A membrane for implantation in soft tissue comprising a first domain that supports tissue ingrowth, disrupts contractile forces typically found in a foreign body response, encourages vascularity, and interferes with barrier cell layer formation, and a second domain ... | 03/20/2007 |
| 7134999 | Optimized sensor geometry for an implantable glucose sensor An implantable sensor for use in measuring a concentration of an analyte such as glucose in a bodily fluid, including a body with a sensing region adapted for transport of analytes between the sensor and the bodily fluid, wherein the sensing region is located on a c... | 11/14/2006 |
| 7110887 | Residual chlorine meter A residual chlorine meter detects a pre-calibration residual chlorine reaction amount of sample water in a detection section, inputs a calibration standard residual chlorine standard concentration of the sample water in an input section, determines calibration facto... | 09/19/2006 |
| 7060169 | Electrochemical cell for gas sensor An electrochemical cell for applications such as electrochemical fuel cells, or electrochemical cell gas sensors used for detection of target gas species in environments containing or susceptible to presence of same. The electrochemical cell utilizes an ionic liquid... | 06/13/2006 |
| 7020562 | Method of monitoring the operation of gas sensor and system therefor A method of monitoring the operation of a gas sensor is disclosed. A system signal is provided in response to sensing first or second system conditions, and a gas concentration signal is provided in response to sensing first or second gas concentration levels of a g... | 03/28/2006 |
| 6975967 | CO/Oincubator predictive failure for COand Osensors Methods and apparatus for a predictive warning system of the failure of O2 and CO2 sensors, which are particularly suited for an incubator environment are, disclosed. An application of the predictive failure of O2 and CO2 ... | 12/13/2005 |
| 6960290 | Testing and calibration device for an oxygen probe evaluation circuit and method of use of the device A testing and calibrating device for an evaluation circuit of a linear oxygen probe (S) of an internal combustion engine is disclosed. Said device comprises a probe equivalent circuit (SES) having the same terminals (Vs+, Vs−/Vp−, Vp+ and Rc) as the oxygen probe... | 11/01/2005 |
| 6931327 | System and methods for processing analyte sensor data Systems and methods for processing sensor analyte data, including initiating calibration, updating calibration, evaluating clinical acceptability of reference and sensor analyte data, and evaluating the quality of sensor calibration. During initial calibration, the ... | 08/16/2005 |
| 6896781 | Gas sensor with electrically conductive, hydrophobic membranes A highly accurate, long life, low cost gas sensor is disclosed, particularly useful for measuring carbon monoxide and other toxic gases in an environment. The gas sensor has a first, sensing electrode and a second, counting electrode. Positioned between the first an... | 05/24/2005 |
| 6837987 | Carbon monoxide sensor A method and apparatus for detecting the presence of carbon monoxide in a gas which may also contain contaminating substances uses a pre-treatment means to absorb contaminating substances and to convert them to non-contaminating substances. ... | 01/04/2005 |
| 6808619 | Electrode system In an electrode system, particularly for electrochemical sensors, which comprises a working electrode, a counterelectrode and an electrolyte, the counterelectrode is constituted by a material containing an elementary carbon, whereby the long-term stability of the el... | 10/26/2004 |
| 6761817 | Smart determination of dissolved oxygen probe operating bias A method and system for determining dissolved oxygen is disclosed. One or more constant currents are driven through amperometric-type dissolved oxygen probes to develop reference electrode potentials defining the envelope of oxygen electrochemistry. The reference el... | 07/13/2004 |
| 6758962 | Oxygen sensing Oxygen concentration measurement is carried out over a broad range by an instrument utilizing a zinc-air cell having a lower-than-nominal potential difference imposed across its electrodes by a shunt branch incorporating the source-drain circuit of a field effect tr... | 07/06/2004 |
| 6723216 | Method and apparatus for detection of a bubble in a liquid A method for detection of a bubble in a liquid which is placed in a measuring chamber and is in contact with a sensor for measuring the partial pressure of a particular gas in a liquid is provided. The method includes performing a first measurement of the partial pr... | 04/20/2004 |
| 6663756 | Microchip-type oxygen gas sensor based on differential potentiometry Disclosed is a microchip-based differential-type potentiometric oxygen gas sensor, which comprises a working electrode and a reference electrode. The working electrode is composed of a cobalt-plated electrode, a buffered hydrogel, and an ion sensitive gas... | 12/16/2003 |
| 6652722 | Sensor for measuring the partial pressure of a gas of the type comprising an electrochemical cell and a gaseous diffusion barrier Sensor for measuring the partial pressure of a gas in a gaseous medium, includes an electrochemical cell and a diffusion barrier with a porous membrane situated above an orifice made in a component surmounting a casing enclosing said electrochemical cell.... | 11/25/2003 |
| 6623619 | Electrochemical sensor for determining analyte in the presence of interferent and method of using the sensor Electrochemical sensor for determining analyte in the presence of interferent, particularly carbon monoxide in the presence of hydrogen. An electrochemical cell is designed so that current flow resulting from reference electrode potential shift caused by ... | 09/23/2003 |
| 6602401 | Amperometric sensor for low level dissolved oxygen with self-depleting sensor design A dissolved oxygen sensor having a cathode and anode immersed in an electrolyte is designed to provide a low background current in the sensor when a potential is applied to the cathode. The background current is maintained at a desired level by selecting ... | 08/05/2003 |
