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 |
| 8083914 | Electrochemical gas sensor An electrochemical gas sensor is disclosed which comprises a gas sensing electrode and a counter electrode disposed within a housing, the housing having an aperture for gas ingress, the gas sensing electrode and counter electrode being separated by a region containi... | 12/27/2011 |
| 8002957 | Sensor apparatus for measuring and detecting acetylene and hydrogen dissolved in a fluid A fuel cell sensor is provided for detecting the presence of acetylene and hydrogen in a fluid. The sensor includes a sensing element having first and second gas diffusing electrodes spaced from one another. The first gas diffusing electrode can be used for sensing ... | 08/23/2011 |
| 7909971 | Microfluidic electrochemical reactors A microfluidic electrochemical reactor includes an electrode and one or more microfluidic channels on the electrode, where the microfluidic channels are covered with a membrane containing a gas permeable polymer. The distance between the electrode and the membrane i... | 03/22/2011 |
| 7790006 | Free chlorine sensor A free chlorine measurement system and sensor are provided. In accordance with one aspect of the invention, the sensor has a porous working electrode disposed in an electrolyte proximate a porous membrane. The membrane allows free chlorine therethrough where it is r... | 09/07/2010 |
| 7601250 | Hybrid film type sensor A miniaturized gas sensor comprised of thick- or thin-film type electrodes, on a non-conductive supportive substrate, and in contact with a solid ionomer electrolyte, for the detection of toxic gases, i.e., carbon monoxide, and other oxidizable or reducible gases an... | 10/13/2009 |
| 7393505 | Proton conductor gas sensor A proton conductor gas sensor whose durability at high temperature is enhanced by using gel not converted to sol even at high temperature in a water reservoir. Fine particles of silica are gelled by adding water thereto and agitating the mixture under shear force. T... | 07/01/2008 |
| 7381314 | Liquid electrochemical gas sensor An aqueous solution of a Na salt of a phenol sulfonic acid polymer as a liquid electrolyte is held in a separator of a liquid electrochemical gas sensor. A sensing electrode and a counter electrode are connected to the separator to detect CO at a range from about âˆ... | 06/03/2008 |
| 7378008 | Liquid electrochemical gas sensor Water is stored in a metal can, and water vapor is supplied to a separator through an opening in a washer. The separator is an alkali metal salt in a sulfonated synthetic resin membrane, and KOH aqueous solution is used as the electrolyte, and the sensing electrode ... | 05/27/2008 |
| 7316768 | Gas sensor and method of manufacture A gas sensor comprises an electrically conductive housing including a shelf member and a chamber containing an electrolyte. A conductive cathode mounted on the shelf member has a plurality of holes therein and a conductive tail element. A gas permeable membrane over... | 01/08/2008 |
| 7279081 | Electrochemical sensor Electrolytic solution which contains sulfuric acid and is stored in an electrolytic solution storage 2 of a case 3 is caused to be retained in an electrolytic solution retainer 25. A reference electrode 18 and a counter electrode 19 | 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 |
| 7179355 | Electrochemical cell Disclosed is an electrochemical sensor for measuring carbon monoxide in a gas sample, the sensor comprising a working electrode including a working electrode catalyst, and a diffusion restriction means for restricting the diffusion of the gas sample to the working e... | 02/20/2007 |
| 7109563 | Films deposited at glancing incidence for multilevel metallization Systems, devices and methods are provided to improve performance of integrated circuits by providing a low-k insulator. One aspect is an integrated circuit insulator structure that includes a vapor-deposited dielectric material. The dielectric material has a predete... | 09/19/2006 |
| 7109853 | System for detecting and releasing a person locked in the trunk of a vehicle A vehicle safety system automatically detects the presence of a person sealed in the trunk of an automobile by sensing the CO2 respiration of the person. Visible, audio and radio alarms are generated in response to the detection of a person in the trunk. ... | 09/19/2006 |
| 7090755 | Gas detecting device with self-diagnosis for electrochemical gas sensor A test signal is applied in parallel with an electrochemical gas sensor for about ten seconds, while an amplifying circuit is turned off. After turning off the test signal, the amplifying circuit is turned on. If the gas sensor outputs an waveform of a predetermined... | 08/15/2006 |
| 7077938 | Electrochemical gas sensor The present invention relates to an electrochemical gas sensor that includes a first planar substrate having at least one planar electrode formed thereon, thereby forming a first electrode assembly, and a housing defining a reservoir which, in use, contains liquid e... | 07/18/2006 |
| 7033482 | Self-diagnostic method for electrochemical gas sensor and gas detecting device An electrochemical gas sensor is self-diagnosed on the basis of an output waveform that is generated when a power source of said gas sensor is turned on after said power source has been turned off for a short time and an output waveform that is generated when said p... | 04/25/2006 |
| 7022213 | Gas sensor and its method of manufacture The invention relates to a gas sensor and its method of manufacture. Electrochemical gas sensors usually comprise an external housing, which acts as a reservoir for electrolyte; a wick to keep electrodes wetted with the electrolyte and external electrical ter... | 04/04/2006 |
| RE38931 | Methods for controlling and/or measuring additive concentration in an electroplating bath A method for measuring a target constituent of an electroplating solution using an electroanalytical technique is set forth in which the electroplating solution includes one or more constituents whose by-products skew an initial electrical response to an energy inpu... | 01/10/2006 |
