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| Number | Title | Issue Date |
| 8054082 | Device and method for coupled measurements for globally and continuously tracking traces of tars present in a gas flow The measurement is carried out by a device of two non- dissociable measurement chains resulting in a continuous measurement which is representative of the total concentration of tars (even as traces) of a hot gas. It involves coupling of methods including one, SPME/... | 11/08/2011 |
| 7243527 | Sensing apparatus for a vehicle The sensing apparatus for a vehicle includes a case having an opening part formed so as to communicate with an outside. A printed circuit board is disposed inside of the case, and includes a circuit unit. A noxious gas sensing part is electrically connected with the... | 07/17/2007 |
| 7223607 | Process and device for the detection of hydrocarbons in a gas The invention relates to a process for the detection of hydrocarbons other than methane in a gas predominantly or essentially comprising oxygen, as well as methane and the said hydrocarbons other than methane, the said process comprising: ... | 05/29/2007 |
| 7194891 | High-temperature gas sensors A method of sensing the amount of a gas in a fluid flow includes operating an acoustic wave (AW) sensor at a first resonant frequency. The AW sensor includes a high temperature stable piezoelectric plate coupled to a first gas-absorbing layer. Also included is combi... | 03/27/2007 |
| 7183772 | Ion detector A charge detector includes an outer housing having an entrance aperture. Within the housing is disposed a charge capture element that is electrically isolated from the outer housing. The charge capture element includes a plurality of apertures, such as provided by a... | 02/27/2007 |
| 7150994 | Parallel flow process optimization reactor Parallel flow reaction systems comprising four or more reaction channels are disclosed. Distribution systems, and parallel flow reaction systems comprising such distribution systems are also disclosed. Specifically, the distribution systems comprise one or more subs... | 12/19/2006 |
| 6993960 | Method and apparatus for detecting combustion instability in continuous combustion systems An apparatus and method to sense the onset of combustion stability is presented. An electrode is positioned in a turbine combustion chamber such that the electrode is exposed to gases in the combustion chamber. The electrode may be integrated with an igniter. A cont... | 02/07/2006 |
| 6887069 | Real-time combustion controls and diagnostics sensors (CCADS) The present invention is directed to an apparatus for the monitoring of the combustion process within a combustion system. The apparatus comprises; a combustion system, a means for supplying fuel and an oxidizer, a device for igniting the fuel and oxidizer in order ... | 05/03/2005 |
| 6693433 | Silicon oxide contamination shedding sensor In a flame ionization sensor type gas combustion control apparatus, the sensor tip, or probe, exposed to the flame is constructed and arranged according to materials and shapes which promote mechanical deformation of the sensor due to thermal expansion an... | 02/17/2004 |
| 6580280 | Multilayered gas sensor and a related gas concentration detecting system An exhaust gas side electrode is provided on one surface of a solid electrolytic substrate. A reference gas side electrode is provided on an opposite surface of the solid electrolytic substrate so as to be exposed to a reference gas stored in a reference ... | 06/17/2003 |
| 6559650 | RF power probe head with a thermally conductive bushing A probe interface for an RF probe head improves the dissipation of heat resulting from RF power. The interface includes a conductor for transmitting RF power to a plasma chamber, and a sensing board for generating an analog signal based on the RF power. A... | 05/06/2003 |
| 6504377 | Device for quantitative detection of copper in silicon by transient ionic drift and method using same An analyzing device for producing measurements using transient ionic drift technique and an analysis method using same. The device for the quantitative detection of copper in silicon by transient ionic drift essentially comprises a heater and a rapid cool... | 01/07/2003 |
| 6429020 | Flashback detection sensor for lean premix fuel nozzles A sensor for detecting the flame occurring during a flashback condition in the fuel nozzle of a lean premix combustion system is presented. The sensor comprises an electrically isolated flashback detection electrode and a guard electrode, both of which ge... | 08/06/2002 |
