Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 8141410 | Method for testing pipettes The invention is directed to a method for testing batches of tips for pipettes, the method comprising the steps of calibrating a pipette to be tested with a recommended reference tip, fitting the pipette with a tip to be tested and performing a second calibration an... | 03/27/2012 |
| 8091405 | Device and method for calibrating a pipette or a dispensing system The present invention relates to a device (1) for calibrating a pipette or a dispensing system comprising a plate (2), said plate (2) comprising at least one channel (3) with a loading port (4) for receiving a test volume of a flui... | 01/10/2012 |
| 7810371 | Process and arrangement for calibrating and/or equilibrating single-channel and multi-channel liquid handling devices An arrangement and process for calibrating and/or equilibrating single-channel and multi-channel liquid handling devices, wherein a dispensing volume of a liquid is dispensed via the dispensing channels of a liquid handling device into a measurement chamber of a mea... | 10/12/2010 |
| 7779666 | Method for checking the condition of a sample when metering liquid A method for controlling the dispensation of a liquid volume sample when metering amounts of liquid by sucking into a tube, probe or tip a volume of a liquid to be displaced and ejecting the sample to a different vessel. According to the method the metering act is p... | 08/24/2010 |
| 7640787 | Pipette verification device and pipette Pipettes, widely used in clinical and pharmaceutical laboratories to transfer small volumes of liquid, may be subject to hidden performance degradation and operator error. Pipette performance cannot be accepted without monitoring. The present disclosure concerns a v... | 01/05/2010 |
| 7607336 | Method for determining the individual control voltage of a piezoelectric element In a method for ascertaining the control voltage of a piezoelectric element, the voltage drop at the piezoelectric element following a charge process is measured and the control voltage of the piezoelectric element is inferred from this voltage drop. ... | 10/27/2009 |
| 7584644 | Calibrator for fuel pump The inventive device comprises scaled vessels mounted on a vehicle and making it possible, while filling a liquid medium in the vessels, to recycle the vapors thereof through a circuit of casings beginning form he reading sights of the vessels and extending to an ai... | 09/08/2009 |
| 7500377 | Tool for calibrating granular dispensers and method incorporating the same A tool is provided that is adapted to calibrate a dispenser operative to dispense a selected granular material received from the interior of a receptacle. The tool may include a handle extending longitudinally from a first handle end to a second handle end along a l... | 03/10/2009 |
| 7429360 | Level-controlled pipette for automated analytic devices An automatic pipette in an analytic device uses disposable pipette tips, and in which proper coupling of the pipette tip to the pipette, accurate volume of the aspirated fluid, and distance of the pipette tip to a biochip are determined using a plurality of sensors ... | 09/30/2008 |
| 7353688 | Methods and systems for determining a position of a probe The present methods and systems include aligning at least two sensors with one or more known locations, selecting at least two of the at least two sensors, electrically driving the probe, based on signals received by the selected sensors, determining whether the pro... | 04/08/2008 |
| 7270013 | Dispenser volume determination method The present invention includes methods of determining the volume of liquid dispensed by a dispenser. Initially, a refractive index analysis is preformed on a first liquid that has been dispensed from the dispenser in question. From the refractive index analysis, inf... | 09/18/2007 |
| 7231805 | Bubble detection with temperature compensation Bubble detection apparatus and method for a liquid dispensing system includes temperature compensation for increasing accuracy of the bubble detection as temperature of the liquid varies. In one embodiment, temperature changes cause corresponding changes in the liqu... | 06/19/2007 |
| 7211534 | Preparation of a magnesium halide support for olefin polymerization and a catalyst composition using the same A magnesium halide support material for a polyolefin catalysts is disclosed. The magnesium halide of present invention is prepared by reacting magnesium with an alkylhalide in a non-polar hydrocarbon solvent. Preparation of the support does not require the use elect... | 05/01/2007 |
| 7205158 | Method for aspiration of a liquid sample A liquid aspiration method which includes aspirating partial aliquots of liquid at a number of different depths of penetration of a pipette tip into a liquid. The different depths are selected so that partial aliquot segments are obtained throughout the entire depth... | 04/17/2007 |
| 7204960 | Apparatus and method for calibration of a dispensing system The invention provides an apparatus and method for calibrating a dispensing system. A dispenser dispenses a controlled quantity of material into a container for receiving material. A system, preferably a vision system comprising an image capturing device and an imag... | 04/17/2007 |
| 7178745 | Dispense tip with vented outlets In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a directio... | 02/20/2007 |
| 7155319 | Closed loop control on liquid delivery system ECP slim cell A method for controlling liquid delivery in a processing chamber. The method includes generating an analog input (AI) signal proportional to a process variable and calculating an analog output (AO) signal based on a setpoint and a deadband. The setpoint is a target ... | 12/26/2006 |
| 7121152 | Portable flow measurement apparatus having an array of sensors A portable flow measuring apparatus measures the speed of sound and/or vortical disturbances propagating in a fluid flow to determine a parameter of the flow propagating through a pipe. The apparatus includes a sensing device that includes an array of pressure senso... | 10/17/2006 |
| 7114368 | Apparatus and method for verifying the volume of liquid dispensed by a liquid-dispensing mechanism An apparatus for improving the procedure for quantifying the volume of liquid dispensed by a liquid-dispensing mechanism of an analytical instrument. The apparatus of this invention comprises (a) at least one weigh cup; (b) at least one standard mass; (c) at least o... | 10/03/2006 |
| 7096710 | Method for monitoring the operational capability of a transport device and liquid transport device In a method for monitoring the operability of a liquid delivery device such as a dispenser (10), a response signal of a liquid-transformer system consisting of a transformer (24) and a chamber (12) containing a liquid is compared with a referenc... | 08/29/2006 |
