Celebrity Inventors
Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8052863 | Gas sensor control apparatus designed to ensure accuracy of measurement in gas sensor The gas sensor control apparatus develops a first voltage based on a first reference voltage at a negative terminal of a gas sensor device through a resistor and a second voltage based on a second reference voltage at a positive terminal of the gas sensor device. A ... | 11/08/2011 |
| 8052862 | Limiting current type oxygen sensor and method of sensing and measuring oxygen concentrations using the same A limiting current type oxygen sensor having a gas diffusion mechanism comprising a gas diffusion bore and an internal space communicating with the gas diffusion bore for supplying a diffusion-rate-determined gas. The gas diffusion mechanism may be configured such t... | 11/08/2011 |
| 7862703 | Diagnostic and control methods for internally calibrated oxygen sensor A method for pumping a sealed internal reference chamber of a solid electrolyte oxygen sensor, having an internal electrode and an external electrode, during a dynamically controlled, null balancing, calibration process, the method including: initializing a set of p... | 01/04/2011 |
| 7850840 | Method of diagnosing malfunction in gas concentration detecting unit and malfunction diagnostic apparatus thereof To provide a malfunction diagnosing method and apparatus capable of reliably determining a malfunction even where the malfunction occurs in a common wire connecting a gas sensor and a control circuit for driving it. In a gas concentration measurement unit 1 h... | 12/14/2010 |
| 7628907 | Gas sensor A gas sensor is provided for detecting one or more gases in a gas sample. The gas sensor includes a substrate, a solid electrolyte layer including lanthanum oxide for sensing carbon dioxide, a heating element thermally coupled to the solid electrolyte layer, and a c... | 12/08/2009 |
| 7384524 | Detection of carbon monoxide in hydrogen-based gas streams The present invention relates to a sensor for and a method of detecting carbon monoxide in gas streams containing hydrogen. The sensor acts as a fuel cell and is comprised of a centrally placed membrane electrode assembly upon each side of which is positioned a curr... | 06/10/2008 |
| 7338592 | Diagnostic and control methods for internally calibrated oxygen sensor A set of methods controls the pumping action of and provides leak checking of a solid electrolyte oxygen sensor having internal and external electrodes. A first method performs a leak check on the sensor by forcing the sensor internal reference chamber to an evacuat... | 03/04/2008 |
| 7306712 | Gas sensor and method for measuring gas concentration using the same This invention provides a gas sensor including a proton-conductive polymer electrolyte layer and a method for measuring gas concentration, that are capable of measuring gas concentration at high accuracy notwithstanding the presence of water vapor. ... | 12/11/2007 |
| 7279080 | Gas sensors This invention provides an assembly comprising a sensing electrode and a counter electrode in contact with a membrane body formed from a solid polymer electrolyte system comprising a fluorinated polymer matrix and a charge carrying component which is dispersed in th... | 10/09/2007 |
| 7276912 | Method for the operation of an analytical circuit for an electromechanical cell The invention proposes a method for operating an evaluation circuit for an electrochemical cell wherein the evaluation circuit is switched on for a first time period and is switched off for a second time period. The ratio between the first and the second time period... | 10/02/2007 |
| 7258773 | Solid polymer electrolyte oxygen sensor An oxygen sensor includes a solid polymer electrolyte, e.g., on an acid treated Nafion membrane and uses a diffusion-limited fuel cell type reactions. The sensor avoids electrolyte leakage and avoids consumption of electrodes. In different configurations, a counter ... | 08/21/2007 |
| 7241477 | Methods of treating electrodes and gas sensors comprising the electrodes A method for forming an electrode comprises: combining a platinum precursor with a gold precursor to form an electrode ink; forming the electrode ink into an electrode precursor; firing the electrode precursor to form the electrode; treating the electrode in an envi... | 07/10/2007 |
