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7389673 Sensor for detecting analyte in liquid and device for detecting analyte in liquid using the same  
A sensor for detecting an analyte in liquid includes a base substrate provided with openings and electrode lands on one surface thereof and SAW elements each provided with a sensing portion having...
7373805 Apparatus for directing particles in a fluid  
There is disclosed apparatus for directing particles entrained in a fluid, comprising a chamber having a first wall, including means for generating a sound wave having a frequency v, and a second,...
7334452 Method for characterizing materials by using a mechanical resonator  
Methods for monitoring a fluid composition include placing a mechanical resonator in the fluid composition and oscillating the resonator. The resonator can be a tuning fork resonator having tines...
7266990 Flexural plate wave sensor and array  
A method for manufacturing a flexural plate wave sensor includes the steps of depositing an etch-stop layer over a substrate, depositing a membrane layer over the etch stop layer, depositing a...
7260482 Ultrasonic characterization of high concentration particles  
A method for characterizing a suspension with particles floating therein, which method comprises the steps of generating an acoustic actuation signal and registering an acoustic reflected signal....
7171844 Apparatus and method for measuring the mass of a substance  
An apparatus for measuring the mass of a substance includes a sensor having a membrane layer, the membrane for receiving the substance thereon, an oscillator device for driving the membrane at a...
7165452 Measuring method, measurement-signal output circuit, and measuring apparatus  
A measuring apparatus for detecting a change in frequency of a piezoelectric vibrating reed is realized with a simple circuit. The circuit of the measuring apparatus includes a phase lock loop...
7140239 System and technique for ultrasonic characterization of settling suspensions  
A system for determining properties of settling suspensions includes a settling container, a mixer, and devices for ultrasonic interrogation transverse to the settling direction. A computer system...
7114375 Process monitoring and particle characterization with ultrasonic backscattering  
A fermention process is monitored by detecting ultrasound backscattered from the cells as a function of time. A transducer 46 is placed in a fermentor 30 and transmits ultrasound towards a...
7096719 Apparatus for measuring parameters of a flowing multiphase mixture  
An apparatus 10 is provided that measures the speed of sound propagating in a multiphase mixture to determine parameters, such as mixture quality, particle size, vapor/mass ratio, liquid/vapor...
7093482 System and method for detecting particles  
An acoustic detector based on rupture event scanning (“REVS”) with a detection setup allowing the monitoring of REVS signals near the driving frequency and with optimized impedance matching...
7073370 Method and apparatus for characterizing materials by using a mechanical resonator  
A method and apparatus for measuring properties of a liquid composition includes a mechanical resonator, such as a cantilever, connected to a measurement circuit. The mechanical resonator can be...
7072044 Apparatus for acoustic detection of particles in a flow using a fiber optic interferometer  
Fiber optic particle detector for measurements in a fluid flow, comprising an optical fiber ( 2,3,12 ) being acoustically coupled to a mechanical element ( 11,13,14 ) adapted to be acoustically...
7069776 Method for measuring particle concentration during injection pumping operations  
In a well bore operation in which a particulate is added to a fluid stream, a method of determining the concentration of said particulate in said fluid stream comprising the steps of measuring the...
7036375 QCM sensor and QCM sensor device  
A plurality of quartz crystal resonators having different resonance frequencies are connected in parallel. A combined admittance of the resonators is measured. Equivalent circuit constants of all...
7028538 Sand monitoring within wells using acoustic arrays  
A method for detecting the presence of particles, such as sand, flowing within a fluid in a conduit is disclosed. At least two optical sensors measure pressure variations propagating through the...
6990852 System and method for detecting particles  
An acoustic detector based on rupture event scanning (“REVS”) with a detection setup allowing the monitoring of REVS signals near the driving frequency and with optimized impedance matching...
6959589 Ultrasound analysis of slurries  
An autoclave reactor allows for the ultrasonic analysis of slurry concentration and particle size distribution at elevated temperatures and pressures while maintaining the temperature- and...
6957565 Method and apparatus for characterizing materials by using a mechanical resonator  
A method for measuring properties of a fluid that includes oscillating a tuning fork resonator in a fluid. The invention is particularly suitable for in-line monitoring of various physical and...
6945096 Measurement and control of asphaltene agglomeration in hydrocarbon liquids  
A method is provided for measuring the agglomerative state of asphaltenes in oil by applying an acoustic signal to the oil, detecting the scattered acoustic energy and using this detected signal to...
6945089 Mass-sensitive sensor  
In a mass-sensitive sensor consisting of an acoustic surface wave component on the basis of shear waves, the sensor includes a substrate with an active surface carrying two different layers, one...
6942782 Method and apparatus for measuring deposit forming capacity of fluids using an electrochemically controlled pH change in the fluid proximate to a piezoelectric microbalance  
A method and apparatus for measuring the deposit forming propensity of a continuously flowing fluid having a bulk pH of about 1 to about 12 comprising measuring the rate at which deposit forms on a...
6935165 Microscale sensor element and related device and method of use  
A monitoring apparatus useful in detecting viability of biological cells. A substrate defines a microscopic chamber. One or more microcantilevers extend from the substrate into the chamber. A...
6935164 Refiner control  
In the present invention a refiner ( 108 ) of a mechanical pulping line is supplied with a controllable acoustic source ( 14 ), arranged for emitting acoustic signals into the pulp fluid. The...
6910367 Method for determining particle size distribution and structural properties of concentrated dispersions  
A method is described which applies Acoustic Spectrometry to characterize both the particle size distribution and micro-rheological properties of the structured concentrated dispersions. It...
