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8176773 |
Piezoelectric sensor and sensing instrument
To provide a piezoelectric sensor in which a first electrode for measurement and a second electrode for reference are provided apart from each other on one surface side of a piezoelectric piece and...
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8176772 |
Piezoelectric sensor and sensing instrument
A piezoelectric sensor senses a substance to be measured in a sample solution, thereby conducting high-precision measurement. A pressing member has a solution storage space with a bottom surface...
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8180582 |
System and method for sensing liquid levels
A system for detecting a presence of a liquid within a receptacle includes a sensor and a processor. The sensor includes a transmitting probe and a receiving probe positioned within the liquid...
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8171798 |
Acoustic liquid dispensing apparatus
A liquid dispensing apparatus for dispensing droplets of a liquid, and methods for measuring various fluid parameters of the liquid are described. The liquid dispensing apparatus comprises a...
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8166812 |
Vibrating wire viscometers
Vibrating wire viscometers are disclosed. An example apparatus to determine the viscosity of a downhole fluid is described, the apparatus including a wire to be immersed in a downhole fluid, to...
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8156792 |
Method and apparatus for ascertaining and/or monitoring a process variable
A method for ascertaining and/or monitoring a process variable, wherein a time-limited, exciting signal, which is described by at least one desired quantity, or by a desired signal form, is applied...
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8069706 |
Waste water immersion probe
The invention relates to a waste water immersion probe (10) comprising a liquid-tight housing (11), a sensor (18) which is disposed in the housing (11) and a sensor window (20) formed on the...
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8065907 |
Apparatus and method for continuous measurement of a physical property of a drilling fluid
A testing apparatus comprising a chamber having an inlet and an outlet (16); a measuring device, at least a part of which is provided within the chamber; where the inlet is arranged to direct fluid...
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8056398 |
Broad-range nanoliter rheometer
A nanoliter rheometer is capable of operating over a wide range of temperatures and permits visual observation of extremely small amounts of various often complex and/or expensive small nanoliter...
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7975530 |
Oscillating sensor and fluid sample analysis using an oscillating sensor
An assembly design for an oscillating resonator-based sensor where an oscillating crystal resonator such as a quartz crystal resonator is rigidly affixed or ‘mounted’ onto a solid substrate in suc...
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7938030 |
Analytical device
An analytical device according to the present invention comprises a liquid accommodating chamber 9 for accommodating a sample solution of a quantity required for analyzing; a volume measuring...
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7914203 |
Method and system for measuring physical parameters with a piezoelectric bimorph cantilever in a gaseous or liquid environment
A piezoelectric bimorph cantilever is used for determining physical parameters in a gaseous or liquid environment. The sensor works as a driven and damped oscillator. Contrary to common cantilever...
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7900505 |
Acoustic assessment of fluids in a plurality of reservoirs
The invention provides devices and methods for acoustically assessing the contents in a plurality of reservoirs. Each reservoir has a portion adapted to contain a fluid, and an acoustic radiation...
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7899645 |
Acoustic assessment of characteristics of a fluid relevant to acoustic ejection
Methods are provided for analyzing characteristics of fluids in the context of an acoustic ejection system. Such a system has a controller, an acoustic radiation generator, and a coupling medium...
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7878044 |
Sensor, system, and method, for measuring fluid properties using multi-mode quasi-shear-horizontal resonator
A system and a method for providing information on two of the three variables, density (ρ), viscosity (η), and elastic modulus (c) of a fluid, such that independent knowledge of one variable a...
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7865317 |
System and method for measuring a fuel level in a vehicle fuel tank
A fuel measurement system and method that can determine the fuel level in a vehicle fuel tank, even when the fuel is sloshing, splashing, or experiencing other dynamic conditions. Generally...
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7811525 |
Methods and systems for modulating acoustic energy delivery
The present invention provides systems, methods, and devices for using acoustic energy. In some embodiments, a fluid bath may be provided in the system where the fluid bath quality may be monitored...
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7802466 |
Oscillating sensor and fluid sample analysis using an oscillating sensor
An assembly design for an oscillating resonator-based sensor where an oscillating crystal resonator such as a quartz crystal resonator is rigidly affixed or ‘mounted’ onto a solid substrate in suc...
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7788979 |
Monolithic antenna excited acoustic transduction device
A Monolithic Antenna Excited Acoustic Transduction (MAEAT) device is fabricated by photolithographically depositing a metallic antenna on one side of a piezoelectric crystal substrate.
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7792611 |
Spray pattern characterization and monitoring method and system
The purpose of the invention is to provide a method to characterize a spray pattern by detecting and quantifying asymmetries resulting in detailed information on location, size, and type of...
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7784329 |
Piezo-rheometric measuring cell and corresponding piezo-rheometer
The invention relates to a piezo-rheometric measuring cell for shear or compression measurement, essentially comprising two sample holder plates, with the sample for analysis between the same in...
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7784331 |
Acoustic determination of properties of reservoirs and of fluids contained therein
The invention provides devices and methods for acoustically determining the properties of the contents of one or more reservoirs in a plurality of reservoirs. Each reservoir is adapted to contain a...
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7765854 |
Microcantilever stress sensor for fluid analysis
This invention relates to a microcantilever stress sensor for detecting and quantifying low levels of contaminants in liquids and gases. The invention uses a chemical agent to impart chemical...
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7694552 |
High quality factor resonators for liquid immersion biological and chemical sensors
A mechanical resonator capable of providing an intrinsically high mechanical quality factor in immersion is provided. The resonator includes a membrane attached at its perimeter to a frame, such...