| 6414494 | Silicon oxide contamination shedding sensor In a flame ionization sensor type gas combustion control apparatus, the sensor tip, or probe, exposed to the flame is constructed and arranged according to materials and shapes which promote mechanical deformation of the sensor due to thermal expansion an... | 07/02/2002 |
| 6404205 | Method for testing the reliability of an electrochemical gas sensor The present invention is a method by which the deterioration judgement and the correction of an electrochemical carbon monoxide gas sensor are simply carried out without using the correction gas. The method of the present invention is that: the voltage is... | 06/11/2002 |
| 6107805 | Extended detection zone in an ionization detector An ionization detector for detection of an analyte includes a source chamber having a source of ionizing particles and receiving a fluid stream of detector gas; an ionization chamber connected to the source chamber at an ionization chamber entrance thereb... | 08/22/2000 |
| 6084414 | Testing for leakage currents in planar lambda probes A method for testing for leakage currents in an oxygen probe, in particular a planar lambda probe, having at least one heating element, one external electrode and one internal electrode, and a solid electrolyte arranged between the electrodes, a first vol... | 07/04/2000 |
| 6032513 | Apparatus and method for measuring contaminants in semiconductor processing chemicals An trace analyzer apparatus and method useful in semiconductor processing for measuring trace impurities in gases and liquids comprising a gas chromatograph serving to replace a bulk gas in a composition of bulk gas including contaminants in a bulk gas st... | 03/07/2000 |
| 5969617 | Flame ionization detector A flame ionization detector having a pair of spaced electrodes to which a DC voltage is applied and a flame produced between the electrodes by burning a gas whose composition is to be determined, thereby ions are produced which form an ion current between... | 10/19/1999 |
| 5846341 | Method of carrying out diagnostics on a process for the thermo-chemical treatment of steels and alloys in a glow discharge and a device for carrying out the said method The proposed method of carrying out diagnostics on a process for the thermo-chemical treatment of steels and alloys in a glow discharge involves monitoring the ionization characteristics of the atmosphere as revealed by the intensity of the electromagneti... | 12/08/1998 |
| 5739699 | Method and apparatus for ion discrimination in an electron capture detector Electron capture detector for use with an effluent stream from a gas chromatograph includes an electron source means and an adjacent ionization chamber in which electron capture takes place. The active region of the ionization chamber is disposed to recei... | 04/14/1998 |
| 5608384 | Method and apparatus for monitoring for the presence of a gas There is a method and disclosed apparatus for detecting for the presence within a gaseous atmosphere of a gas of a concentration above a preset level. The detecting apparatus comprises a sensor including a heater/anode element and a collector/cathode elem... | 03/04/1997 |
| 5576626 | Compact and low fuel consumption flame ionization detector with flame tip on diffuser A compact and low fuel consumption flame ionization detector includes a precisely pored metallic disk or a silicon micro-machined diffuser plate through which the sample gas tube extends a minimum distance (less than 2 mm). The oxidant flows into the dete... | 11/19/1996 |
| 5444435 | Halogen monitoring apparatus There is disclosed apparatus for monitoring the concentration levels of halogen gas in a gaseous atmosphere as confined in an enclosure over a relatively extended period of time. Such monitoring apparatus includes a sensor including first and second elect... | 08/22/1995 |
| 5426056 | Surface ionization detector for detecting trace amounts of organic molecules A surface ionization detector for detecting organic molecules such as illicit drugs and non-organo-nitrate explosives includes a heated surface and a collector electrode. A sample containing trace amounts of the organic molecules in ambient air is directe... | 06/20/1995 |
| 5301537 | Method for detecting halocarbon refrigerant leaks by usage of a continually heated mass spectrometer Detection of leakages of refrigerant from compressor-evaporator-condenser circuits is carried out with an electron multiplier equipped mass spectrometer of which the evacuated detector chamber is maintained at substantially constant elevated temperature i... | 04/12/1994 |