| 7175753 | Process and device for monitoring the hydrogen concentration A process and a device are provided for monitoring the hydrogen concentration in a gas with at least one device, which comprises an electrochemical gas sensor and a bipotentiostat, e.g., for use in internal combustion engines with hydrogen, in fuel cells and in the ... | 02/13/2007 |
| 7160435 | Gas sensor and method for controlling the same Disclosed is a gas sensor for controlling a concentration of oxygen and/or measuring NOx by allowing a current to flow through an ion-conductive member for conducting oxygen ion, by the aid of a current supply circuit, wherein the current, which is outputted from th... | 01/09/2007 |
| 7156976 | Method for detecting and localizing leaks and suitable device for carrying out the method The invention relates to a method and a device for detecting leaks in the wall of a test object, container or similar, by measuring and evaluating changes that occur in a partial gas pressure. The invention aims to simplify the detection of leaks. To this end, chang... | 01/02/2007 |
| 7152494 | Method of testing A method of testing a system including a plurality of modules, each of which in use, produces from an air supply, a product gas which is one of oxygen gas and oxygen enriched gas, the method including providing to an inlet to at least one of the modules, when the mo... | 12/26/2006 |
| 7117099 | Wide band lambda probe having improved starting behaviour In a method and a control device for operating a broadband lambda sensor, the oxygen concentration of an exhaust gas is determined based on a comparison of a Nernst voltage with a reference voltage having a nominal value; a pump current is injected into a cavity of ... | 10/03/2006 |
| 7059121 | System for providing assistance in regenerating a NOx trap A system for providing assistance in regenerating a storage/destorage NOx trap integrated in an exhaust system of a motor vehicle engine, comprising means for controlling the operation of means for injecting fuel into the cylinders of the engine to cause the engine... | 06/13/2006 |
| 7038459 | Oil deterioration detection apparatus An oil deterioration detection apparatus includes a sensor, an evaluation circuit, and a malfunction detecting circuit. The evaluation circuit has a determination circuit. The malfunction detecting circuit has a resistor and a switch. The evaluation circuit evaluate... | 05/02/2006 |
| 7018673 | Oxygen sensor and emission control system An emission control system is disclosed for determining a concentration of oxygen in a flow of gas which has a sensor. The sensor has a diffusion barrier, an electrolyte material, and a counter-electrode. The counter-electrode is configured to support the diffusion ... | 03/28/2006 |
| 6911140 | Gas sensor element and method for determining the concentration of a gas component in a gas mixture A sensor element and a method for determining the concentration of at least one gas component, especially of a nitrogen oxide, in a gas, mixture. For this purpose, the sensor element includes at least one first electrode exposed to the gas component to be analyzed a... | 06/28/2005 |
| 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 |
| 6797151 | CO sensor and method of measuring CO concentration A CO sensor and a CO-concentration measurement method which enables accurate measurement of CO concentration irrespective of the hydrogen concentration of a gas under measurement. By applying a first predetermined voltage between first and second electrodes 7 | 09/28/2004 |
| 6695964 | Method and apparatus for measuring NOx gas concentration Method and sensor for measuring accurate measurement of NOx concentration in an exhaust gas containing O2,H2 O, CO2 and NOx and a NOx gas concentration sensor. A first oxygen pump cell sufficiently pumps out oxygen in a me... | 02/24/2004 |
| 6623618 | Gas sensor and method for controlling the same Disclosed is a gas sensor for controlling a concentration of oxygen and/or measuring NOx by allowing a current to flow through an ion-conductive member for conducting oxygen ion, by the aid of a current supply circuit, wherein the current, which is output... | 09/23/2003 |
| 6579435 | Gas sensor A gas sensor is disclosed comprising an oxygen pump cell having at least one exterior pump electrode and at least one interior pump electrode disposed on opposite sides of a first solid electrolyte layer. An emf cell having a first and second emf electrod... | 06/17/2003 |
