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8395398 Method of characterizing particles  
Mixtures containing homogeneously-sized particles with a minimum concentration of agglomerates or larger particles are desired in various manufacturing processes such as, for example, in the...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...

Matches 1 - 50 out of 120 1 2 3 >