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| Number | Title | Issue Date |
| 7294310 | Liquid transport device and liquid transporting method A liquid transport device capable of introducing and transporting a liquid and preventing a backward flow of the liquid in a small-sized analysis system is provided. The liquid transport device has a substrate 201, an ejection orifice 205, which is for... | 11/13/2007 |
| 7255380 | Bottom-emptying device for tapered bailer A bailer has a tapered leading end to reduce agitation and turbidity as the bailer is introduced into a body of liquid fluid. A check valve is unseated and admits liquid fluid into the bailer as the bailer enters the liquid fluid. The check valve is seated and seals... | 08/14/2007 |
| 7179423 | Microfluidic system including a virtual wall fluid interface port for interfacing fluids with the microfluidic system A fluid interface port in a microfluidic system and a method of forming the fluid interface port is provided. The fluid interface port comprises an opening formed in the side wall of a microchannel sized and dimensioned to form a virtual wall when the microchannel i... | 02/20/2007 |
| 7178416 | Radio frequency identification (RFID) test information control and tracking system In one embodiment, a system for analytical testing comprises a test cartridge for use in conducting an analytical test including a test medium and an RFID device. An encoding device is provided adapted to preprogram the RFID with information relating to the test. An... | 02/20/2007 |
| 7155989 | Test port A test port assembly and method are utilized for returning air characteristics within a closed chamber. The test port assembly is positioned in an exterior wall or panel and as required the test port is opened by removing a threaded cap. A thermometer can then be in... | 01/02/2007 |
| 7132650 | High throughput multi-dimensional sample analysis High throughput analytical systems and methods employing multiple liquid phase separation process regions coupled to a common mass spectrometer are provided. Disclosed systems and methods permits parallel separation and parallel storage of discrete eluate fractions,... | 11/07/2006 |
| 7089812 | Transfer of a sample from a solid support into a liquid An apparatus (10) and a method for concentrating and transferring volatile compounds contained in a sample on a detachable solid support (12) into a liquid for subsequent detection and/or analysis of the volatile compounds, are described. The apparatus... | 08/15/2006 |
| 7071000 | Method for sampling reaction products A method for sampling reaction products includes delivering a reactant through a sampling probe to contact a substance deposited on a substrate and reacting the reactant to form a reaction product. At least a portion of the reaction product is withdrawn through the ... | 07/04/2006 |
| 7066011 | Liquid chromatograph and analysis system The present invention aims to provide a liquid chromatograph, an analysis system, and a gradient elution method, which are designed to permit a gradient change of eluent with higher precision and also permit a high sensitive detection or analysis. For attaining the ... | 06/27/2006 |
| 7044010 | Continuous fluid sampler and method An aseptic, continuous sampling arrangement used in a fluid transportation system, the arrangement including an elbow pipe and a septum cartridge. The sampling arrangement further including a needle, a tube, and a collection reservoir, arranged such that the collect... | 05/16/2006 |
| 6952945 | Method and apparatus for concentrating samples for analysis A method for analyzing a gas sample is described. The method comprises providing a gas sample, increasing pressure applied to the gas sample to compress the sample to a smaller volume and provide a pneumatically focused gas sample, and analyzing the pneumatically fo... | 10/11/2005 |
| 6923076 | Flushing a multi-port valve manifold A method for flushing gas pockets from a manifold that forms a part of a liquid sampling system that is compatible with a chemical-mechanical polishing system is described. A flushing liquid, e.g., ultra pure water, is introduced into, and expelled from, the manifol... | 08/02/2005 |
| 6910503 | Methods and apparatus for micro-fluidic analytical chemistry Improved valve and methods for analytical techniques and systems. The valve includes a main housing, together with a rotor and stator. The stator has openings therethrough which allow for fluid communication between tubing when connected to the valve, and one surfac... | 06/28/2005 |
| 6864091 | Sampling probe A sampling probe for delivering a reactant to a substance deposited on a substrate to form a reaction product and for transporting the reaction product to a product analyzer for analysis. The probe includes a tip positionable over the substance on the substrate. The... | 03/08/2005 |
| 6675629 | Method of and instrument for analyzing a gas An instrument provides a quantitative measurement of an analyte in a gas. It includes a detection cell that provides an indication of an amount of analyte present in the gas, and a valve having a closed position, a sample gas position, and a calibration g... | 01/13/2004 |
| 6658915 | Portable sensor A vapor sensing device that is sufficiently small and lightweight to be handheld, and also modular so as to allow the device to be conveniently adapted for use in sensing the presence and concentration of a wide variety of specified vapors. The device pro... | 12/09/2003 |
| 6613571 | Method and system for detecting biological and chemical hazards in mail A method and system for detecting chemical or biological hazards in items is provided. An incoming mail mailbox includes a sampler to sample air from a letter that is tested using a first sensor and then placed in a receptacle having an environment that i... | 09/02/2003 |
| 6598474 | Adapter for holding a sample container to facilitate sensing of liquid level in the sample container An adapter for holding a sample container includes a main body portion and a tapered body portion that forms a continuation of the main body portion. The tapered body portion includes a mouth opening that is of lesser diameter than the diameter of the mai... | 07/29/2003 |
| 6550313 | Test gas leakage detection apparatus The invention relates to a test gas leakage detection apparatus (1) comprising a test chamber (2) and supply and measuring devices such as fore-pumps and high-vacuum pumps, test gas detectors, electronic components, etc. In order to construct an apparatus... | 04/22/2003 |
