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6407546 |
Non-contact technique for using an eddy current probe for measuring the thickness of metal layers disposed on semi-conductor wafer products
A method and system for identifying thicknesses of inspection samples, such as semiconductor wafers is presented. The method and system includes a probe housing, comprising an eddy current sense...
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6396253 |
Methods and apparatus for automated repair detection of solid-state X-ray detectors
A method for detecting cut data lines in an imaging array having a detector including an array of pixels for measuring radiation, and a plurality of data line contacts is provided. The method...
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6392417 |
Arrangement and method for detecting the end of life of an aqueous bath utilized in semiconductor processing
Arrangement and method for detecting the end of life of an aqueous bath utilized in semiconductor processing, the bath containing water, an amount of hydrogen peroxide and an amount of a...
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6383451 |
Electric resistance sensor for measuring corrosion rate
The present invention relates to an electric resistance sensor for measuring a corrosion rate, and in particular to an electric resistance sensor for measuring a corrosion rate which can measure a...
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6367679 |
Detection of flux residue
Detection of flux residue remaining the formation of a device/substrate assembly is carried out by contacting the assembly with a fixed amount of solvent adapted to remove residual flux from the...
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6333632 |
Alternating current discharge ionization detector
A discharge ionization detector (DID) includes a sensor that uses an alternating current (AC) discharge through a working gas as an ionization source. The sensor includes a discharge chamber, into...
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6323632 |
Solid state RF oscillator-detector for flow cytometer
A junction field effect transistor (JFET) RF oscillator-detector circuit generates an RF signal for an apparatus for conducting electrical measurements of particles contained in a carrier fluid...
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6307380 |
Distance measuring apparatus
While a high-frequency pulse is introduced at one end of a parallel conductor which is simulated as in an impedance equivalent state, an impedance mismatch generator is mounted to an intermediate...
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6300754 |
Circuit for an NOx measurement sensor
The pump currents in an NOx measurement sensor are generated by voltage-controlled current sources. Instead of the respective pump current, a setting voltage received by the voltage-controlled...
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6288554 |
Method for inspecting hermetically sealed package
An inspection method for inspecting hermetically sealed packages for pinholes, in which when a hermetically sealed package whose contents such as electrically conductive fluid or powder or food are...
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6288527 |
Two-dimensional sensor using laps for measuring cell activity
A two-dimensional sensor is described including a substrate having a Si layer, a SiO 2 layer and a Si 3 N 4 layer. On the surface of the Si back side, a thin film is formed by vapor deposition...
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6288528 |
Method and system for evaluating a condition of a combustion vessel
There is provided a method and system for evaluating a condition of a surface of a combustion vessel exposed to deposition thereon of a material released during a combustion of a fuel in the...
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6285179 |
Detecting apparatus and detecting method of absorbed hydrogen amount in hydrogen absorbing tank
This invention relates to a detecting method and a detecting apparatus for detecting an absorbed hydrogen amount in a hydrogen absorbing tank. An object of the present invention is to to provide a...
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6281670 |
Two-dimensional sensor having photoconductive layer for measuring cell activity
A two-dimensional sensor includes a photoconductive layer whose conductivity increases at a light-irradiated spot, an insulating layer formed on the front surface of the photoconductive layer, an...
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6281671 |
Electrode component group for a corrosion measuring system for detecting corrosion in a metal embedded in a component made of an ion-conducting material, in particular concrete
An electrode component group for a corrosion measuring system for detecting corrosion of a metal embedded in a construction component of ion-conducting material has a rod-shaped base body having a...
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6277771 |
Reinforcing carbon fiber material, laminate and detecting method
A sheet-shaped carbon fiber base material is made up from reinforcing carbon fiber and metal wire integrally formed into a carbon fiber base material which may be a a woven fabric, a tow sheet and...
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6265884 |
Electrical conductivity gem tester
It has been learned that moissanite and other synthetic stones, including synthetic moissanite and synthetic diamond, are distinguishable from natural diamonds based on differing electrical...
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6246244 |
Method and device for measuring axial deviation in a taut wire alignment system
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6242928 |
Method and apparatus for detecting resistance of oxygen concentration sensor
The resistance of an air-fuel-ratio sensor element is determined from current detected before changing an applied voltage to the sensor and current detected when a predetermined period elapses...
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6232783 |
Method for monitoring an aqueous flow using selective film
A method and apparatus for detecting contaminants in an aqueous flow. The method includes the steps of providing a conduit having at least one collection portion upon which is disposed a selective...
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6204668 |
DC/RF blood cell detector using isolated bridge circuit having automatic amplitude and phase balance components
A differential DC/RF bridge-configured flowcell particle detector includes a flowcell and an adjustable circuit model of the flowcell, which are differentially coupled through output amplifier...
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6194890 |
Method and apparatus for monitoring physical integrity of a wall in a vessel
An apparatus and method is described for monitoring the physical integrity of a vessel, such as a molten metal reactor. The apparatus includes a vessel for containing an electrically-conductive...
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6166538 |
Autoclave cycle monitor for autoclaved instruments
An electronic autoclave cycle passively records the number of thermal cycles to which an instrument has been subjected in a steam autoclave. When a sterilization cycle has been completed, and the...
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6166551 |
Method for monitoring the state of microcrystalline change of solid materials
A process for monitoring the state of microcrystalline change of solid materials, by observing the frequency of a load-pull oscillator which is RF-coupled to the material under test (preferably by...
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6151969 |
Electromechanical and electrochemical impedance spectroscopy for measuring and imaging fatigue damage
EIS and EMIS methods of assessing the fatigue status of a material. The EIS method uses an electrochemical transducer cell to apply electrical perturbations to the material, and to acquire voltage...
