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| Number | Title | Issue Date |
| 8109157 | Methods and apparatus of downhole fluids analysis A fluid sampling and analysis module for a downhole fluid characterization apparatus configured for operation downhole, within a borehole. The fluid sampling and analysis module comprises a primary flowline for fluids withdrawn from a formation to flow through the f... | 02/07/2012 |
| 8065928 | Vented filter for automatic HPLC loop loading A vented filter is placed at the HPLC (High Performance Liquid Chromatography) loop entry port of an HPLC injector valve. The vented filter prevents the push gas used to deliver the crude radiolabeled product from over-pushing the liquid to waste. Push gas is vented... | 11/29/2011 |
| 7396512 | Automatic precision non-contact open-loop fluid dispensing A rugged, all-electronic fluid dispensing system for use with pipettes or in other contexts indirectly measures fluid flow by using a non-linear system model to correlate vacuum existing at the top of a column of suspended fluid. Non-contact operation is provided to... | 07/08/2008 |
| 7288228 | Sample injection system An HPLC injection valve is mounted to a probe drive system close to the probe axis to minimize probe movements required for sample injections into a mobile phase column. The probe is directly connected by a short conduit to the injection valve, eliminating the need ... | 10/30/2007 |
| 7258783 | Fluid delivery system for a water tub using a removeable chemical carrier A water tub including a fluid delivery system utilizes a removeable carrier to provide fluids to the fluid delivery system. In some instances, the carrier is disposable such that depletion of the fluids within the container results in the carrier being thrown away a... | 08/21/2007 |
| 7143787 | Microluidic valve having two revolving valve elements A component part of a microfluidic valve adapted to be coupled with a microfluidic device, the microfluidic device having at least one port coupled to a flow path of the microfluidic device, the component part comprising a first revolving valve element having a firs... | 12/05/2006 |
| 7100460 | Concentric tube microplate autosample interface In accordance with an illustrative embodiment of the invention, a system for obtaining a fluidic sample from a container is presented. The container defines a volume for holding the sample, the volume being closed by a seal. An outer tube has a proximal end and a di... | 09/05/2006 |
| 7028564 | Low flow bailer system An improved bailer which allows for the variance of flow into the bailer through use of attachments with varying inflow orifice sizes. As the size of the orifice changes, the weight of the apparatus can also be changed allowing for an only slightly negative buoyancy... | 04/18/2006 |
| 7019541 | Electric conductivity water probe An electric conductivity water probe consisting of a test chamber having a wall, a fluids input/output port, and a water input port, the wall having a first and at least a second wall section, the first and at least second wall sections being electrically isolated f... | 03/28/2006 |
| 7001774 | Sample collection and processing device A volume-adjusting insert for sample vessels comprises an elongated body with a septum seal on one end and a seal surface on the outside of the body. A through-chamber in the body provides a receiving chamber for a hypodermic needle inserted into the septum. The sea... | 02/21/2006 |
| 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 |
| 6890489 | Mass rate attenuator While a large primary stream (24) of analytes flow from a chromatographic column (20) to containers of a receiver (108), small samples of the analytes are diverted for flow to a mass spectrometer (54) for analysis, by use of a transfer mo... | 05/10/2005 |
| 6874354 | Sample injection valve for high-performance liquid chromatography (HPLC) devices The sample injection valve for high-performance liquid chromatography (HPLC) devices comprises a stator with inlets for the sample and the mobile phase, outlets leading to the chromatography column and to a waste collector, as well as connections for both ends of a ... | 04/05/2005 |
| 6854346 | Purging system for use with a gas sampling system A combination purging system and sampling system is provided for sampling gas from a pipeline. A flow path 40 provides fluid communication between a sample bottle 45 and the pipeline. The sample bottle 45 is initially filled with an inert gas fo... | 02/15/2005 |
| 6793819 | Airtight waste solution sampling apparatus An airtight sampling apparatus for effectively and accurately sampling a waste solution including volatile organic compounds (VOC's) from a main waste solution conduit having a first pressure P1, is provided. The airtight sampling apparatus includes (a) a was... | 09/21/2004 |
| 6662826 | Liquid metering and transfer valve assembly with port switch A multi-disc liquid metering and transfer valve includes a port switch valve disc that has at least two inlet connections. Each of the connections is coupled to different fluid samples, such as blood. The remaining discs of the valve are used to provide m... | 12/16/2003 |
| 6632404 | Automatically actuated parallel sample injector valve A sample injector valve capable of introducing multiple samples of material into multiple liquid or gas streams is provided. Such a valve is particularly useful for injecting multiple samples under pressure into a combinatorial chemistry system with movin... | 10/14/2003 |
| 6612153 | Planar manifold with integrated heated injector inlet and unheated pneumatics A planar manifold that integrates all the control pneumatics, electronic pressure controls (EPC), and injector inlet onto a single plate, therefore eliminating numerous seals, fittings and transfer tubing between these devices. The planar manifold utilize... | 09/02/2003 |
| 6524531 | Hand-held dispenser/aspirator A hand-held, single-channel dispenser/aspirator is disclosed. The present dispenser/aspirator comprises a body portion for gripping the dispenser and a head portion. In some embodiments, the head portion includes a valve, a liquid conduit and a removable ... | 02/25/2003 |
| 6490938 | Internally purged gas injector A gas injector comprises (1) a carrier gas channel through which a carrier gas can enter the injector, (2) an output channel through which the carrier gas and a gaseous sample can be injected from the device to an analytical instrument, (3) a sample gas c... | 12/10/2002 |
