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| Number | Title | Issue Date |
| 7980118 | System and method for estimating apparent viscosity of a non-newtonian fluid Method and apparatus for estimating an apparent viscosity of a non-Newtonian fluid. The results may be used for selecting equipment for pumping systems. ... | 07/19/2011 |
| 7334457 | Multi-capillary viscometer system and method This apparatus and method relates to the improved sensing of fluid differential pressures. The apparatus and method can be applied in multi-capillary solution viscometers and gel permeation chromatography systems used in the characterization of polymers. A valve is ... | 02/26/2008 |
| 7332087 | Flow sensing apparatus used to monitor/provide feedback to a split flow pumping system A method and apparatus for monitoring and controlling the nano-scale flow rate of fluid in the operating flow path of a HPLC system without relying on a nano-scale sensor in the operating flow path. A main flow sensor is disposed in the main flow path between the pu... | 02/19/2008 |
| 7331218 | Capillary bridge viscometer and method for measuring specific viscosity A bridge viscometer for measuring specific viscosity, ηsp(t), includes four capillaries, a delay volume, and a pressure transducer. The pressure transducer generates a signal indicative of a pressure differential, Δp(t), as a sample is introduced into t... | 02/19/2008 |
| 7237431 | Apparatus and method for measuring viscosity An apparatus and methods for analysis of a petroleum product, specifically determining the viscosity of a sample, are disclose. The apparatus includes a sample reservoir for receiving a liquid sample and a pressure regulator for applying hyperbaric pressure to a sam... | 07/03/2007 |
| 7234363 | Mass flow meter The invention relates to a mass flow meter for flowing media, which operates according to the Coriolis principle. At least one oscillator and at lest one sensor that detects Coriolis forces and/or oscillations based on Coriolis forces are mounted on a Coriolis measu... | 06/26/2007 |
| 7213439 | Automatic bridge balancing means and method for a capillary bridge viscometer A thermally controlled stage is connected within one arm of a bridge of a capillary bridge viscometer so that the bridge can be balanced in situ to provide accurate measurement signals. The thermally controlled stage includes a tuning capillary tubing portion that i... | 05/08/2007 |
| 7204264 | High pressure capillary micro-fluidic valve device and a method of fabricating same A freeze-thaw valve and a method of micro-machining the freeze-thaw valve is provided and includes a valve housing, wherein the valve housing defines a housing cavity and includes a housing inlet, a housing vent, a capillary tubing inlet and a capillary tubing outle... | 04/17/2007 |
| 7186336 | Flow sensing apparatus A method and apparatus for monitoring and controlling the nano-scale flow rate of fluid in the operating flow path of a HPLC system. A first flow sensor is disposed in a first flow path between a first flow-divider and a fluidic tee. A second flow sensor is disposed... | 03/06/2007 |
| 7134348 | Method for operating a mass flowmeter A method for operating a Coriolis mass flowmeter incorporates a measuring tube through which flows a medium and which is stimulated into oscillating at a minimum of one frequency, the resulting oscillations of the measuring tube being detected and measured. The visc... | 11/14/2006 |
| 7013740 | Two-phase steam measurement system A steam measurement system includes a Coriolis flowmeter associated with a vibratable flowtube to receive a flow of wet steam. A first sensor is associated with the flowtube to relay information about a motion of the flowtube by way of a first sensor signal. A secon... | 03/21/2006 |
| 6992590 | Systems and methods for sensing a fluid supply status A system that includes a container containing a fluid, a fluid line coupled with the container, and a pump configured to pump the fluid out of the container through the fluid line. The system further includes a sensor that includes a wireless transmitter. The sensor... | 01/31/2006 |
| 6990850 | Curtain coater rheology management A method and apparatus for accurately determining the rheology of a coating fluid and using this information to design application equipment and formulations, particularly for non-Newtonian fluids, including measuring the entrance transition effects for the fluid at... | 01/31/2006 |