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6150812 |
Detection of electromagnetic fields as a determinant of an event
Method and apparatus for detecting or analyzing chemical reactions, such as an enzyme reaction, and other events in which electron translation is accompanied by photon emission utilizing a...
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6137282 |
Time-domain reflectometry user input device
A user input device is disclosed adapting the electronic components of a time-domain reflectometry material level sensor to replace traditional user input devices such as push-buttons, control...
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6132593 |
Method and apparatus for measuring localized corrosion and other heterogeneous electrochemical processes
An electrochemical method for measuring localized corrosion and other heterogeneous electrochemical processes is described. A multi-sensor electrode namely the wire beam electrode, integrated by...
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6127185 |
Instrument and method for measurement of stability of oils
The present invention relates to an instrument and methods for determining stability of oils and fats. The instrument includes a sample reaction vessel for containing a sample of an oil or fat, a...
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6109098 |
Particle size distribution and zeta potential using acoustic and electroacoustic spectroscopy
A device is described which combines Acoustic and Electroacoustic spectrometers to characterize both particle size distribution and zeta potential for concentrated dispersed systems. The Acoustic...
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6099718 |
Method and device for checking and characteristics of a surface layer of a zirconium-alloy element and use for the checking of fuel rods for a nuclear reactor
A sinusoidal voltage is appied to a zirconium alloy clad fuel rod. The current is measured and the impedance is determined to provide a check for the compactness and adhesion of an oxide surface...
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6090267 |
Methods and apparatus for quantitative analysis of a sample
Methods for determining the amount of volatile electrolyte present in an aqueous liquid sample comprise transferring the electrolyte from the aqueous liquid sample to an absorber solution across a...
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6086724 |
Method for forming particulate reaction and measuring method thereof
Particulates are trapped by laser beam and brought into contact with electrodes to electrochemically and spectroscopically measure the reaction process thereof. Precise measurement of the process...
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6087837 |
Compact high resolution under wire water weight sensor array
A measurement apparatus for sensing three properties of materials including a fixed impedance element coupled in series with the sensor array between an input signal and a reference potential (e.g....
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6084392 |
Electrode assembly
An electrode assembly (1) for resistive pulse spectroscopy comprises two flat electrodes (3) substantially equal in size and shape and supported in face-to-face, parallel relationship to one...
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6084418 |
Method for accurately detecting sensor element resistance
An air-fuel ratio sensor generates linear air-fuel ratio detection signals proportional to concentration of oxygen in exhaust gas from an engine in response to a command voltage from a...
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6078179 |
Selective polarization matching filter for triggering and maximizing rapid dielectrokinesis response
A composition of matter utilizes an exact dielectric replicate matching reference material to make a detection device component that triggers and maximizes a dielectrokinesis (phoresis) phenomena...
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6078178 |
Water quality indicating apparatus having self-cleaning test probes
Water purity indicating apparatus is adapted to operate on AC input power and includes a housing and a pair of test probes extending from the housing for measuring a resistance of water. Also...
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6072308 |
Particle size analyzer
The application describes a particle size analyser comprising a horizontally held close-coiled helical spring which is partly filled with the powder under test. The operation of the technique...
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6072309 |
Paper stock zeta potential measurement and control
System and method for producing paper that employ an apparatus for measuring electrical characteristics of a fibrous composition. The apparatus comprises a plurality of conductivity (or resistance)...
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6060877 |
Flat cathodic protection test probe
A flat cathodic protection test probe comprises a non-metallic probe body (20) with a mounted metal coupon (18) simulating a large coating holiday on a pipeline, an insulated wire(s) (22) attached...
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6057689 |
Apparatus and method for leak detection in a fluid-filled balloon useful to treat body tissue
An apparatus for detecting leaks in a fluid-filled device used to treat a patient's tissue includes an catheter having an expandable device defining a fluid reservoir about the distal end of the...
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6051977 |
Method and apparatus for locating coating faults on buried pipelines
A coating fault locating technique transmits a base electric signal from a power source to a buried metal pipe. A location of a coating fault in the buried pipe is detected by detecting a gradient...
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6037180 |
Method for measuring the quantity of a polymeric or pre-polymeric composition
A method for measuring the quantity of a polymeric or pre-polymeric composition within a given volume that includes combining the polymeric or pre-polymeric composition with a plurality of...
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6034520 |
Method of determination of active ions by electric conductivity and electric conductivity metering system therefor
Provided is a method and metering system for the determination of active ions emitted from certain active substances such as rayon fibers containing fine particles of tourmaline known to exhibit...
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6034531 |
Monitoring of the wear of sliding electrical contacts and its application to the state-dependent and/or predictive maintenance of a device having sliding electrical contacts
The method of monitoring the wear of at least one sliding electrical contact of a brush, sliding over a track which can move with respect to the brush, comprises the measurement of the electrical...
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6025734 |
Method of monitoring ion contamination in integrated circuits
A method of monitoring ion contamination in integrated circuits is disclosed. The method makes use of the electric field induced by bias voltages and the heating circuit provided in the integrated...
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6011476 |
Metering circuit to detect dielectrokinetic response
A current detector and metering circuit is provided for a dielectrokinesis detecting device. This device is particularly useful in the areas of locating obscured entities, such as human beings,...
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5990684 |
Method and apparatus for continuously monitoring an aqueous flow to detect and quantify ions
A method and apparatus for detecting contaminants in an aqueous flow. The method involves providing a conduit having at least one ion collection portion, disposing the aqueous flow through the...
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5980708 |
High sensitivity multiple waveform voltammetric instrument
A high sensitivity multiple waveform voltammetric method and instrument are provided for use in electrochemical and other applications. The method consists of applying one or several variable...
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