| 6495027 | Electrochemical gas sensor and method for determining gas components An electrochemical gas sensor and a method for determining the concentration of gaseous components in a gas mixture, particularly of NOx in exhaust gases of internal combustion engines. The gas sensor includes a first measuring-gas compartment ... | 12/17/2002 |
| 6488836 | CO gas sensor and method of using same A CO gas sensor is equipped with a detecting unit in which a solid electrolyte membrane is held between a detection electrode and a counter electrode, and a voltage applying unit which applies voltage between the detection electrode and the counter electr... | 12/03/2002 |
| 6454931 | Method for measuring component of a gaseous emission A modified universal exhaust gas oxygen sensor, referred to herein as a CEGA sensor, is provided which can be used to measure the concentration of a variety of components of a gaseous fuel emission including CO, CO2, O2, H2 | 09/24/2002 |
| 6444114 | Method for measuring component of a gaseous emission A modified universal exhaust gas oxygen sensor, referred to herein as a CEGA sensor, is provided which can be used to measure the concentration of a variety of components of a gaseous fuel emission including CO, CO2, O2, H2 | 09/03/2002 |
| 6436277 | Electrochemical sensor An electrochemical sensor for ascertaining a gas concentration of a measuring gas includes an electrochemical element, including a first solid electrolyte body having an electrochemical pump cell and a first and a second electrode, and having a gas compar... | 08/20/2002 |
| 6432289 | Oxygen concentration detector An oxygen concentration detector comprises a solid electrolyte 21, a sensing element 2 which consists of the solid electrolyte 21 coated on the surface with an outer electrode 23, a heater 3 provided inside the solid electrolyte 21, and a protecting cover... | 08/13/2002 |
| 6365022 | Gas sensor A gas sensor comprising an electrolytic cell having detecting and reference electrodes connected by a solid electrolyte. In a first embodiment, both electrodes comprise Ag2 CO3 and Ag4 RbI5, and the electrolyte ... | 04/02/2002 |
| 6334946 | Method of stabilizing pump current in gas sensor A method of stabilizing pump current in a gas sensor through suppression of oscillations of the pump current which result from pulsations of measured gas is provided. The gas sensor includes an oxygen pump element, an oxygen concentration cell element and... | 01/01/2002 |
| 6270651 | Gas component sensor The present invention is an electrolyte composition in bulk, thick film and sputtered thin film form forming with different metal sensing and reference electrodes a highly stable gas component concentration sensor.... | 08/07/2001 |
| 6241873 | Sold electrolytes, carbon dioxide sensors and method for correcting the output of sensors The present invention provides a solid electrolyte having high stability against humidity at room temperature and a carbon dioxide sensor which not only can have sufficient sensitivity but also has excellent responsiveness at room temperature and which is... | 06/05/2001 |
| 6203678 | Solid electrolyte sensor for measuring gaseous anhydrides A galvanic solid electrolyte sensor for measuring gaseous anhydrides includes a ceramic solid electrolyte that has a material that conducts electrons, a measuring electrode that includes a pure or doped alkaline or alkaline earth salt and a reference elec... | 03/20/2001 |
| 6200458 | Method and arrangement for detecting the oxygen content in a gas The invention is directed to a method for detecting the oxygen content in a gas to be measured. At least one concentration cell operating in accordance with the Nernst principle is provided. The concentration cell includes a measuring electrode communicat... | 03/13/2001 |
| 6179992 | Gas sensor The invention relates to a galvanic cell comprising a) an oxygen-ion-conducting solid electrolyte, b) a gas-sensitive material which contains at least one salt having the structural formula Mem (XOn)p, where Me is a metal, X st... | 01/30/2001 |
| 6177001 | Internally calibrated oxygen sensor, method and system A zirconium oxide shell forms a chamber of fixed volume, and a controller monitors voltage across the shell indicative of difference between inside and outside oxygen levels, applying a signal to pump oxygen. Pumping is effected to empty the chamber, to d... | 01/23/2001 |