| 5198774 | Gas monitoring apparatus There is disclosed apparatus for monitoring the concentration levels of halogen gas in a gaseous atmosphere as confined in an enclosure over a relatively extended period of time. Such monitoring apparatus includes a sensor including first and second elect... | 03/30/1993 |
| 5102806 | Method for analyzing fluid by multi-fluid modulation mode A method for analyzing fluid by a multi-fluid modulation mode is characterized by subjecting a plurality of sample fluids (which may be different or a single sample fluid divided into a plurality of systems) to a fluid modulation by reference fluids at va... | 04/07/1992 |
| 5073753 | Hydrocarbon flame ionization detector A flame ionization detector comprises a housing forming a flame chamber for burning a mixture of hydrogen, oxidant and a sample gas. The flame chamber includes: a nozzle in which the sample gas and hydrogen are intimately mixed prior to injection, an igni... | 12/17/1991 |
| 5053343 | Selective ionization of gas constituents using electrolytic reactions An ion mobility spectrometer, ionization detector and mass spectrometer is described having a reaction region, and a region for introducing a sample gas, liquid or solid samples into the reaction region and an electrolyte in the reaction region of an alka... | 10/01/1991 |
| 5028544 | Method of analysis of organic compounds in chromatography and apparatus for performing this method The objects of the invention are attained in an apparatus for performing a method of analysis of organic compounds in chromatography, comprising a chromatographic column sealingly connected with the housing of a surface ionization detector having coaxiall... | 07/02/1991 |
| 5019517 | System, detector and method for trace gases A detector system (10) especially suited for detecting a halogen containing component in a gas stream includes a gas chromatograph (12), which is connected by gas line (13) to pyrolysis chamber (14). Sources (16) of additional gas streams are connected by... | 05/28/1991 |
| 5014009 | Detector for gas chromatograph for detecting ammonia and amine compounds A detector device for a gas chromatograph, for detecting surface ionization wherein ions will be detected which are formed upon contacting amine compounds and ammonia with the surface of metallic oxides having a large work function. The detector enables d... | 05/07/1991 |
| 4994748 | Surface ionization detector for analyzing gas mixtures The surface ionization detector for analyzing gas mixtures comprises a case (1) accommodating a thermoemitter placed at right angles to the direction of movement of a gas mixture and formed with electrically insulated extended ionizing elements, for examp... | 02/19/1991 |
| 4910463 | Halogen monitoring apparatus An apparatus for monitoring the concentration levels of halogen gas in a gaseous atmosphere as confined in an enclosure over a relatively extended period of time. Such monitoring apparatus includes a sensor including first and second electrodes disposed t... | 03/20/1990 |
| 4877584 | Temperature programmed spectroscopy techniques Temperature programmed spectroscopy wherein particles of a substrate under investigation are attached in a non-overlapping manner to a heating filament. The temperature of the filament is increased in a controlled manner, thus increasing the temperature o... | 10/31/1989 |
| 4839143 | Selective ionization of gas constituents using electrolytic reactions An ion mobility spectrometer, ionization detector and mass spectrometer is described having a reaction region, and means for introducing a sample gas, liquid or solid samples into the reaction region and an electrolyte in the reaction region of an alkali ... | 06/13/1989 |
| 4775838 | Sensor with periodic heating A gas sensor includes a pair of lead strips, a sensing element preferably comprised of a metal oxide semiconductor, such as SnO2, and extending between the pair of lead strips in the form of a bridge, a heater driver for supplying a heating cur... | 10/04/1988 |
| 4684509 | Apparatus for measuring gas concentrations in a hot gas sample withdrawn from a process chamber An apparatus for measuring a gas concentration in a hot gas sample withdrawn from a process chamber, comprising a metal block (10) adapted to be tempered and housing at least the detector (12) and those components of the flow path guiding the gas to be me... | 08/04/1987 |
| 4565969 | Saturation current incipient soot detector A method and apparatus are employed to detect the onset of soot or smoke formation in a flame exhaust. A pair of oppositely charged electrodes are placed in a flame located where soot formation is likely to occur. Varying voltages are applied across the e... | 01/21/1986 |