| 6477906 | Automatic multi-sorbent tube air sampler A sampling system for capturing samples of trace elements in ambient air comprises a multi-port valve coupled to a plurality of sorbent tubes. Each tube is connected to the multi-port valve by means of pairs of the valve ports. The multi-port valve is con... | 11/12/2002 |
| 6387710 | Automated sample processor Provided is a liquid handling device comprising: a cylindrical actuator cavity in a substrate, the actuator cavity intersected by two or more actuator channels; one or more chambers with an access channel adapted to connect to a separate one of actuator c... | 05/14/2002 |
| 6382035 | Multi-valving sample injection apparatus A multi-function valve apparatus for use with a Probe-In-Loop (PIL) architecture sample injection assembly which enables both Partial-Fill and Complete-Fill injections. The rotor element is rotatable about a rotation axis relative the stator between: a Lo... | 05/07/2002 |
| 6176248 | Submerged hydraulic value actuator with leak protection A submerged, valve assembly for controlling flow of fluid (e.g. ballast water) to and from a reservoir (e.g. a ballast tank of a ship. The valve assembly is comprised of a valve which is controlled by a hydraulic valve actuator. A fluid-tight housing encl... | 01/23/2001 |
| 6112604 | Process plant sample collection system and method This disclosure sets out a method and apparatus for extracting repeated process samples. Each sample is put into a segregated bottle or container and the container is dated and time stamped. The containers are arranged in sequence on a feed system and are... | 09/05/2000 |
| 6012487 | Prime purge injection valve or multi-route selections valve A valve is described for loading a sample at low pressure and injecting said sample into a high pressure stream, and for priming or purging of a high pressure pump. Also described is a multi-route selection valve which allows the selection of alternate fl... | 01/11/2000 |
| 6007777 | Liquid sample carbon analyzer An analytical instrument measures carbon content of a liquid sample. The instrument includes a sample inlet, a reagent inlet, a rinsing solution inlet, a reaction chamber, a waste outlet and a syringe pump. A multiple port valve has a plurality of ports w... | 12/28/1999 |
| 5925833 | Process plant sample collection system and method This disclosure sets out a method and apparatus for extracting repeated process samples. Each sample is put into a segregated bottle or container and the container is dated and time stamped. The containers are arranged in sequence on a feed system and are... | 07/20/1999 |
| 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 |
| 5597966 | Fluid sampling device An bailer apparatus for collecting a sample from a body of fluid comprising an elongated hollow body receptacle having first and second ends and defining a chamber therebetween. A valve device is provided for permitting fluid to enter the chamber and be r... | 01/28/1997 |
| 5538690 | Air quality indicator system for breathing air supplies An apparatus for indicating the presence of CO and oil in a compressed breathing air supply provided in a tank. An indicator contains a substance which undergoes an observable physical change when exposed to a contaminant. The indicator is activated and p... | 07/23/1996 |
| 5473950 | Process plant sample collection method A method and apparatus for obtaining a sample from a on stream plant operation is set forth. In a process plant, with a small pressure differential, fluid flow is provided through an inlet line and surplus is returned through an outlet line connected with... | 12/12/1995 |
| 5345828 | Process plant sample collection system and method A method and apparatus for obtaining a sample from a on stream plant operation is set forth. In a process plant, with a small pressure differential, fluid flow is provided through an inlet line and surplus is returned through an outlet line connected with... | 09/13/1994 |
| 5310685 | Apparatus for delivering a calibration standard A sample delivery apparatus which can by used to repetitively deliver a sample to a process or an analyzer, either automatically or on demand. The sample delivery apparatus can be sealed under an inert atmosphere, thus minimizing the possibility of change... | 05/10/1994 |
| 5110727 | Method for performing coagulation assays accurately, rapidly and simply, using dry chemical reagents and paramagnetic particles A method and apparatus for the measurement of clot formation times, clot dissolution times, or clotting parameters is disclosed. This method performs these measurements by monitoring movement of magnetic particles incorporated in the sample being assayed,... | 05/05/1992 |
| 5105851 | Apparatus for multi-path flow regulation Valve assemblies are provided which comprise a housing having a common port and n peripheral ports, where n is an even integer greater than or equal to 4. The valve assemblies further comprise a valve plug contained within the housing. The valve plug comp... | 04/21/1992 |
| 5093083 | Method for controlling the environment in a liquid diluting and transfer valve assembly A liquid diluting and transfer valve assembly of a type which includes at least a pair of valve elements with slidably engageable surfaces which are frictionally movable relative to each other are provided with passageways therein in communication with li... | 03/03/1992 |
| 5089234 | Controlled environment liquid diluting and transfer valve assembly A liquid diluting and transfer valve assembly of a type which includes at least a pair of valve elements with slidably or rotatable engageable surfaces which are frictionally movable relative to each other are provided with passageways therein in communic... | 02/18/1992 |
| 5071624 | System for introducing a sample substance into a spectroscopical analytical instrument A system for introducing a sample substance into a spectroscopical analytical instrument which includes a first pump which, when on, pumps a sample liquid and a buffer liquid, and a second pump which, when on, pumps an eluting liquid and rinsing liquid. T... | 12/10/1991 |
| 4980130 | System for preparation of samples for analysis There is disclosed herein an automated sample preparation system for chemical assay of samples of materials. The sample preparation system includes a sample preparation chamber which includes a removable cup for taking to the location of solid or very vis... | 12/25/1990 |