| 6938463 | Method for affinity viscosimetry and viscosimetric sensor A method and apparatus for determining solute levels by affinity viscosimetry involving a sensitive fluid, in which the sensitive fluid flows continuously through a first hydraulic resistor in the flow direction of the dialysis chamber, and the sensitive fluid modif... | 09/06/2005 |
| 6928860 | Heat-transfer-inhibiting motor and rotor Heat-inhibition respecting a motor is provided in connection with a heated instrument through a stand-off mount system and/or a heat-inhibiting rotor/stirrer. The instrument can be a hot bath containing instrument where stirring of the contents of the bath can be ca... | 08/16/2005 |
| 6907772 | Dual riser/single capillary viscometer A blood viscosity measuring system and methods for measuring blood viscosity monitors the change in height of one of two, oppositely-moving, columns of blood from the circulating blood of a patient and, given the dimensions of a capillary tube through which the bloo... | 06/21/2005 |
| 6901789 | Method for determining parameters A method for determining parameters for the viscosity or temperature of a brake fluid of a vehicle by way of a predetermined pressure build-up within time limits in at least one defined section of a brake circuit and for detecting a pressure in the said section and/... | 06/07/2005 |
| 6877361 | Viscosimeter A viscosimeter for measuring the viscosity of a solution in a solvent includes flow resistances having the smallest possible thickness and a small volume compared with all other parallel and following capillaries in a flow conduit system with two legs. The flow cond... | 04/12/2005 |
| 6775626 | System for automatically selecting an oil pressure sensor processing algorithm based on oil pressure sensor type A system for automatically selecting an oil pressure sensor processing algorithm based on oil pressure sensor type includes an oil pressure sensing device producing an signal indicative of engine oil pressure, and electrically connected to one of an analog and a swi... | 08/10/2004 |
| 6745615 | Dual riser/single capillary viscometer A blood viscosity measuring system and methods for measuring blood viscosity monitors the change in height of one of two, oppositely-moving, columns of blood from the circulating blood of a patient and, given the dimensions of a capillary tube through which the bloo... | 06/08/2004 |
| 6708553 | Viscosimeter A viscosimeter for measuring the relative, intrinsic or inherent viscosity of a solution in a solvent with at least one flow resistance and one feeding point for the solution to be examined in a conduit system as well as with respective manometers on the flow resist... | 03/23/2004 |
| 6584830 | Viscosity measuring apparatus Apparatus for measuring the viscosity of a Newtonian fluid, includes a tubular housing which defines an internal cavity; a fluid restriction structure disposed in a first portion of the cavity; and a pressure measuring device disposed to measure the diffe... | 07/01/2003 |
| 6561011 | Apparatus and method for measuring the viscosity of plastic materials In an apparatus for measuring the viscosity of plastic materials including a heatable housing structure, enclosing a controllable material pump for generating a certain material flow, a plurality of capillaries, a melt distributor is provided in the suppl... | 05/13/2003 |
| 6412337 | Apparatus and method for measuring the rheological properties of a power law fluid The apparatus (10) is used for determining the consistency index (k) and the power law index (n) of a Newtonian fluid or non-Newtonian power law fluid. A method is also disclosed. Accordingly, the fluid flows in a laminar manner through a first (12) and a... | 07/02/2002 |
| 6386016 | Method and device for simultaneous determination of shear viscosity and extensional viscosity In a method for continuous or discontinuous measurement of shear and strain viscosities of Newtonian and non-Newtonian liquids, in particular structurally viscous liquids such as polymer melts and solutions and elastomers as well as other structural liqui... | 05/14/2002 |
| 6305212 | Method and apparatus for real time gas analysis A method and apparatus for real time gas analysis involving determining individual concentrations of fluid constituents in a mixture of known constituents by measuring properties of the mixture and solving a set of equations, which relate the individual g... | 10/23/2001 |
| 6279385 | Determination of isothermal secant and tangent bulk modules A method to measure both the isothermal secant and tangent bulk modules and the density of functional fluids. The instrumentation and methodology described in this invention use much smaller volumes of fluids which permits the measurement of these critica... | 08/28/2001 |