| 6592746 | Sensor probe for determining hydrogen peroxide concentration and method of use thereof A sensor probe is disclosed which can measure the hydrogen peroxide content of a single sample using two oxygen sensors whose electrodes are encased in defined membranes. The oxygen reference sensor is encased in a hydrophobic membrane which prevents the ... | 07/15/2003 |
| 6454923 | Gas sensor A gas sensor is described which is particularly well suited as a carbon monoxide (CO) sensor in a self test gas sensor. The sensor includes a number of aspects which may or may not be used in conjunction with one another. A first aspect is an embodiment w... | 09/24/2002 |
| 6435003 | Method of identifying a gas and associated apparatus A method for identifying an unknown gas using a diffusion limited sensor providing an electrical signal output when exposed to the gas. According to the method, a sensor is disposed in a chamber of fixed volume and having a gas input and gas output throug... | 08/20/2002 |
| 6436258 | Galvanic-cell gas sensor A galvanic-cell gas sensor includes casings containing a diaphragm permitting the permeation of gas to be detected but having a water-repelling property, a cathode provided on the back side of the diaphragm, an anode formed by electrolytically coating a l... | 08/20/2002 |
| 6428665 | Electrochemical gas sensor An electrochemical gas sensor has a first gas diffusion electrode for a first reaction gas, which is inactive with respect to a second reaction gas at least in a first potential window, and a second gas diffusion electrode for the second reaction gas, whi... | 08/06/2002 |
| 6338266 | Method of identifying a gas and associated apparatus A method for identifying an unknown gas using a diffusion limited sensor providing an electrical signal output when exposed to the gas. According to the method, a sensor is disposed in a chamber of fixed volume and having a gas input and gas output throug... | 01/15/2002 |
| 6303018 | Method and apparatus for determining O2 and N2O in gas mixtures A method for determining relative amounts of O2 and N2 O in gas mixtures by quantitative electrochemical reaction including feeding a gas mixture containing O2 and N2 O to a zinc-air cell having electrodes conne... | 10/16/2001 |
| 6287453 | Method for the diagnosis of a continuous-action lambda probe Periodic forced stimulations are asserted on setpoint values for a lambda control and a system response of a lambda control loop is simulated by a model that includes a sensor delay time as the model parameter. Amplitude gains of the model and the system ... | 09/11/2001 |
| 6176989 | Electrochemical gas sensor An electrochemical gas sensor including a sensor body having a cavity, an electrolyte in the cavity, an auxiliary electrode in contact with the electrolyte, a sensing electrode in contact with the electrolyte, and a blocking electrode in contact with the ... | 01/23/2001 |
| 6165347 | Method of identifying a gas A method and apparatus for identifying an unknown reactive gas in a carrier gas, utilizing a sensor with a diffusion limited inlet. After a signal is established for the carrier gas, a flow of the mixture of carrier gas and reactive gas is passed to the s... | 12/26/2000 |
| 6129825 | Electrochemical gas sensor A simple, reliable, and leak-proof electrochemical sensor for detection of toxic gases. The sensor comprises a housing having an electrochemical gas sensor cell with an electrolyte and first and second electrodes bonded to conductive plastic. Each of the ... | 10/10/2000 |
| 6123827 | Method for calibrating sensors used in diagnostic testing A method is disclosed for reliably calibrating a sensor used in diagnostic sensing of a predetermined parameter, e.g., CO2 partial pressure, O2 partial pressure, or pH, of a solution such as blood, the method compensating for expecte... | 09/26/2000 |
| 6099708 | Three-electrode electrochemical gas sensor A simple, reliable, and leak-proof three-electrode electrochemical sensor for detection of toxic gases. The sensor comprises a housing having an electrochemical gas sensor cell with an electrolyte and sensing, counter and reference electrodes bonded to co... | 08/08/2000 |
| 6099707 | Apparatus for sensing oxygen concentration An apparatus and method for sensing a concentration of oxygen in a flow of gas in a breathing circuit for a patient. A biasing voltage is provided across a zinc-air cell so that the zinc-air cell produces a current having a magnitude, wherein the magnitud... | 08/08/2000 |
| 6090267 | Methods and apparatus for quantitative analysis of a sample Methods for determining the amount of volatile electrolyte present in an aqueous liquid sample comprise transferring the electrolyte from the aqueous liquid sample to an absorber solution across a gas-permeable membrane which is non-passable to the aqueou... | 07/18/2000 |
| 6083367 | Oxygen electrode and its manufacture An oxygen electrode having: an electrode substrate; a first electrode and a first lead wire formed on the electrode substrate; an insulating layer formed on the electrode substrate covering the first lead wire; a second electrode and a second lead wire fo... | 07/04/2000 |
| 6066249 | Method for calibrating an instrument for measuring electrolytes and metabolites by analysis of blood gases A method for calibrating an instrument for the analysis of blood gases which possesses ion-sensitive electrodes and gas-sensitive electrodes and is used for the determination, in a biological fluid, of the concentration of electrolytes and metabolites in ... | 05/23/2000 |
| 6024853 | Electrochemical oxygen sensor An electrochemical oxygen sensor with a measuring electrode, an atmospheric oxygen electrode as a reference electrode, and an auxiliary electrode in an electrolyte is improved such that a stable measured signal is obtained even during changes in the posit... | 02/15/2000 |
