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| Number | Title | Issue Date |
| 7416331 | Condensation sensor A measuring device for detecting a humidity and temperature of a window surface including at least one moisture sensor and at least one temperature sensor placed on the window surface, an evaluation unit connected downstream from the moisture and temperature sensors... | 08/26/2008 |
| 7380980 | Detector for detecting state on detection surface The long-side surface of a triangular prism is a detection surface. The distal end portions of coaxial light-emitting/light-receiving optical fiber cables are joined to one short-side surface of the prism. A thermoelectric cooling element is mounted on the other sho... | 06/03/2008 |
| 7368291 | Sulfuryl fluoride fumigation process A process is provided for determining the amount of sulfuryl fluoride in the atmosphere of an enclosed area that has been fumigated with sulfuryl fluoride (SO2F2). This process comprises: (A) sampling said atmosphere of said enclosed area to ob... | 05/06/2008 |
| 7360396 | Gas sensor and fuel cell system and automobile employing the same In a gas sensor, at least three levels of current are supplied to a heating element successively in a step-like manner for a predetermined time period. An arithmetic unit receives both-end voltages of the heating element for the respective current after elapse of th... | 04/22/2008 |
| 7339307 | Sealing arrangement for a piezo actuator of a fuel injector A seal (10) for a piezo-actuator of a fuel injector with terminal posts (12) projecting out of the piezo-actuator and a head arrangement (14) mounted on the piezo-actuator with openings (16) for passage of the terminal posts (12) i... | 03/04/2008 |
| 7257985 | Apparatus and method for real time determination of density and related parameters in manufacturing processes Methods and apparati for measuring entrained gas content. One of the disclosed apparatus embodiments includes a chamber and piping for process fluid, the piping including two different sectors each comprising a density and temperature gauge having a pressure gauge l... | 08/21/2007 |
| 7062968 | Temperature control apparatus for humidity sensor A temperature control apparatus for a humidity sensor is provided for preventing impurities from sticking on a sensor element, while protecting the sensor element from cracking due to the humidity sensor heated by a heater in the presence of condensation, to maintai... | 06/20/2006 |
| 7059170 | Method and apparatus for measuring relative humidity of a mixture A method and apparatus for measuring relative humidity of a mixture that provides a quick response time for thermal lag while affording protection to fragile sensors. In one aspect, the invention is an apparatus comprising: a chamber having a membrane covering an op... | 06/13/2006 |
| 7032448 | Capacitive humidity sensor A capacitive humidity sensor includes a detection portion and a reference portion. The detection portion includes detection electrodes and a moisture sensitive film. The reference portion includes reference electrodes and a moisture permeation film as a capacitance ... | 04/25/2006 |
| 7028530 | Gas detector There is provided a gas detector capable of detecting hydrogen concentration and humidity independently in the environment containing both hydrogen and water vapor. The gas detector comprises a high-temp exothermic detector unit and a low-temp exothermic detector un... | 04/18/2006 |
| 7017388 | Determination of gas-free densities and relative amounts of gases in liquids in manufacturing processes Improved control of continuous processes that handle liquids. Data generated by this invention is used to control gas contents of liquids within optimum ranges, for instance in paper coating processes and in the manufacture of food products (ketchup), personal care ... | 03/28/2006 |
| 6960744 | Electrically tunable on-chip resistor A device having a resistor and a heater disposed proximate to the resistor and capable of raising the temperature of the resistor. The device further includes a dieletric disposed between the heater and the resistor and a tuner electrically coupled to the resistor. ... | 11/01/2005 |
| 6952946 | Method for the gas chromatographic analysis of a sample, and analyzer In a gas chromatograph, an injected sample for analysis (3) is passed through a separation device (5) to separate components present in the sample; at the end of the separation device, selected components are detected by a detector (12) and dete... | 10/11/2005 |