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7681449 |
Metal loss rate sensor and measurement using a mechanical oscillator
The present invention is a mechanical oscillator metal loss sensor for use in a corrosive or erosive environment. The elements include a mechanical oscillator that is mechanical excited with two...
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7677087 |
Quartz sensor and sensing device
Provided is a Angevin type quartz sensor which is high in measurement sensitivity, suppresses the influence of the surface tension of a sample solution during measurement, and enables an installed...
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7631544 |
Flow analysis system
A flow analysis flow analysis system having a deaerator for removing gas bubbles in a liquid upstream an analysis section. The deaerator comprises a liquid-containing means variable in internal...
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7603889 |
System for monitoring and controlling unit operations that include distillation
Fluid sensor methods and systems adapted for monitoring and/or controlling distillation operations in fluidic systems, such as batch distillation operations or continuous distillation operations,...
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7584649 |
Sensor with microelectro-mechanical oscillators
A sensor is provided which is configured to detect the presence of multiple analytes, for example chemical or biological compounds, through the measurement of induced resonance shifts in a coupled...
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7579052 |
Method of making gold thiolate and photochemically functionalized microcantilevers
Highly sensitive sensor platforms for the detection of specific reagents, such as chromate, gasoline and biological species, using microcantilevers and other microelectromechanical systems (MEMS)...
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7562557 |
Flexural resonator sensing device and method
A flexural resonator includes a piezoelectric material. At least a portion of an electrode having a first surface and a second surface is embedded in the piezoelectric material such that the...
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7555952 |
Sensing device
The present invention prevents instability of frequency measurement caused by spatial connection between quartz sensors adjacent to each other when a plurality of quartz sensors, including a quartz...
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7555938 |
Thermoelastic self-actuation in piezoresistive resonators
Systems and methods for thermally actuating piezoresistive cantilevers are described. One embodiment includes a nanoelectromechanical resonator connected in at least one location to a substrate, an...
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7516655 |
Downhole fluid characterization based on changes in acoustic properties with pressure
Techniques for evaluating physical aspects of a formation fluid from within a wellbore include changing pressure on a sample of the formation fluid and transmitting at least one acoustic pulse...
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7500379 |
Acoustic wave array chemical and biological sensor
An acoustic wave sensor array device is provided for the detection, identification, and quantification of chemicals and biological elements dispersed in fluids. The sensor array device is capable...
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7484414 |
Method and apparatus for determination of the concentration of particles in multi-component fluid systems
A method for determining the concentration of a large particle component in a multi-component system. The method requires first separating and concentrating the large particle component of the...
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7454958 |
Acoustic determination of properties of reservoirs and of fluids contained therein
The invention provides devices and methods for acoustically determining the properties of the contents of one or more reservoirs in a plurality of reservoirs. Each reservoir is adapted to contain a...
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7437907 |
Sensor for detecting substance in liquid and apparatus for detecting substance in liquid using the same
In a sensor for detecting a substance in liquid, recesses are provided in the upper surface of a base substrate. The recesses respectively accommodate SAW elements. A resin layer having openings is...
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7437914 |
Microfluidic test systems with gas bubble reduction
A reservoir for use in testing a liquid as part of a microfluidic testing system, includes a testing chamber configured to receive the liquid to be tested. A liquid inlet is fluidly coupled to the...
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7426866 |
Acoustic liquid dispensing apparatus
A liquid dispensing apparatus for dispensing droplets of a liquid, and methods for measuring various fluid parameters of the liquid are described. The liquid dispensing apparatus comprises a...
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7426853 |
Apparatus for measuring concentration
A concentration measuring apparatus includes a vibration member; a shielding unit that limits a flowable area of a solution to be measured close to the vibration member; a vibration control unit...
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7409851 |
Detection of small bound mass
Prefabricated catalyzing adsorption sites are incorporated into small oscillators. In one embodiment, the sites are formed of precisely positioned gold anchors on surface micromachined oscillators....
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7395712 |
Testing of bottomhole samplers using acoustics
A method and apparatus for testing a hydrocarbon sample. The apparatus includes a sheath disposed about the hydrocarbon sample container and at least one set of acoustic sensors, wherein the at...
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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...
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7383731 |
Deep-fry oil quality sensor
A cooking oil quality sensing apparatus and system includes an acoustic wave sensor composed of one or more acoustic wave transducers configured upon a piezoelectric substrate such that when the...
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7350402 |
Method and apparatus for determination of medical diagnostics utilizing biological fluids
A method for measuring changes in the composition of fluids, for medical diagnostics or quality control of fluids, comprising: One) placing a drop of fluid upon a quartz crystal;Two) generating...
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7350403 |
Method and apparatus for determination of food quality and authenticity
A method for analysis of a multi-component fluid is provided based on the features of the dynamics of the self-organization processes in drying drops. An electro-acoustic resonator is utilized,...
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7331232 |
Measurement method and biosensor apparatus using resonator
A measurement method and a biosensor apparatus using a resonator with which it is not necessary to agitate a sample solution in a cell and even if the amount of the sample solution is very small...
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7278294 |
System and method for determining atomization characteristics of spray liquids
A system and method for determining the atomization characteristics of fluids being emitted by a nozzle is disclosed. In one embodiment, a fluid is emitted through a nozzle while simultaneously...
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7257984 |
Miniaturized sensor device for detecting characteristics of a fluid, in particular a lubricating oil
A miniaturized sensor device comprises at least one pair of active projecting elements or cantilevers, which are set parallel to one another and at a micrometric or sub-micrometric distance apart...
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