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8029661 |
Method for on-line monitoring of wax crystallization
The determination of wax crystal particle size and population is used to monitor the performance of wax crystallizers used in lubricant oil processing using solvent dewaxing. The wax crystal...
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7777868 |
System for measuring non-volatile residue in ultra pure water
A system for monitoring non-volatile residue concentrations in ultra pure water includes a nebulizer for generating an aerosol composed of multiple water droplets, a heating element changing the...
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7583776 |
Portable multiplicity counter
A portable multiplicity counter has signal input circuitry, processing circuitry and a user/computer interface disposed in a housing. The processing circuitry, which can comprise a microcontroller...
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7457709 |
Systems and methods for particle counting
Systems and methods consistent with embodiments of the present invention provide a method for the measurement and analysis of particle counts in flow cytometry and hematology instruments. In some...
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7324694 |
Fluid sample analysis using class weights
Most automatic particle classification methods produce errors. The invention provides a method for improving the accuracy of particle classification while shortening the amount of manual review...
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6744245 |
Particle count correction method and apparatus
A method is disclosed which allows more accurate counting of particles where the sample has significant size variability between particles. The method uses flight time and wait time to obtain a...
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6690760 |
Unit counting device
A counting device with control system includes a housing with a rotating wheel therein. The wheel includes a plurality of seats for each item to be counted. Upon deposit of the items into the...
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6563901 |
Multi-head counting system with size discrimination
A counter unit counts discrete articles that are within a predetermined size range into lots having a predetermined number of articles. The counter unit includes (1) a first conveyor that delivers...
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6285730 |
Dust/particle monitor
The invention relates to dust/particle monitors, and particularly but not necessarily exclusively to a method of monitoring fine particles harmful to humans in working environments. Equipment and...
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6184983 |
Method and apparatus for measuring turbidity
A method of measuring turbidity includes irradiating specimen water with a light beam, using photoelectric conversion means for subjecting to photoelectric conversion the light scattered by fine...
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6061130 |
Apparatus for determining the particle size distribution of a mixture
An apparatus for determining the particle size distribution and for characterizing the particle shapes of a particle mixture has a metering device for classifying a particle mixture supplied in a...
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6034769 |
Method and device for counting and measuring particles
A device for counting and measuring particles provides an analysis of the particle characteristics and includes a processing system 27, comprising a control subsystem 13, including a microprocessor...
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5828716 |
Procedure for identifying the number of particles that are weakly luminescent
The present invention relates to a procedure for counting faintly luminescent particles, and relates specifically to a procedure for counting cells and microorganisms marked with a colored or...
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5768327 |
Method and apparatus for optically counting discrete objects
An object counter includes a feeding funnel having a frustroconical section, the narrow end of which is coupled to a substantially vertical feeding channel having a substantially rectangular cross...
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5684584 |
Apparatus for analyzing cells in urine
The present invention relates to an apparatus for automatically analyzing cells in urine using flow cytometry. The present invention includes means for converting scattered-light signals indicative...
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5671262 |
Method for counting and dispensing tablets, capsules, and pills
There is provided a method for counting and dispensing pills, tablets, and capsules which depends on a simple vibrating, sloped, concave-shaped (e.g., V-shaped) trough, having a number of...
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5619333 |
Flow contamination monitor
The invention relates to a portable on-line fluid contamination monitor. An inlet and an outlet are provided for connecting the monitor to a fluid control circuit and a measuring device is included...
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5583635 |
Method of measuring particles and apparatus for the same
The present invention provides a method of measuring particles and an apparatus for the same, which count only particles in liquid by distinguishing between the particles and bubbles in liquid. In...
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5464752 |
Automated analyzer for screening cells or formed bodies for enumeration of populations expressing selected characteristics
A method and apparatus for automatically and rapidly, retrieving, counting and/or analyzing at least one selected white blood cell population and/or subset thereof of a whole blood sample or...
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5426501 |
Apparatus and method for particle analysis
Apparatus and a method are disclosed for determining the sizes of particles entrained in a fluid over a relatively wide range of sizes and determining the distribution of particles in a plurality...
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5317645 |
Method and apparatus for the recognition and counting of discrete objects
An apparatus for counting discrete objects of various sizes and shapes as they travel through the apparatus in a disorderly flow. The apparatus includes a sensor array which comprises a plurality...
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5309215 |
Procedure for the determination of particle size distribution in particle mixtures
A method for automatic particle size analysis of a particle mixture by linear, optoelectronic scanning of a separated particle stream. Particle chord length categories are counted and converted to...
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5260192 |
Method and apparatus for screening cells or formed bodies with populations expressing selected characteristics utilizing at least one sensing parameter
A method and apparatus for automatically and rapidly, retrieving counting and/or analyzing at least one selected population of cells or formed bodies, such as a white blood cell population and at...
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5098657 |
Apparatus for measuring impurity concentrations in a liquid
An apparatus for measuring nonvolatile residue concentrations in liquid is disclosed. A plurality of fixed and adjustable flow restrictive elements are utilized and arranged in-line from a fluid...
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5090808 |
Particle measurement apparatus
A particle measurement apparatus is disclosed in which a laser beam is projected at a sample containing particles to be measured in a measurement zone and light scattered by particles in the sample...
