Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8172997 | Cerium oxide nanoparticle regenerative free radical sensor An electrochemical sensor system for sensing free radicals or materials which generate free radicals in solution includes a working electrode coated with a plurality of cerium oxide nanoparticles and a counter electrode. A solution to be analyzed provides electrolyt... | 05/08/2012 |
| 8152977 | Multichannel potentiostat having an adjustable counter-electrode potential The multichannel potentiostat comprises a reference terminal, a counter-electrode terminal, and at least two working terminals, respectively designed to be connected to a reference electrode, a counter-electrode and at least two working electrodes of an electrochemi... | 04/10/2012 |
| 8133369 | Potentiostat circuit A potentiostat is provided for a biosensor circuit and permits sequential and simultaneous measurements to be performed at different cells across a matrix of biosensing devices. Accordingly, a potentiostat comprises a first differential amplifier for receiving a sca... | 03/13/2012 |
| 8092663 | Gas sensor control device A gas sensor control device is disclosed as including a sensor cell having a negative terminal, to which a current-voltage converter is connected, and a differential amplifier is connected to the current-voltage converter to provide a current measured result applied... | 01/10/2012 |
| 8066858 | Analyte sensor with insertion monitor, and methods A sensor, and methods of making, for determining the concentration of an analyte, such as glucose or lactate, in a biological fluid such as blood or serum, using techniques such as coulometry, amperometry, and potentiometry. The sensor includes a working electrode a... | 11/29/2011 |
| 8066859 | Electrochemical carbon monoxide sensor supervision A sensor supervision system for periodically providing a test to accesses the status of a gas detection sensor, such as a carbon monoxide (CO) sensor, is provided. To access the status of the CO sensor, a processor provides a voltage to the sensor supervision system... | 11/29/2011 |
| 7981264 | Drift calibration method and device for the potentiometric sensor The present invention discloses a method and an apparatus of the drift calibration of sensors. The method includes shifting the sensing signal and differential technology to remove the drift signal by time during a long measuring. The apparatus includes two voltage ... | 07/19/2011 |
| 7976689 | Gas sensor The invention relates to a gas sensor for determining the oxygen concentration in a gas mixture, especially in the exhaust gas of internal combustion engines. Said gas sensor comprises a pump cell having an outer pump electrode, exposed to the gas mixture, and an in... | 07/12/2011 |
| 7959777 | Devices, systems and methods for testing gas sensors and correcting gas sensor output A method of adjusting the output of an electrochemical sensor including a working electrode and a counter electrode, includes: electronically causing a current flow between the working electrode and the counter electrode via an electrolyte without introducing a test... | 06/14/2011 |
| 7943023 | Programmable multiplexed active biologic array The present invention is directed to devices and methods for carrying out and/or monitoring biological reactions in response to electrical stimuli. A programmable multiplexed active biologic array includes an array of electrodes coupled to sample-and-hold circuits. ... | 05/17/2011 |
| 7914655 | Potentiostatic circuit arrangement on a biosensor for digitisation of the measured current A circuit arrangement, an electrochemical sensor, a sensor arrangement, and a method for processing a current signal provided by a sensor electrode are disclosed. The circuit arrangement includes a sensor electrode, a first circuit unit, electrically coupled to the ... | 03/29/2011 |
| 7909970 | Controller for gas concentration sensor An oxygen sensor is employed for determining whether the exhaust air-fuel ratio is rich or lean. A voltage is applied to the oxygen sensor at device impedance calculation intervals to calculate device impedance. After device impedance calculation, a reverse voltage ... | 03/22/2011 |
| 7862697 | Sensor control device A sensor control device, and a gas sensor and sensor control device for applying a voltage to a sensor element of the gas sensor including an oxygen ion conductor and a pair of electrodes formed on the oxygen ion conductor of the gas sensor. The sensor control devic... | 01/04/2011 |
