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| Number | Title | Issue Date |
| 7368080 | Smear preparing apparatus A smear preparing apparatus for preparing a smear of a specimen on a glass slide by using a spreader based on a smearing condition, the apparatus includes a memory for storing smearing conditions in connection with pertinent information required for establishing the... | 05/06/2008 |
| 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 |
| 7270019 | Collecting line assembly for monitoring and locating leaks An assembly for monitoring and locating leaks in an installation includes a collecting line formed of a material that is impermeable to a substance to be monitored. The collecting line has a multiplicity of openings spaced apart in its longitudinal direction. The op... | 09/18/2007 |
| 7229594 | Device for dispensing accurately-controlled small doses of liquid The invention provides a device for dispensing accurately-controlled small quantities of at least one liquid, comprising a liquid supply (L); a gas supply (G), arranged to selectively supply a gas pressure; and a capillary duct (20) adapted to be filled with ... | 06/12/2007 |
| 7150998 | Multi-well rotary synthesizer An apparatus for synthesizing polymer chains includes a controller, a plurality of precision fit vials circularly arranged in multiple banks on a cartridge, a drain corresponding to each bank of vials, a chamber bowl, a plurality of valves for delivering reagents to... | 12/19/2006 |
| 7081228 | Apparatus for preparing a fluid sample aliquot A sample aliquot pipette tip (SAT) includes a pipette tip and a sample aliquot cup. The pipette tip is collapsible. The sample aliquot cup is arranged above the pipette tip and is fluidly coupled with the pipette tip. The SAT works in concert with a tip aliquot supp... | 07/25/2006 |
| 7047828 | Pipette tip with an internal sleeve and stabilizing projections A pipette tip member has an elongated tubular receptacle including a sidewall with a plurality of stabilizing projections extending from the sidewall for aligning the pipette shaft, and a sidewall with a bifurcated section that includes first, second, and third side... | 05/23/2006 |
| 7028562 | Vacuum membrane extraction system The present invention relates to apparatus for sampling and analysis of gas phase molecules. A source of negative pressure is used to draw gas phase molecules through a gas-permeable membrane. The gas phase molecules are then directed into an analyzer, suitably a ga... | 04/18/2006 |
| 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 |
| 6875402 | Micropipette, dispenser and method for producing biochip A micropipette usable for producing a biochip inclusive of DNA micro arrays capable of arraying and fixing droplets of a micro-volume on a substrate in a high density includes a main body, at least one cavity for storing a sample, at least one ejection port, a piezo... | 04/05/2005 |
| 6810923 | Pipet for liquid exchange The invention features pipets for fast and efficient liquid exchange, pipet controllers for use with such pipets, and pipetting systems utilizing pipets and/or pipet controllers of the invention. ... | 11/02/2004 |
| 6641993 | Aspirating and mixing of liquids within a probe tip Apparatus and a method for mixing a liquid within a disposable aspirating probe tip so that most of the liquid is forced to move past a transition zone between two different inside diameters to cause rotational mixing. The apparatus and method can be used... | 11/04/2003 |
| 6605257 | Micro array manufacturing apparatus A present micro array manufacturing apparatus includes a substrate placement portion 11 on which a plurality of substrates can be arranged, a tighter plate 12 for storing a solution including a living body sample, a solution storing member 52 for taking i... | 08/12/2003 |
| 6599755 | Method and device for applying small quantities of liquid The present invention relates to a method of depositing small amounts of liquid on a substrate (13) by using a pipette tip (1), which is connected to a flexible delivery line (2). Liquid is taken up by expanding the volume in the delivery line (2), and li... | 07/29/2003 |
| 6451263 | Pipette adapter A multichannel pipette has downwardly depending tip cones to receive disposable tips which have free ends. Adjacent tip cones, and thus the disposable tips, are spaced apart a first distance, which is referred to as the intra-channel spacing. An adapter c... | 09/17/2002 |
| 6426048 | Sample dilution module with offset mixing chamber The sample dilution module includes an oil filled aspiration probe and mixing chamber that communicate with each other while the mixing chamber is maintained at an angle of approximately 5 to 45 degrees below a horizontal axis. The aspiration probe is mai... | 07/30/2002 |
| 6405609 | System and method of aspirating and dispensing reagent Apparatus and methods for aspirating and dispensing reagents are provided. Aspirating of reagents is accomplished by a probe, a vial insert and reagent vial according to the present invention wherein a seal is formed between the probe and the vial insert ... | 06/18/2002 |
| 6261847 | Sample dilution module with offset mixing chamber The sample dilution module includes an oil filled aspiration probe and mixing chamber that communicate with each other while the mixing chamber is maintained at an angle of approximately 5 to 45 degrees below a horizontal axis. The aspiration probe is mai... | 07/17/2001 |
| 5874296 | Method and apparatus for liquid medium exchange The purpose of this invention is to provide a novel apparatus capable of suctioning a liquid from a container by using a vacuum. Simultaneously, the vacuum draws a second liquid from a separate source to fill a reservoir which forms part of the apparatus.... | 02/23/1999 |
| 5869774 | Device for taking a liquid sample Apparatus for taking up liquid batches, comprising a take-up tube (10), a metering pump (20) for drawing liquid into the take-up tube by suction, and a washing pump (30) which functions to pump washing solution through the take-up tube in a direction oppo... | 02/09/1999 |
| 5773305 | Sample dilution module The method of diluting a fluid sample for analysis in a sample analysis system includes the provision of an aspiration probe with two interior sections. The first interior section of the probe has a first diameter and is proximate the aspiration opening o... | 06/30/1998 |