| 6928858 | Apparatus and method for thermal conductivity detection in gas chomatography equipment A thermal conductivity detector includes separate sample gas and reference gas chambers. Each chamber has a gas inlet and a gas outlet and a sensor. The chambers are connected by at least one passageway. For example, a passageway can extend from the sample gas chamb... | 08/16/2005 |
| 6883366 | Tamper resistant vapor sensor method and system A vapor sensor is disclosed, which includes a substrate containing a sensing element, wherein the substrate is located proximate to a sleeve portion which covers and protects the sensing element. The vapor sensor also includes a vapor filter or permeable membrane af... | 04/26/2005 |
| 6836732 | Enhanced vapor containment and monitoring An apparatus and method for ensuring effective and efficient vehicle vapor recovery performance, storage tank system integrity relative to both vapor and liquid containment and for reducing the probability that inaccurate information causes companies to undertake un... | 12/28/2004 |
| 6766680 | Determination of gas solubility, entrained gas content, and true liquid density in manufacturing processes Improved control of continuous processes that handle liquids. Data generated by this invention is used to control gas contents of liquids within optimum ranges, for instance in paper coating processes and in the manufacture of food products (ketchup), personal care ... | 07/27/2004 |
| 6732568 | Sensor probe for measuring temperature and liquid volumetric fraction of a liquid droplet laden hot gas and method of using same A sensor probe and method of use for determining the temperature, velocity, and/or liquid volumetric fraction of gas laden with droplets. In one variation, the probe includes a single heating element used in a well-characterized flow. The heating element is maintain... | 05/11/2004 |
| 6612154 | Systems and methods for monitoring or controlling the ratio of hydrogen to water vapor in metal heat treating atmospheres Systems and methods for monitoring a heat treating atmosphere derive from at least one sensor placed in situ in the atmosphere a process variable, which is indicative of the ratio of gaseous hydrogen H2 (g) to water vapor H2 O(g) in ... | 09/02/2003 |
| 6604406 | Human portable preconcentrator system A preconcentrator system and apparatus suited to human portable use wherein sample potentially containing a target chemical substance is drawn into a chamber and through a pervious screen. The screen is adapted to capture target chemicals and then, upon h... | 08/12/2003 |
| 6439028 | Method and equipment for measuring vapor flux from surfaces A method and equipment for measuring vapor flux from a surface e.g. the rate of water loss from human skin which is useful in the evaluation of the efficiency of the skin/water barrier uses a closed cylinder which is placed with the open end against the s... | 08/27/2002 |
| 6276202 | Device and method for detecting snow and ice A device for detecting snow and ice which has a humidity sensor and an ambient temperature sensor. An evaluator switch is controlled according to a humidity sensor-measured variable, producing a control signal at set humidity values for defrosting a surfa... | 08/21/2001 |
| 6157306 | Humidity sensing system for a storage container A humidity sensing device dimensioned to be received in a humidor for detecting an out of range ambient moisture condition and transmitting a signal to a remote monitor. The sensing device establishes an acceptable range of period for a humidity sensitive... | 12/05/2000 |
| 5959190 | Sensor for measuring the composition of mixtures of hydrogen and oxygen gas A sensor is provided for precisely measuring the composition of mixtures of hydrogen and oxygen gas. The sensor has an active surface, at which hydrogen and oxygen are catalytically converted into water. A transport inhibiting barrier is disposed on the a... | 09/28/1999 |
| 5837884 | Humidity sensor using temperature sensing resistor controlled to be at constant temperature of more than 150° C. A humidity sensor of a heat conduction type which enables a humidity measurement to be produced by a single temperature sensing resistor so as to reduce a change in characteristic depending on a temperature change of the measurement atmosphere and to redu... | 11/17/1998 |
| 5834626 | Colorimetric indicators for breath, air, gas and vapor analyses and method of manufacture Colorimetric indicators for breath, air, gas, & vapor analyses that can be thrown away after a single use, are easy to use, low cost, small, and simple to manufacture for indicating at least volume passed through the colorimetric indicators and may also b... | 11/10/1998 |