| 7846313 | Controller for gas concentration sensor An oxygen sensor is employed for determining whether the exhaust air-fuel ratio is rich or lean. A voltage is applied to the oxygen sensor at device impedance calculation intervals to calculate device impedance. After device impedance calculation, a reverse voltage ... | 12/07/2010 |
| 7842174 | Electrochemical chip with miniaturized sensor array A handheld sensor device is provided for measuring an ion concentration in a solution. The solution is in an electrochemical cell that includes a counter electrode, a working electrode, and a reference electrode. The sensor includes a control amplifier configured to... | 11/30/2010 |
| 7767067 | System for maintaining pH and sanitizing agent levels of water in a water feature A system automatically maintains at least one of a pH level and a sanitizing agent level of water in a water feature. The system includes a sensor assembly responsive to at least one of a pH level of the water and a sanitizing agent level of the water. The system fu... | 08/03/2010 |
| 7704357 | Potentiometric sensor A potentiometric sensor, especially a pH-sensor or redox-sensor, includes: an elementary sensor for registering a potentiometric parameter, especially a pH-value or a redox potential; and an interface for issuing a potentiometric-parameter-dependent signal to a supe... | 04/27/2010 |
| 7686930 | Secure meter A compact multiparameter instrument for electrochemical measurements is described. The instrument facilitates rapid engagement and disengagement of a variety of sensor elements in such a manner as to prevent accidental mismatch of sensor elements and sensor input po... | 03/30/2010 |
| 7655121 | Gas sensor interface device and gas sensor system An interface device for a gas sensor includes a detection resistor having first and second ends to generate voltages by a current output of the gas sensor, a differential amplifier having first and second input terminals to receive the voltages of the first and seco... | 02/02/2010 |
| 7641777 | Biological testing system A connector for establishing electrical connection between a testing device and a test strip with a biological fluid thereon includes a contact pad on the test strip, and one or more contact wires in the testing device. When the strip is inserted into the testing de... | 01/05/2010 |
| 7608176 | Gas concentration detecting apparatus The present invention relates a gas concentration detecting apparatus capable of appropriately making a decision on activation of each of a pump cell, a monitor cell and a sensor cell of its gas concentration sensor. In the apparatus, a control circuit outputs an ox... | 10/27/2009 |
| 7597789 | Oxidation-reduction potentiometer An oxidation-reduction potentiometer immerses a working electrode and a reference electrode in a reference liquid, measures an interelectrode voltage between the above electrodes when an impedance reducing circuit is unconnected and an interelectrode voltage between... | 10/06/2009 |
| 7481913 | High-resolution gas concentration measuring apparatus A gas concentration measuring apparatus for use in air-fuel ratio control of motor vehicle engines is provided which includes a laminated sensor element and a sensor circuit. The sensor circuit includes a current-measuring resistor, at least one amplifier, and A/D c... | 01/27/2009 |
| 7473340 | Circuit configuration for operating a linear exhaust-gas probe A linear exhaust-gas probe has a measuring cell for measuring a gas concentration in a measuring chamber by determining a measuring-cell voltage, and a pump cell for pumping gas by way of a pump current. A circuit configuration for operating the prove has a comparat... | 01/06/2009 |
| 7427346 | Electrochemical drive circuitry and method An electrochemical drive circuitry and method, such as may be employed in electroplating bath chemical monitoring. A microcontroller can be utilized to selectively apply galvanostatic or potentiostatic conditions on the electrochemical cell, for measurement of respo... | 09/23/2008 |
| 7416650 | Gas concentration measuring apparatus In a gas concentration measuring apparatus, a measurement substrate is provided. A conductive pattern portion is formed in the measurement substrate. The conductive pattern portion includes a signal input pattern constituting the signal processing circuit and electr... | 08/26/2008 |
| 7393441 | Controller for gas concentration sensor An oxygen sensor is employed for determining whether the exhaust air-fuel ratio is rich or lean. A voltage is applied to the oxygen sensor at device impedance calculation intervals to calculate device impedance. After device impedance calculation, a reverse voltage ... | 07/01/2008 |