| 6502448 | Chromatography detection system and method A chromatography detection system can handle the flow from a chromatography column. The chromatography detection system has an injection valve and a detector for detecting emissions from a flowing sample. The injection valve has at least one loop and is a... | 01/07/2003 |
| 6497136 | Trace-level gas analysis apparatus and method A trace-level gas analysis apparatus having a diffusion scrubber 11 that captures atmospheric gas components and a sampling tube 10 that guides air into the diffusion scrubber 11 is provided with the cleaning means 2 for cleaning the diffusion scrubber 11... | 12/24/2002 |
| 6428751 | Self-centering sample cup assembly A sample cup assembly for use with an analytical instrument having a sample cup holder with an inner diameter which is greater than the outer diameter of the sample cup assembly. The sample cup assembly can include a main cell for retaining a specimen to ... | 08/06/2002 |
| 6415670 | Injection apparatus An injection apparatus of the present invention includes a first switching valve RV1 which is selectively connected to any of a plurality of injectors 21-30 at one end sides thereof; a second switching valve RV2 which is selectively connected to any of th... | 07/09/2002 |
| 6387328 | Disposable sampling device for particle counting apparatus A disposable sampling device for an apparatus for counting particles contained in a liquid, including a solid block-shaped housing connectable in a defined position to the apparatus. The housing has a member for introducing a sample therein, a device for ... | 05/14/2002 |
| 6260407 | High-temperature characterization of polymers Rapid characterization and screening of polymer samples to determine average molecular weight, molecular weight distribution and other properties is disclosed. Rapid flow characterization systems and methods, including liquid chromatography and flow-injec... | 07/17/2001 |
| 6192768 | Flow-through sampling cell and use thereof A sampling cell of flow-through type and use of such a sampling cell. The sampling cell is preferably manufactured by etching of silicon wafers. It is especially useful for continuous picovolume sampling in an analytical flow. The pressure pulse generator... | 02/27/2001 |
| 6171238 | Portable hand-held device with a biosensor The invention pertains to a portable hand device with biosensor for the investigation of biological fluids such as whole blood, liquor, urine and serum. It is characterized by a securely fixed electrode, which is covered by a replaceable biomembrane, as r... | 01/09/2001 |
| 6164144 | Method and device for solid phase microextraction An improved method and apparatus are described for carrying out SPME onto the inner surface of a syringe needle at least partially coated with a stationary phase followed by desorption of analytes from a sample into a gas chromatograph injector for analys... | 12/26/2000 |
| 6155123 | Multivalving sample injection system A sample inject valve system is described, which enables a modified sample injection valve to perform many functions that are required to inject a sample into a chromatographic column, to minimize the amount of laboratory table space previously occupied b... | 12/05/2000 |
| 5992211 | Calibrated medical sensing catheter system A calibrated medical sensing catheter system in which a catheter-mounted sensor may be calibrated in a simple and reliable manner. In one embodiment the calibration may be performed using a disposable vessel containing two volumes of calibrating fluid, ea... | 11/30/1999 |
| 5841022 | Gas analyzer and gas analysis method The present invention provides a gas analyzer used for contamination control of a clean environment by collecting samples from a plurality of measurement points while switching these points and continuously monitoring the volatile components present in th... | 11/24/1998 |
| 5814742 | Fully automated micro-autosampler for micro, capillary and nano high performance liquid chromatography A liquid chromatography micro-autosampler is disclosed that permits the sampling of very small samples quantities at high accuracy, while minimizing extracolumn band broadening. The autosampler employ a sample intake tubing connected to the injection valv... | 09/29/1998 |
| 5714676 | Method and apparatus for analyzing gas components and apparatus for collecting sample gases A gas component analyzing system having a diffusion scrubber and a chromatograph wherein a flow passage switch valve and a sample injection valve are switched to form a non-circulation flow passage for feeding an absorption liquid into the diffusion scrub... | 02/03/1998 |
| 5650577 | Liquid sampling valve A liquid sampling valve includes a fixed element having a contact surface and a movable element having a contact surface for contacting the contact surface of the fixed element; the fixed element or the movable element having measuring passageways extendi... | 07/22/1997 |
| 5565172 | Hydraulic fluid vapor sensor A method and apparatus for detecting the presence of a vapor of an alkyl ester of phosphoric acid, particularly tributylphosphate, in ambient air. A sample of ambient air is heated to convert any alkyl ester of phosphoric acid to an alkene. The heated sam... | 10/15/1996 |
| 5524496 | Liquid sampling valve A liquid sampling valve includes a fixed element having a contact surface and a movable element having a contact surface for contacting the contact surface of the fixed element; the fixed element or the movable element having measuring passageways extendi... | 06/11/1996 |
| 5487313 | Fluid-lock fixed-volume injector An automated micro-valve assembly injects a fixed fluid volume fluid into a destination stream. The fluid to be injected (inject fluid) is conducted into a chamber. Flow of inject fluid out of the chamber is prevented by sealing the ends of the chamber us... | 01/30/1996 |
| 5442175 | Gas evolution component analysis A method and apparatus for analyzing chemical compounds on a surface, such as the surface of a semiconductor wafer, comprising: a heater component for volatilizing the chemical compounds from the surface and capturing said volatilized compounds, a condens... | 08/15/1995 |
| 5395588 | Control of flow cytometer having vacuum fluidics The present invention relates to a system for controlling the movement or transport of objects such as cells and other particles in a moving liquid stream. More particularly the invention relates to a system including a vacuum pump which pulls the sheath ... | 03/07/1995 |
| 5373724 | Method of sensing a gas concentration A resealable gas concentration sensor for determining the concentration of a particular gas within a gaseous environment. The sensor is constructed of a housing and a cap. The cap is adapted to be temporarily coupled with the housing while in the environm... | 12/20/1994 |