| 7000853 | System and method for control of fluid dispense pump In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a directio... | 02/21/2006 |
| 6983636 | Apparatus and method for assessing the liquid flow performances through a small dispensing orifice A universal calibration apparatus and method to estimate the dispense output from a low volume, non-contact, liquid dispensing systems that may be applied for every hardware configuration (e.g., tube length, orifice diameter, tip design, etc), reagent solution prope... | 01/10/2006 |
| 6957783 | Dispense tip with vented outlets In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a directio... | 10/25/2005 |
| 6938504 | Method and device for evaluating a liquid dosing process The invention relates to a method for evaluating a liquid dosing process in a container which is at least partially filled with a gas. According to the inventive method, a temporal course of at least one state variable p of a medium contained in said container is de... | 09/06/2005 |
| 6916372 | Microvolume device employing fluid movement by centrifugal force A microfluidic device comprising: a substrate shaped so as to provide the device with an axis of rotation about which the device may be rotated; and a plurality of microvolumes at least partially defined by the substrate, each microvolume comprising a first submicro... | 07/12/2005 |
| 6902703 | Integrated sample-processing system The invention provides an integrated sample-processing system and components thereof for preparing and/or analyzing samples. The components may include a transport module, a fluidics module, and an analysis module, among others. ... | 06/07/2005 |
| 6874699 | Methods and apparata for precisely dispensing microvolumes of fluids Devices and methods for depositing fluids on substrates in patterns of spots, lines, or other features use a nozzle, which is preferably configured similarly to a micropipette, having a piezoelectric crystal or other ultrasonic actuator coupled to one of its sides. ... | 04/05/2005 |
| 6832620 | Apparatus for dosing lubricant into an air line An apparatus for dosing lubricant into a compressed air flow includes a lubricant container, a pneumatically operated lubricant pump, an injection channel, a non-return valve interposed between the outlet of the pump and the injection channel, and an electronic sens... | 12/21/2004 |
| 6819250 | Out-of-liquid sensor, and liquid supply device using same The present invention provides a highly universal out-of-liquid sensor that allows an out-of-liquid condition to be accurately detected for a long time, and provides a liquid supply device using the same. The out-of-liquid sensor 1, that is mounted in a liqui... | 11/16/2004 |
| 6814810 | Apparatus for calibrating a dispensing system The present invention is directed to methods and apparatus for accurately controlling the quantity of material dispensed from dispensing systems. In one aspect of the present invention, a dispensing system includes a calibration system, which collects and measures a... | 11/09/2004 |
| 6804985 | Calibration apparatus for multi-channel pipettes, including a transport device for receptacles An apparatus for the gravimetric calibration of multi-channel pipettes contains a balance that has a load receiver configured to support receptacles containing a substance to be weighed. The apparatus has a holder device to support a certain number of the receptacle... | 10/19/2004 |
| 6615638 | Device for the gravimetric testing of multichannel pipettes A device is described for gravimetric testing of multi-channel pipettes having two or more pipette channels. The device has one receptacle (9) per pipette for a test volume or for a container (2, 20) containing the test volume, and in addition, one weighi... | 09/09/2003 |
| 6601433 | Hand-held pipette Hand-held pipettes are provided which have automatic volume setting and either manual or power assisted piston operation. Power assisted piston operation may be achieved with a fly-by-wire operation wherein movement of a plunger button is detected and use... | 08/05/2003 |
| 6561005 | Procedure and device for acoustically detecting microparticles A procedure for detecting microparticles released by at least one dispenser, encompassing the following steps: (a) triggering the dispenser over an oscillation target (20) with a sensor material (21), so that at least one microparticle hits the sensor mat... | 05/13/2003 |
| 6484556 | Thin film detection during fluid aspiration The accurate determination of the presence of a fluid in a container is determined by assessing the difference in various pressure readings relative to a threshold value. The method distinguishes between actual aspiration of a fluid and aspiration of a fi... | 11/26/2002 |
| 6455787 | Method for determining the weights of liquid units, weighing insert and weighing arrangement For avoiding evaporation-related errors in the calibration of a dispenser by weighing liquid units delivered by said dispenser, an absorbent (9) in a weighing vessel (8) is arranged on a weighing pan (2) and binds the liquid units delivered onto said abso... | 09/24/2002 |
| 6412328 | Method and apparatus for measuring the size of drops of a viscous material dispensed from a dispensing system A method and apparatus for measuring and controlling the size of drops of viscous material dispensed from a dispensing system. A dispensing apparatus in accordance with embodiments of the present invention includes a housing, a dispenser that dispenses a ... | 07/02/2002 |
| 6370942 | Method for verifying the integrity of a fluid transfer A liquid aspiration method which includes a method for determining the quality of the aspirated sample through mathematical analysis of the pressure profile generated before, during, and after the aspiration process and comparison of the results with pred... | 04/16/2002 |
| 6260404 | Method for manufacturing a cylinder interior fuel injection valve and apparatus for adjusting a fuel injection amount used therefor A method for manufacturing a cylinder interior fuel injection valve and an apparatus for adjusting a fuel injection amount used therefor may sufficiently cope with a fluctuation in fuel pressure or combustion gas pressure that would occur in an actual eng... | 07/17/2001 |
| 6244094 | Closed loop calibrator and process of calibrating a liquid metering device in a closed atmosphere A closed loop calibrator and process for calibrating a liquid metering device in a closed atmosphere such that the liquid being metered is not exposed to the atmosphere. In one embodiment, a calibrator is disclosed which comprises a body member containing... | 06/12/2001 |