| 7361257 | Electrochemical screening system Devices and methods for evaluating an electrochemical reaction are disclosed. A device includes an electrochemical cell having a cavity for containing a liquidus electrolyte, a first working electrode having at least one electrolytic surface at least partially withi... | 04/22/2008 |
| 7351323 | Quantitative analyzing method and quantitative analyzer using sensor A quantitative analyzing method is provided for electrochemically measuring the concentration of a substance in a sample liquid using a sensor including a reagent layer (30) which contains a reagent for reacting with the substance and to which (30) the... | 04/01/2008 |
| 7335294 | Integrated lancing and measurement device and analyte measuring methods An integrated lancing and measurement device is provided comprising a sensor designed to determine the amount and/or concentration of analyte in a biological fluid having a volume of less than about 1 μL. A piercing member is adapted to pierce and retract from a si... | 02/26/2008 |
| 7326488 | Diffusion film, electrode having the diffusion film, and process for producing diffusion film A diffusion membrane contains uncalcined polytetrafluoroethylene (PTFE), calcined PTFE and a conductive substance. An electrode has the diffusion layer (membrane) and a catalyst layer disposed thereon. A process for producing diffusion membranes comprises dispersing... | 02/05/2008 |
| 7323140 | Moving microdroplets in a microfluidic device The present invention relates to a system and method for moving samples, such as fluid, within a microfluidic system using a plurality of gas actuators for applying pressure at different locations within the microfluidic. The system includes a substrate which forms ... | 01/29/2008 |
| 7323141 | Button layout for a testing instrument A sensor dispensing instrument adapted to handle a sensor pack containing a plurality of sensors and to perform a test using one of the sensors. The sensor dispensing instrument includes an outer housing and display disposed on the outer housing for showing items. T... | 01/29/2008 |
| 7321287 | Gas sensor According to one embodiment, the gas sensor includes a porous plate-like sintered body comprising trisilicon tetranitride needle crystals; two first catalyst metal thin films and one second catalyst metal thin film, formed on one surface of the plate-like sintered b... | 01/22/2008 |
| 7316767 | Gas sensing element Provided is a multilayer gas sensing element having a high measurement accuracy and less susceptible to a leakage current. The element comprises an oxygen pump cell for adjusting an oxygen concentration in a measured gas chamber, a sensor cell for detecting a specif... | 01/08/2008 |
| 7316700 | Self optimizing lancing device with adaptation means to temporal variations in cutaneous properties A lancing device, an embodiment of which controls the advancement and retraction of a lancet by monitoring the position of the lancet in conjunction with a lancet controller which incorporates a feedback loop for modulating the lancet driver to follow a predetermine... | 01/08/2008 |
| 7314597 | Chemical agent detection A chemical agent detector with a lesser demand sensor, a greater demand sensor, an inlet; and a manifold; and methods associated therewith. The manifold is positioned between the inlet and the sensors, and includes a first intake associated with the lesser demand se... | 01/01/2008 |
| 7312087 | Devices and methods for biochip multiplexing The invention is directed to devices and methods that allow for simultaneous multiple biochip analysis. The method of analyzing the plurality of biochips includes inserting a first biochp into a first station of an analysis device, inserting a second biochip into a ... | 12/25/2007 |
| 7297242 | Self-adjusting electrochemical sensor A gas detector with a compensated electrochemical sensor exhibits altered sensitivity in response to decreasing stochastic noise in an output thereof. A gain parameter can be adjusted to alter sensitivity. A life-time estimate can be made based on sensitivity. ... | 11/20/2007 |
| 7297241 | Method and a device for monitoring a medical microsample in the flow measuring cell of an analyzer The invention relates to a method and device for the monitoring of a medical microsample in the flow measuring cell of an analyzer with regard to position and absence of bubbles by means of an alternating voltage applied to the measuring cell, the measuring cell bei... | 11/20/2007 |
