Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7918989 | Gas sensor and method thereof A gas sensor and method thereof are provided. The example gas sensor may include first and second electrodes formed on a substrate, a carbon nanotube connecting the first and second electrodes on the substrate, a light source disposed above the carbon nanotube and a... | 04/05/2011 |
| 7648624 | Oxygen sensor An oxygen sensor has a laminated body with a fluid sample inlet end and an electrical contact end, a fluid sample inlet, a substantially flat test chamber communicating with the fluid sample inlet where the test chamber is adapted to collect a fluid sample through t... | 01/19/2010 |
| 7413645 | Devices, systems and methods for testing gas sensors and correcting gas sensor output A method of adjusting the output of an electrochemical sensor includes the steps of: simulating the presence of an analyte gas electronically; measuring a response of the sensor to the electronic simulation; and adjusting the output of the sensor as a function of th... | 08/19/2008 |
| 7317296 | Electric motor The electric motor is equipped with an electronic control, for example in the form of a frequency converter (2) and comprises at least one Seebeck element (6) whose one side is connected to the motor (1) in a heat-conducting manner and whose oth... | 01/08/2008 |
| 7301223 | High temperature electronic devices In at least some embodiments, electronic devices suitable for use at temperatures in excess of 200 C. may comprise an integrated circuit fabricated on a silicon carbide substrate, and a thick passivation layer. In other embodiments, electronic devices suitable for u... | 11/27/2007 |
| 7264778 | Carbon monoxide sensor and method of use thereof Carbon monoxide sensors suitable for use in hydrogen feed streams and methods of use thereof are disclosed. The sensors are palladium metal/insulator/semiconductor (Pd-MIS) sensors which may possess a gate metal layer having uniform, Type 1, or non-uniform, Type 2, ... | 09/04/2007 |
| 7208077 | Sensor arrangement with electrically controllable arrays An electric sensor array which is provided with several sensor positions that each have at least two microelectrodes. Molecular substances can be detected electrochemically and charged molecules can be transported or handled using the array. Measuring procedures can... | 04/24/2007 |
| 7198606 | Method and apparatus for a multi-use body fluid sampling device with analyte sensing A device for use with a penetrating member driver to penetrate tissue is provided. A plurality of penetrating members are coupled to a single cartridge and are operatively couplable to the penetrating member driver. The penetrating members are movable to extend radi... | 04/03/2007 |
| 7193178 | Method and apparatus for controlling the heating of an oxygen sensor in a motor vehicle Methods and apparatus are provided for controlling the heating of an oxygen sensor in a motor vehicle. The apparatus comprises an oxygen sensor for measuring oxygen levels in exhaust gases of a motor vehicle. The oxygen sensor comprising a heater rod, an outer elect... | 03/20/2007 |
| 7182853 | Redox control/monitoring platform for high throughput screening/drug discovery applications The invention is a redox control and monitoring platform that is to be used in conduction with another detection scheme. The platform includes a portion of an electrochemical control. The electrochemical control can be operated to control and measure the redox envir... | 02/27/2007 |
| 7179988 | Dye sensitized solar cells having foil electrodes A solar cell having foil electrodes. Specifically, a metal foil is implemented to form electrodes providing a reduced electron path from a dye-sensitized semiconductor material to the electrodes. In one embodiment, nanowires extending from the substrate on which the... | 02/20/2007 |
| 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 |
| 7156968 | Electrode comprising material to help stabilize oxide of catalyst for electrochemical sensor An electrode comprises a catalyst and material to help stabilize an oxide of the catalyst. The electrode for one embodiment may be used for an electrochemical sensor or sensor cell. ... | 01/02/2007 |
| 7147761 | Electrochemical sensor An electrode for use in an electrochemical sensor includes a catalyst dispersed within an electrolyte. Preferably, the catalyst is immobilized within a matrix of the electrolyte. In one embodiment, the electrode of the present invention includes at least one catalys... | 12/12/2006 |
| 7122106 | Electrosynthesis of nanofibers and nano-composite films A method for producing an array of oriented nanofibers that involves forming a solution that includes at least one electroactive species. An electrode substrate is brought into contact with the solution. A current density is applied to the electrode substrate that i... | 10/17/2006 |
| 7105907 | Gallium nitride compound semiconductor device having schottky contact A buffer layer, an undoped gallium nitride layer, and an n-type gallium nitride active layer are formed on a sapphire substrate. Ohmic contacts and a Schottky contact are then formed on the n-type gallium nitride active layer as a source contact, a drain contact and... | 09/12/2006 |
| 7090808 | Apparatus for testing sterilization methods and materials Apparatus and method for testing one or more sterilization indicators (e.g., biological indicators or chemical indicators) or other articles by contacting them under controlled sterilization conditions with a flowing antimicrobial gas containing hydrogen peroxide va... | 08/15/2006 |
| 7021082 | Method and apparatus for suppressing oxygen bubble formation in glass melts In the method of making glass a glass melt is formed from starting materials in a melt apparatus, which includes at least one metal part having a metal surface in contact with the glass melt in a first region of the glass melt having a predetermined oxygen partial p... | 04/04/2006 |
| 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 |
| 6996499 | Abnormality detecting device for gas sensor In a device for detecting an abnormality of a gas sensor having a detected cell in which a pair of electrodes are provided on a solid electrolyte material, a microcomputer temporarily inputs a test signal including an alternating current component to a signal line c... | 02/07/2006 |