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5059395 |
Particle analyzing apparatus
In particle analysis applied to blood cells, use is made of a distinguishing parameter which is the ratio of pulse height to pulse width derived from individual pulses generated in response to...
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5033095 |
Scanning image analyzer for accumulating quantifiable contaminants of webs
A microcomputer based digital analysis system is disclosed which includes a microcomputer and a flatbed optical scanner to analyze test sheets of paper fabricated from a batch of pulp to be tested....
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5023054 |
Blood filter and apparatus for hemorheological measurement
A filter and filtering apparatus for measuring the deformability of a blood cell passing through a flow passage formed as a space between a surface of a groove formed in a first substrate and a...
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4938592 |
Beam forming and sensing apparatus for aerodynamic particle sizing system
Apparatus, intended primarily for use in an aerodynamic particle sizing system, for generating a pair of closely-spaced, substantially parallel light beams and for determining particle sizes by...
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4933884 |
Method of and apparatus for determining threshold values for the analysis of particles contained in a liquid
The apparatus for analyzing particles in a particle containing fluid, especially pretreated liquids containing blood samples, contains storage devices and computing sections for determining...
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4931963 |
Self-diagnosis method for a bank note depositing and dispensing machine
Diagnosis data for respective portions of an apparatus are collected from respective sensors provided on the apparatus at the respective portions thereof and stored in a memory for each of the...
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4893320 |
Apparatus for counting particles attached to surfaces of a solid
An apparatus for counting particles attached to surfaces of a solid is disclosed which includes an external tank, an internal tank disposed within the external tank for hermetically accommodating a...
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4778657 |
Apparatus for determining the characteristics of particles suspended in liquids
An apparatus for determining various characteristics of particles suspended in a liquid, e.g., the deformability or other values of red blood corpuscles. The particles are transported by a method...
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4765737 |
Cell size measurements using light in flow cytometry and cell sorting
In a flow cytometer where the laser beam is larger than the size of each biological cell of a column of cells being passed through the laser beam at a high rate wherein new and improved method and...
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4747685 |
Biological microparticle inspection apparatus
A biological microparticle inspection apparatus has a reactor in which blood containing T cells is mixed with latex-labeled antibodies and T cells are coupled with the antibodies to form complexes....
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4710021 |
Particulate matter analyzing apparatus and method
A method and apparatus for jetting a measured volume of a suspension of particulates such as blood cells or colloids into a single fluid-primed incompletely partitioned transducer chamber in such a...
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4683579 |
Method and apparatus for measuring blood constituent counts
Blood constituents such as red cells, white cells, and platelets are centrifuged into layers in a capillary tube and the true extent of one or more of the layers is measured photometrically. Each...
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4596464 |
Screening method for red cell abnormality
Red cell samples are passed through a zone of focused illumination, and a scatter vs. time pulse is obtained for each. Each pulse is analyzed for pulse width, pulse area, and pulse shape. These...
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4580093 |
Method and apparatus for correcting coincidence errors during counting of two types of particles
During a predetermined measuring time there are generated electrical pulses in a detector arrangement, each of these electrical pulses corresponding to a respective particle which is to be counted....
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4491926 |
Particle size distribution analyzer
A particle size distribution analyzer includes a detector adapted to detect particles by electrical or optical differences from a medium containing the particles in dispersion and generate signals...
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4485442 |
Cumulative exposure metering system
An electron dosimeter system which measures the length of time that an individual, or object, is exposed to discrete strength levels of a stimulating medium. The dosimeter device is comprised of a...
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4477917 |
Digital disdrometer
A plurality of thin, conductive wires are stretched across the open center of a frame through which the liquid drops to be measured will fall. Adjacent wires are maintained at a potential...
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4453226 |
Method and apparatus for particle size determination in a host material
A method and apparatus for determining the size distribution of certain particles, of a particular composition, such as iron sulfide (pyrites), in a sample of host material, such as coal. Data...
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4447883 |
Coincidence-error correcting apparatus and method
New and improved method and apparatus for the correction of coincident errors attendant the automated detection and counting of mixed particles having detectable characteristics of different levels...
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4438390 |
Tandem sensing zones for improved signal-to-noise ratio in particle analyzer
A tandem arrangement of sensing zones is established by alternately arranged electrodes and dielectric plates, each sensing zone has a particle sensing aperture, through which microscopic particles...
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4420720 |
Field focused particle sensing zone
A particle analyzer wherein a flow of liquid suspension, having individually entrained particles, flows along a predetermined path; a center pair of electrodes are positioned on opposed sides of...
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4375615 |
Apparatus for counting particles in a liquid suspension
Apparatus for counting platelets and red blood cells in a whole blood sample includes an aperture type transducer. Alarm techniques are provided for indicating defects in the counting procedure due...
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4347438 |
Light transceiver device
An improved light transceiver device for use in alarm or counting systems. The transceiver is housed in a light tight housing and includes an adjustable mirror offset from the active element of the...
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4314346 |
Auxiliary apparatus for a particle analyser
An auxiliary apparatus for a particle analyzer for measuring the particle count within particle size intervals bounded by shiftable or displaceable thresholds. Infeed lines conduct the signals...
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4312180 |
Detecting particles
Apparatus 30 for detecting the presence of more than a negligible concentration of dust or other particles in a moving stream of air or other gas (31), comprising first (1) and second (2)...
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