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| Number | Title | Issue Date |
| 7737700 | Arrangement and method for detecting air ingredients Detecting air ingredients is obtained, a heater and gas sensitive acting layers are arranged on a substrate, which are connectable to an analyzing unit. Electrical resistances of n acting layers are connected in series; heater is a temperature sensor connected in pa... | 06/15/2010 |
| 7415312 | Process module tuning A process module tuning method characterizes a process module by gathering data using a process condition measuring device to measure process outputs while inputs are excited. The data is used to identify a dynamic process model. The dynamic process model is then be... | 08/19/2008 |
| 7230432 | Nanotube sensor A sensor having a nanotube grown on and supported by thermal bimorph structures. The nanotube rests on a heat sink during sensing gas or a liquid and is moved from the heat sink when the nanotube is heated to desorb gas or liquid from it. The heatsink may function a... | 06/12/2007 |
| 7148676 | Ancillary equipment for testing semiconductor integrated circuit An ancillary equipment is provided for testing a semiconductor integrated circuit, by which a plurality of BOST boards serving as measuring units can be set near a device to be measured and tests can be conducted with high accuracy on a number of circuits embedded o... | 12/12/2006 |
| 6949931 | Nanotube sensor A sensor having a nanotube grown on and supported by thermal bimorph structures. The nanotube rests on a heat sink during sensing gas or a liquid and is moved from the heat sink when the nanotube is heated to desorb gas or liquid from it. The heatsink may function a... | 09/27/2005 |
| 6744373 | Portable gas alarm device Disclosed is a portable gas alarm device easy to be fabricated as a small-sized one handy to carry and high in convenience for use. The portable gas alarm device comprises a gas alarm device body having a casing flat in whole and a fitting member provided on the cas... | 06/01/2004 |
| 6568245 | Evaporative electrical detector An aerosol detector, particularly well suited for liquid chromatography applications, includes a corona discharge source controlled to selectively charge the non-volatile residue particles of an aerosol. The aerosol initially is composed of droplets of a ... | 05/27/2003 |
| 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 |
| 5889404 | Discharge ionization detector having efficient transfer of metastables for ionization of sample molecules In a discharge ionization detector, a method and apparatus are disclosed for increasing the transfer of photons and metastables from a discharge chamber to a ionization chamber, while effecting ion discrimination of the ionic current with respect to a sig... | 03/30/1999 |
| 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 |
| 5293130 | Proportional counter device for detecting electronegative species in an air sample Apparatus for detecting an electronegative species comprises an analysis chamber, an inlet communicating with the analysis chamber for admitting a sample containing the electronegative species and an ionizable component, a radioactive source within the an... | 03/08/1994 |
| 4804846 | Photoionization detector for gas chromatography An improved photoionization detector has a sweep gas inlet which is used to introduce sweep gas near the window of the detector's ultraviolet lamp. The detector's chamber has a vent which allows selective removal of spurious analyte. The detector is adapt... | 02/14/1989 |
| 4799018 | Air fuel ratio measuring system A detecting element (6) comprising a solid zirconia electrolyte (6a), a reference electrode (6d), a detecting electrode (6c) and a diffusion member (6a) is provided, and also a driving circuit (1b, 4) for impressing a voltage between the electrodes (6c, 6... | 01/17/1989 |
| 4684807 | Flow contoured electron capture detector cell A small volume electron capture detector has a cylindrical cell 120 inside which there is provided a generally funnel-shaped insert structure 130 having a cup-shaped section and a cylindrical section. The rims of the cup-shaped section nearly touch the in... | 08/04/1987 |
| 4651008 | Sample inlet system for an electron capture detector An electron capture detector for use with a capillary column is provided with a sample inlet comprising a tubular anode through which sample molecules and a make-up gas are introduced into the detector cell. The tubular anode has side ports for producing ... | 03/17/1987 |
| 4398152 | Photoionization detector A gas discharge tube is provided for use in a detector of the type capable of identifying ionizable species in a carrier gas. The tube contains an inert gas at reduced pressure and the gas is excited by an external circuit including a coil about the tube.... | 08/09/1983 |
| 4389373 | Heated ion current sensor for high temperatures To guide gas to the electrode of a high temperature sensor, a substrate (1), for example of ceramic or ceramic-coated metal has electrodes (3, 4; 7, 8; 16, 17) applied thereto, for example in meander pattern, spaced from each other. A heater is applied to... | 06/21/1983 |
| 4304997 | Electron capture detector with thermionic emission electron source An electron capture detector in which a thermionic source such as a filament provides electrons for the reaction in a source chamber having a port that connects to a detection chamber having a collector. Guard gas is introduced into the source chamber and... | 12/08/1981 |
| 4264817 | Coaxial electron capture detector with thermionic emission electron source An electron capture detector in which electrons for the reaction are supplied by a filament in a cylinder through which guard gas is passed. Apertures in the cylinder permit electrons from the filament to pass into an annular space surrounding the cylinde... | 04/28/1981 |
| 4063156 | Assymetric cylinder electron capture detector An asymmetric cylinder electron capture detector comprises an electrode configured to define an ionization volume, a source of ionizing radiation disposed within the ionization volume, a collector electrode, with a gas flowing past the collector electrode... | 12/13/1977 |
| 4021718 | Battery monitoring apparatus A method and apparatus for continuously monitoring the remaining ampere hours of charge of a rechargeable battery. The invention utilizes a voltage monitoring system actuated by a current monitoring system to measure battery terminal voltage only when cur... | 05/03/1977 |
| 4007624 | Electronegative gas detection technique The detection of electronegative gases through the use of a dissociative electron attachment process is enhanced by exciting the molecules of an electronegative gas of interest to an electronic or vibrational level to increase the cross section of the mol... | 02/15/1977 |