| 6992494 | Method and apparatus for monitoring the purity and/or quality of steam A method and apparatus for monitoring at least one of steam purity and steam quality for steam used in a decontamination process. A capacitor is exposed to the steam, wherein the steam acts as a dielectric between the plates of the capacitor. Permittivity of the die... | 01/31/2006 |
| 6972083 | Electrochemical method and system for monitoring hydrogen peroxide concentration in slurries Electrochemical monitoring system and method are provided for online determination of hydrogen peroxide concentration in slurries, e.g., a chemical mechanical polishing slurry. The monitoring system includes an electrochemical cell fluidly coupled to receive a slurr... | 12/06/2005 |
| 6960921 | Method and apparatus for real time monitoring of metallic cation concentrations in a solution A method and apparatus for monitoring the concentration of metal cations in a chemical solution. In a preferred embodiment, the chemical solution is a solution for derouging or passivating stainless steel. A capacitive sensor provides data indicative of the concentr... | 11/01/2005 |
| 6953958 | Electronic gain cell based charge sensor A gated metal oxide semiconductor field effect transistor (MOSFET) gain cell is formed with a flow channel for molecule flow. The flow channel is formed under the gate, and between a source and drain of the transistor. The molecule flow modulates a gain of the trans... | 10/11/2005 |
| 6946852 | Method and apparatus for measuring concentration of a chemical component in a gas mixture A chemical concentration detecting system for determining the relative concentration of a chemical component in a gas mixture. The gas mixture may include chemical components that are antimicrobial chemicals, as well as chemical components that are base chemicals, a... | 09/20/2005 |
| 6939037 | Determining the temperature of an exhaust gas sensor by means of calibrated internal resistance measurement For achieving a highest possible measuring accuracy of a circuit for measuring the internal resistance of an exhaust-gas sensor, a method and a circuit for measuring the internal resistance R1 (10) of an electrochemical cell (12) are provided fo... | 09/06/2005 |
| 6939450 | Device having a flow channel A device having a flow channel, wherein at least one flow-terminating interface is used to control the flow of liquid in the flow channel. The flow-terminating interface prevents the flow of the liquid beyond the interface. In one aspect, the invention provides a se... | 09/06/2005 |
| 6936156 | Automated self-calibrating water quality monitoring sensor housing assembly An automated self-calibrating water quality monitoring sensor housing assembly includes a number of ion-selective electrodes combined in a single flow train to provide for the multi constituent analysis of a number of samples without direct intervention by a human o... | 08/30/2005 |
| 6933733 | Method and apparatus for measuring the concentration of hydrogen peroxide in a fluid A method and apparatus for measuring the concentration of hydrogen peroxide in a liquid or gaseous fluid. A capacitor is exposed to the fluid, wherein the fluid acts as the dielectric between the conductors of the capacitor. The permittivity and dielectric constant ... | 08/23/2005 |
| 6930493 | Method and apparatus for monitoring detergent concentration in a decontamination process A method and apparatus for monitoring the concentration of a detergent in a detergent solution. A capacitive sensor is exposed to the detergent solution, and electrical properties of the capacitive sensor are responsive to changes in the concentration of detergent i... | 08/16/2005 |
| 6927582 | Method and apparatus for monitoring the state of a chemical solution for decontamination of chemical and biological warfare agents A method and apparatus for monitoring the state of a chemical solution for neutralization of chemical and biological warfare agents are disclosed. A capacitor is exposed to the chemical solution, wherein the steam acts as a dielectric between the plates of the capac... | 08/09/2005 |
| 6917885 | Method and apparatus for formulating and controlling chemical concentration in a gas mixture A method and apparatus for formulating and controlling concentrations of deactivating chemicals in a gas mixture inside a chamber. The gas mixture may include chemical components that are deactivating chemicals, as well as chemical components that are base chemicals... | 07/12/2005 |
| 6909972 | Method and apparatus for formulating and controlling chemical concentrations in a solution A method and apparatus for formulating and controlling concentrations of deactivating chemicals in a solution inside a chamber. The solution may include chemical components that are deactivating chemicals, as well as chemical components that are base chemicals, acti... | 06/21/2005 |
| 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 |
| 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 |
| 6706160 | Chemical sensor and use thereof A chemical sensor selectively detects an analyte in a solution. The sensor comprises a flow-through chamber, a selective membrane, a transducer, an inlet for a liquid flow containing a recognition element, and an outlet. To detect an analyte in a solution, a recogni... | 03/16/2004 |
| 6652721 | Sensor for determination of O2 concentration in liquids A sensor (1) for measuring O2 concentrations in liquids (2) has a working electrode (3), with a counterelectrode (4) and with a reference electrode (5), wherein the working electrode (3) and the counterelectrode (4) are in contact with the liqu... | 11/25/2003 |
| 6261440 | Interference free biosensor Provided are microparticle forms of carbon, carbon catalysts and carbon-containing electrically conductive materials which are covalently linked to peroxidase. The carbon:peroxidase conjugates are suitable for use as substrates in conventional electrodes.... | 07/17/2001 |
| 6187164 | Method for creating and testing a combinatorial array employing individually addressable electrodes An electrochemical deposition and testing system consisting of individually addressable electrode arrays, a fully automated deposition head, and a parallel screening apparatus is described. The system is capable of synthesizing and screening millions of n... | 02/13/2001 |
| 6129831 | Hydrogen peroxide sensor The sensor electrode has a sensing surface intended to contact a liquid medium for continuous measuring, in combination with a counter electrode and a reference electrode, of the hydrogen peroxide concentration over a concentration range from 0.005 mole/l... | 10/10/2000 |