| 6237398 | System and method for monitoring pressure, flow and constriction parameters of plumbing and blood vessels The present invention provides a system and method of quantifying flow, detecting a location of an obstruction and quantifying a degree of the obstruction in a pipe characterized in pulsatile flow. The method includes the steps of (a) attaching at least t... | 05/29/2001 |
| 6158271 | Three capillary flow-through viscometer A method and apparatus for measuring the viscosity of a sample solution which comprises an input tube for transporting a sample solution flow towards a splitter for diverting input flow into two distinct flow streams where three capillary tubes are locate... | 12/12/2000 |
| 5877409 | Method and system for determining viscosity index A method and system for determining the viscosity index of a petroleum liquid. The determination may be made on a single, discrete sample or on a continuous sample stream. A sample is fed into a first pressure drop device where a first pressure drop is me... | 03/02/1999 |
| 5637790 | Three capillary flow-through viscometer A method in apparatus for measuring the viscosity of a sample solution which comprises an input tube for transporting a sample solution flow towards a splitter for diverting input flow into two distinct flow streams where three capillary tubes are located... | 06/10/1997 |
| 5394738 | Use of viscosity as an in-line diagnostic for high internal phase emulsion generation A lightweight absorbent foam is produced using a high internal phase emulsion (HIPE), the production of which incorporates the use of capillary viscosity measurements as an in-line diagnostic for HIPE quality. The in-line diagnostics yield measurements of... | 03/07/1995 |
| 5383352 | Method for the measurement of bulk modulus and pressure viscosity of liquids A method is disclosed for determining bulk modulus of a liquid based on a pressure-volume-temperature relationship at constant volume corrected for changes in system volume due to elevated pressure and temperature. The apparatus used to determine bulk mod... | 01/24/1995 |
| 5359881 | Viscometer for sanitary applications A viscometer for improved sanitary measurement of the viscosity of industrial fluids. The present invention provides a viscometer integral with a flow meter or a viscometer than can be mounted onto an existing flow meter. The viscometer includes two adjac... | 11/01/1994 |
| 5331843 | Capillary viscometer apparatus for an uncomplicated determination of flow characteristics of fluent materials A capillary viscometer apparatus comprises a measuring cylinder (3) having an axially-movable piston (2) which is moved by a drive (1). The measuring cylinder (3) and the piston (2) define a measuring space (4) which communicates with a capillary tube or ... | 07/26/1994 |
| 5327777 | Biorheological measurement A method of performing biorheological measurements on a suspension (4) of cells by causing some of the cells to pass through one or more microsize tunnels (3) in a solid medium (1, 2) under a pressure difference between the tunnel ends and monitoring (6) ... | 07/12/1994 |
| 5205158 | Sampling rheometer and method A rheometer and a method for measuring rheological properties of a fluid material, especially in an in-line arrangement in a manufacturing process, include capturing and confining a volume of the fluid material against movement within a chamber, advancing... | 04/27/1993 |
| 4905503 | Method and device for measuring the viscosity of a fluid A device for measuring the viscosity of a fluid is shown which can be used to continuously measure the viscosity of the ink used in an ink jet printer. The pressure between two restrictors which respond differently to a change in viscosity is related to t... | 03/06/1990 |
| 4790668 | Viscometric thermometer A viscometric thermometer is fabricated with two sensing capillaries connected serially in a common fluid flow circuit. The first capillary is immersed in a reference bath of known constant temperature. Pressure differential across the first capillary is ... | 12/13/1988 |
| 4677844 | Apparent viscosity measuring apparatus A measuring apparatus for conducting a method of testing an apparent viscosity of grease. In this apparatus, four capillary tubes are connected to a cylinder and these capillary tubes are selectively opened to atmosphere one after another by a switching m... | 07/07/1987 |