| 5807525 | Apparatus and process for multi stage solid phase synthesis of long chained organic molecules An apparatus and process are disclosed for optimizing the repetitive steps in a solid-phase oligonucleotide synthesis by continuous optical scanning of the effluent stream from the reaction module and by computerized processing and implementation of the s... | 09/15/1998 |
| 5773709 | Method and apparatus for thermally inducing circulation of fluid between the interior of a system and a fluid pocket attached thereto A method and apparatus for inducing circulation of a fluid in an interior of a system between such interior and a fluid pocket. The fluid pocket is connected to a fluid access opening of the system for fluid communication between the fluid pocket and the ... | 06/30/1998 |
| 5597953 | Gas moisture sensor and method of producing same A moisture sensor comprising a flat substrate, a moisture sensitive layer formed by spraying, and a tape heater formed by spraying. On a surface of the flat substrate made of monocrystalline silicon, a silicon dioxide film is formed by thermal oxidation, ... | 01/28/1997 |
| 5551283 | Atmosphere measuring device and flow sensor A low-cost and quick-response type gas-density sensing element is free from positioning error of sensing ambient temperature and gas density and can accurately sense the gas flow even if the environmental conditions sharply change. An output voltage V | 09/03/1996 |
| 5467651 | Drive control apparatus for microsensor In the drive control apparatus for microsensor according to the present invention, power is constantly supplied to the microsensor. Also the peripheral humidity is detected, and control is switched between pulse drive control and constantly energized driv... | 11/21/1995 |
| 5402709 | Method and apparatus for detecting steam in a volume of air and a steam generator and a steam cooking oven using such method and such apparatus A method and apparatus are disclosed for detecting the presence of steam in a volume of air at a predetermined temperature. The apparatus includes a temperature sensor having two respective temperature build-up times representing an under steam temperatur... | 04/04/1995 |
| 5392639 | Apparatus and method for identifying and distinguishing different refrigerants Refrigerant type is identified and determined by storing in electronic memory indicia representative of saturation pressure/temperature characteristics of a plurality of differing refrigerant types. A liquid refrigerant sample of unknown type is obtained ... | 02/28/1995 |
| 5327772 | Steam quality sensor A method and apparatus are disclosed for determining steam quality wherein heat is added to or removed from a sample flow of steam to reach a point of superheating or subcooling. The amount of energy required to superheat or subcool the sample is factored... | 07/12/1994 |
| 5195358 | Apparatus for measuring water-vapor partial pressure An apparatus (1) for measuring the water-vapor partial pressure in mixtures of water vapor and gases has an electrolytic cell (18), a measuring sensor (11) determining the temperature of the electrolyte (20), and a heater (23). The cell (18) is subjected ... | 03/23/1993 |
| 5158747 | Apparatus for identifying and distinguishing different refrigerants Apparatus for identifying and distinguishing between at least two different types of refrigerant includes a sample container having a fixed internal volume. Refrigerant to be tested is selectively admitted into the container in vapor phase, vapor pressure... | 10/27/1992 |
| 4799376 | Cloud water measurement An incoming airstream is channeled into a diffuser to reduce its spread. Heating coils heat the air in order to vaporize any water present. Then, a collection pipe draws off a portion of vaporized mixture and transmits it to a dew point meter at which the... | 01/24/1989 |
| 4594879 | Thermal conductivity detector A thermal conductivity detector of the type that uses an electrical bridge of four heaters with the fluid to be measured being exposed to a pair of heaters and the reference fluid being exposed to the other pair of heaters, wherein the invention improves ... | 06/17/1986 |
| 4471648 | Temperature control system A temperature control system is disclosed wherein a heater of a gas sensor and a plurality of reference resistors cooperate to form a bridge circuit. The temperature control system comprises a comparator means for monitoring a balancing voltage of the bri... | 09/18/1984 |
| 4461166 | Dynamic current drive method for powering thermal conductivity detectors A gas stream detection apparatus having a balanced resistive bridge network enclosed within a housing and an electronic power supply for driving the bridge network. The power supply includes a voltage source feeding a voltage-to-current converter with two... | 07/24/1984 |