| 5753514 | Method and sample container for collecting small quantites of liquid samples When small quantities of liquid sample are to be collected from the outlet of a small cannula tube, there is used a sample container (1) which includes a narrow capillary tube (2) whose one end is closed with an elastomeric seal (4) through which the cann... | 05/19/1998 |
| 5637809 | Vacuum extraction sampling system A gas sampling system utilizes small sample vacuum transport to reduce the dew point of the sample. A vacuum pump maintains a substantial vacuum on the sampling system causing a sample, drawn at a rate less than a liter per minute, to be drawn and transpo... | 06/10/1997 |
| 5558838 | Sample preparation apparatus A sample preparation apparatus includes a pair of valves. A first valve selectively communicates a sample tube with a vent/aspiration valve, or alternatively communicates a diluent pump with a reaction tube. By moving the first valve, one may selectively ... | 09/24/1996 |
| 5536471 | Syringe with bubble flushing A bubble flushing syringe for aspirating and dispensing fluids through an open-ended tip with precision and volumetric accuracy is disclosed. The syringe comprises a piston within a bore formed by a generally cylindrical wall having a closed end and an op... | 07/16/1996 |
| 5525302 | Method and device for simultaneously transferring plural samples In a preferred embodiment, a multiple sample transfer device which includes a plurality of hollow pistons disposed in a like number of cylindrical channels and connected to a moving plate to permit simultaneous movement of the pistons. At the lower end of... | 06/11/1996 |
| 5517870 | Intra-liquid particle classification apparatus using light scattering A liquid sample is sucked from a staining vessel by a first sampling nozzle and the liquid sample is discharged into a flow cell unit, the liquid sample being supplied to the staining vessel by a second sampling nozzle so as to be stained in the staining ... | 05/21/1996 |
| 5512248 | Twin-probe blood sample diluting device A blood diluting device that can be used in an automatic hematology cell counter, including an outer tube, and an inner tube suspended within the outer tube. A blood sample to be analyzed is aspirated into the outer tube and then the inner tube, and then ... | 04/30/1996 |
| 5506142 | Probe wash for liquid analysis apparatus A system for cleaning a probe used in analytic equipment--for example, that used in analysis of body fluids--in order to reduce carry-over of materials from one sample to the next. A probe wash is provided in which the simultaneous introduction of pressur... | 04/09/1996 |
| 5458010 | Vacuum dilution extraction gas sampling system A gas sampling system utilizing a pair of parallel sonic orifices. One of the orifices is connected to a source of filtered, heated samples. The second, larger orifice is connected to a source of dilution gas. A vacuum pump maintains a substantial vacuum ... | 10/17/1995 |
| 5187990 | Method for dispensing liquids with a pipette with compensation for air pressure and surface tension A hand held self-contained automated pipette for portable operation having an electrically operated digital linear actuator. The actuator preferably includes a stepper motor driving a rotor. A threaded screw is coaxially positioned within the rotor and is... | 02/23/1993 |
| 5158751 | Liquid metering and transfer valve assembly A liquid metering and transfer valve assembly having the capability of metering, isolating, transfering and delivering precise microliter volume aliquots of a blood sample, from a source thereof, to mixing and testing chambers of an electronic blood analy... | 10/27/1992 |
| 4908187 | Device for diluting and mixing liquids and applications for kinetic analysis This invention relates to a diluting and mixing device which is capable of diluting a first solution to produce a second solution which is mixed with an undiluted third solution, to reproducibly produce a unique series of combined solutions. Each solution... | 03/13/1990 |
| 4871682 | Diluent carryover control An air knife is positioned to direct a stream or blast of air across the tip of a sample probe as it is withdrawn from a cuvette containing a reagent, diluent, and patient sample solution. After the probe is flushed with diluent, the air knife drives any ... | 10/03/1989 |
| 4824641 | Carousel and tip An improved sample carrier and pipette tips for use in an automated sample handling device are disclosed. This carrier mounts on and is removable from a carousel and has spaced about the circumference of its body a plurality of apertures for receiving the... | 04/25/1989 |
| 4822569 | Rotary shear valve with cleaning feature and method of using same A rotary shear valve comprising two stators and a rotor is filled with specimen in a first rotary position. Movement of the rotor to a second rotary position divides the specimen into aliquots, one or more of which are dispensed in the second rotary posit... | 04/18/1989 |
| 4702889 | Liquid sampling valve A liquid diluting and transfer valve has disc like valve elements provided with faces frictionally engaged. The valve further includes passageways for passing both sample liquid and rinse liquid and a continuous groove formed in one of the respective face... | 10/27/1987 |
| 4690005 | Diluting dosage device Diluting dosage device, in which there is a dilution-liquid cylinder (20), a sample cylinder (30), a press knob (2), and a blocking valve (21). When the knob is depressed, the blocking valve is closed and the pistons (16 and 15) in the cylinders move rear... | 09/01/1987 |
| 4659677 | Method providing liquid mixing outside containers A device and method are described for forming a drop of two liquids pendent each from a separate platform. Means are included for moving the platforms from a spaced-apart position to one in which the drops contact each other and coalesce, while still pend... | 04/21/1987 |
| 4633413 | Digital dilution apparatus and method Digital dilution apparatus is disclosed which performs multiple processing functions such as pipetting, diluting, titrations and the like under microprocessor control. The apparatus is responsive to operator-entered processing requests and performs comple... | 12/30/1986 |