6874356 Method and device for monitoring and controlling a process  
A method and device for monitoring and controlling a pharmaceutical, chemical or food process, in which the biological activity and/or the bio-mass of micro-organisms in the process is monitored,...
6862536 Measuring system and a method for measuring particle velocity and/or particle velocity distribution and/or particle size distribution  
Measuring systems and methods measure particle velocity and/or particle velocity distribution and/or particle size or particle size distribution. The measuring system includes a filter for...
6826949 Method and apparatus for guiding a liquid sample towards a sensing surface  
A liquid sample sensing device comprises a set of stackable liquid sample base units that are adapted to be stacked together to form multiple sample volumes that are substantially sealed, each with...
6796195 Apparatus for determining particle size  
The invention provides a method and an apparatus for measuring the size, concentration and size distribution of particles in a fluid by determining the characteristics of an acoustic speckle signal...
6748815 Method for determining particle size  
The invention provides a method and an apparatus for measuring the size, concentration and size distribution of particles in a fluid by determining the characteristics of an acoustic speckle signal...
6698277 Method and apparatus for measuring concentration using acoustic speckle  
The invention provides a method and an apparatus for measuring the size, concentration and size distribution of particles in a fluid by determining the characteristics of an acoustic speckle signal...
6698276 Method and apparatus for determining particle size distribution by acoustic speckle  
The invention provides a method and an apparatus for measuring the size, concentration and size distribution of particles in a fluid by determining the characteristics of an acoustic speckle signal...
6684683 Method and apparatus for characterizing the barrier properties of members of combinatorial libraries  
A method and an apparatus for characterizing the barrier properties of an array of coatings. The method including providing a plurality of acoustic wave devices, wherein each of the plurality of...
6640625 Method and apparatus for measuring fluid density downhole  
Apparatus for determining the density of a fluid downhole includes apparatus for measuring compressibility of the fluid and apparatus for determining the speed of sound through the fluid. According...
6626026 Acoustic wave based sensor  
An apparatus that is configured to sense the presence of gases, vapors and liquids using acoustic waves. The apparatus comprises a first part that is configured to generate acoustic waves. The...
6622542 Bubble detector and method of use thereof  
A bubble detector utilizes an ultrasonic transducer to sample bubbles as they pass the transducer. The envelope of the return signal is analyzed to determine the volume of each sampled bubble. If...
6612156 Acoustic mixing and measurement system and method  
An acoustic measurement system detects solids within a fluid includes a sample cell 10 for containing the fluid, a first transducer 20 for outputting a first acoustic detection signal at a...
6604408 Device for use in determining characteristics of particles dispersed in a medium, and method therefor  
A device for use in determining the characteristics of particles dispersed in a medium is described. The device has a sample cell for holding a sample containing particles dispersed in a medium. A...
6598466 Method for additive adhesion force particle analysis and apparatus thereof  
A method including: sonicating a liquid suspension of first particles; and analyzing the liquid phase for second particles. An apparatus including: a sonicator adapted to sonicate a liquid...
6497140 Cavitation sensor  
A cavitation sensor includes an ultrasonically absorbent coating ( 20 ) disposed around a piezoelectric element ( 30 ) and a conduit ( 25 ). The conduit ( 25 ) includes a boundary delimited by the...
6481268 Particle measurement by acoustic speckle  
The invention provides a method and an apparatus for measuring the size, concentration and size distribution of particles in a fluid by determining the characteristics of an acoustic speckle signal...
6435013 Ferromagnetic particle sensor  
A ferromagnetic particle sensor includes a housing having a first electromagnet and a second electromagnet attached to the interior surface thereof. A mass sensitive surface acoustic wave (SAW)...
6415665 Ultrasonic probe and method for monitoring materials processing in screw driven extruders  
An ultrasonic probe and method for noninvasively monitoring materials processing in screw driven extruders. The noninvasive probe includes at least one ultrasonic transducer operable to transmit an...
6401538 Method and apparatus for acoustic fluid analysis  
A method is provided for analyzing suspended particulate and liquid medium in a fluid stream by transmitting acoustic signals into the fluid, detecting scattered acoustic energy, and determining a...
6401519 Systems and methods for characterization of materials and combinatorial libraries with mechanical oscillators  
Methods and apparatus for screening diverse arrays of materials are provided. In one aspect, systems and methods are provided for imaging a library of materials using ultrasonic imaging techniques....
6389877 Double-headed mass sensor and mass detection method  
There is provided a double-headed mass sensor ( 25 ) in which between a first connecting plate ( 22 A) joined to a first diaphragm ( 21 A) at respective sides and a second connecting plate ( 22 B)...
6375829 Method and apparatus for measuring scaling capacity of calcium oxalate solutions using an electrochemically controlled pH change in the solution proximate to a piezoelectric microbalance  
This invention is directed to a method and apparatus for measuring the rate of calcium oxalate scale formation in a continuously flowing solution having a pH of from about 2 to about 3 comprising...
6370939 Apparatus and method for measurement of mass and heat flow changes  
Provided are a measurement apparatus and a measurement system comprising sample and reference microresonators, such as sample and reference quartz crystal microbalances; sample and reference heat...
6354144 Zirconia porcelain  
A ZrO 2 porcelain comprising a cylindrical member and a flexible member made of a ZrO 2 porcelain which has a relative density not lower than 95% and contains a cubic crystal at a ratio not lower...
6324901 Process and device for recognizing foreign bodies in viscous or fluid, lump-containing foodstuffs  
A process and device are disclosed for recognizing foreign bodies in viscous or fluid masses with lumpy foodstuffs. The mass to be checked runs through a measurement section, in which, pulsed...
Matches 1 - 50 out of 143 1 2 3 >