| 6936147 | Hybrid film type sensor A miniaturized gas sensor comprised of thick- or thin-film type electrodes, on a non-conductive supportive substrate, and in contact with a solid ionomer electrolyte, for the detection of toxic gases, i.e., carbon monoxide, and other oxidizable or reducible gases an... | 08/30/2005 |
| 6908538 | Electrochemical gas sensor having a porous electrolyte The invention relates to an electrochemical gas sensor having improved response time and sensitivity. The electrochemical gas sensor includes a substrate for providing a surface upon which an electrode may be placed, a first electrode placed on the surface, a thin f... | 06/21/2005 |
| 6764582 | Hydrogen sensor A gas sensor suitable for measuring hydrogen concentration, including a proton conductive layer (1); a first electrode (3) and a second electrode (5) provided on the proton conductive layer (1); a gas diffusion-limiting inlet (19) ... | 07/20/2004 |
| 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 |
| 6746587 | Electrochemical gas sensor An electrochemical gas sensor comprises: a working electrode for exposure to a gas to be sensed; a counter electrode having an outer periphery; a reservoir for electrolyte; wick means providing a path for electrolyte to pass from the reservoir, around a first part o... | 06/08/2004 |
| 6666963 | Oxygen sensor A compact, long-lived oxygen sensor having an aqueous electrolyte and three gas diffusion electrodes, a working electrode, a reference electrode and a counter electrode. A porous, hydrophobic means is employed in conjunction with the counter electrode to ... | 12/23/2003 |
| 6656335 | Micro-fuel cell sensor apparatus An apparatus for measuring partial hydrogen pressure in a gas stream is described. The apparatus includes a housing with micro-fuel cell sensor disposed therein. The sensor includes a sensing element having first and second gas diffusing electrodes spaced... | 12/02/2003 |
| 6638407 | Electrochemical gas sensor with gas communication means An electrochemical sensor having electrolyte, at least two electrodes and an electrolyte reservoir in a housing. The sensor has a hydrophobic gas communication means between said electrodes, electrolyte reservoir and ambient atmosphere. An electrochemical... | 10/28/2003 |
| 6635160 | Gas sensor The invention relates to gas sensors, particularly electrochemical gas sensors. The reliability of such gas sensors has been ascertained by regular tests, which involve exposing a sensor to a gas for test or calibration purposes. However, it has been diff... | 10/21/2003 |
| 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 |
| 6584827 | Electrochemical gas sensor with diamond electrode An electrochemical gas sensor for detecting a specific gas being measured with a plurality of electrodes (21, 3, 4), an electrolyte (7) and a gas-permeable membrane (9) has a reduced cross sensitivity with respect to interfering gases, a short response ti... | 07/01/2003 |
| 6579433 | Electrochemical measuring cell for detecting hydrocyanic acid An electrochemical measuring cell for detecting hydrocyanic acid is improved in such a manner that a stable measurement signal is provided after a short time. The measuring cell includes a measuring electrode (1) of sintered gold and a counter electrode (... | 06/17/2003 |
| 6566894 | Process and device for detecting oxidizable and/or reducible gases in air A device and method for detecting oxidizable and/or reducible gases in the air for controlling ventilation plants in buildings or motor vehicles and for monitoring combustion processes or waste gas analysis by a capacitance sensor that detects change in s... | 05/20/2003 |
| 6506296 | Micro-fuel cell sensor apparatus and method for modeling the sensor response time An apparatus for measuring hydrogen content and partial hydrogen pressure in gas streams and a method of modeling the sensor based on the characteristics of the sensor. The apparatus includes a housing with micro-fuel cell sensor disposed therein. The sen... | 01/14/2003 |
| 6468407 | NOx reduction sensor coating A sensor is disclosed that comprises an electrolyte disposed between and in intimate contact with a sensing electrode and a reference electrode. A protective coating is disposed on the protective layer adjacent to the sensing electrode. The protective coa... | 10/22/2002 |
| 6436257 | Means for detecting and measuring the concentration of acetylene dissolved in a fluid A fuel cell for generating a current in response to the presence of acetylene in a fluid. The fuel cell comprises first and second gas porous electrode means, and acidic electrolyte means interconnecting the first and second electrode means for facilitati... | 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 |
| 6325979 | Device for gas-sensoring electrodes A sensing element, in particular for an electrochemical sensor for determining gas concentrations, having at least one three-dimensional electrode arrangement, applied on a support plate and forming trenches of a depth for measuring changes in capacitance... | 12/04/2001 |
| 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 |
| 6251244 | Electrochemical measuring cell for detecting hydride gases The invention is directed to an electrochemical measuring cell for detecting hydride gases, preferably arsine and phosphine. The measuring cell includes at least one working electrode (3) made of a catalytically inactive material and a reference electrode... | 06/26/2001 |
| 6251243 | Gas detecting apparatus having condition monitoring means An operational amplifier (34) has its inverting input connected to a electrochemical gas sensor (38) for amplifying the current produced thereby in response to presence of a predetermined gas. In order to determine whether a sensor (38) is indeed present ... | 06/26/2001 |
