Patents
Patents for G01N 15 - Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials (29,551)
09/1979
09/04/1979US4166703 Testing of fibrous coalescer elements
08/1979
08/21/1979US4165484 Particle counting apparatus utilizing various fluid resistors to maintain proper pressure differentials
08/14/1979US4164139 Asphalt penetration indicator
08/14/1979US4164137 Method of measuring volume of air entrained in hydraulic fluids
08/07/1979US4163615 Reader for hematocrit value
08/07/1979CA1060122A1 Method and apparatus utilizing color algebra for analyzing scene regions
08/07/1979CA1059786A1 Method and apparatus for measuring density of suspension
07/1979
07/17/1979US4161690 Method and apparatus for particle analysis
07/10/1979US4160601 Biocontamination and particulate detection system
07/03/1979US4159895 Mean corpuscular volume and mean corpuscular hemoglobin
07/03/1979US4159639 Apparatus and method for measuring the degree of refining of pulp fibers in the preparation of furnish for paper making
06/1979
06/13/1979EP0002270A1 Device for separating erythrocytes
06/05/1979US4157499 Simultaneously counts red and white blood cells
06/05/1979US4157498 Flow-through type particle analyzing apparatus
05/1979
05/30/1979EP0002103A1 A blood cell counter having a purging system
05/29/1979US4156570 Apparatus and method for measuring white blood cell and platelet concentrations in blood
05/15/1979US4154529 System for detecting reflected laser beams
05/15/1979US4154090 Process and apparatus for multiple testing of wrappers of cigarettes or the like
05/15/1979US4154088 Apparatus for measuring the particulate matter content of a gas
05/01/1979US4151744 Method and apparatus for the measurement and control of viscosity of slurries
05/01/1979CA1053756A1 Particle analyzing system
04/1979
04/17/1979US4150360 Method and apparatus for classifying biological cells
04/17/1979US4149999 Antistatic liquid media, and method, for the controlled transport of microscopic particles
04/17/1979US4149402 Analytical method for determining desorption isotherm and pore size distribution of an absorbent material
04/10/1979US4148718 Applying electrical or radiant energy to fluid stream
04/10/1979US4148217 Evaluating surfactants
04/10/1979US4148215 Apparatus for making rheological measurements
03/1979
03/27/1979US4146788 Method and apparatus for quantitative structural analysis of solids
03/27/1979US4146604 Staining with mixture of fluorescent dyes and sensitizers
03/20/1979CA1050938A1 Single drop separator
03/13/1979CA1050660A1 Particle analyzer
02/1979
02/20/1979US4140966 Particle analyzing apparatus and fluid circulating system therefor
02/20/1979US4140902 Device for measurement of hair-like particulate material
02/20/1979US4140633 Method and apparatus for determining ultrafiltration during dialysis
02/20/1979US4140395 Electro-optical method and system for in situ measurements of particle size and distribution
02/20/1979US4140007 Suspended-solids meter
02/20/1979US4140005 Method and instrument for continuous monitoring of aerosols
02/13/1979US4139303 Adaptive coherent optical processing method and apparatus for recognizing and counting objects
02/06/1979CA1048006A1 Holder device for sample vials or the like at an analysis apparatus
02/06/1979CA1047793A1 Smoke density measuring apparatus
01/1979
01/30/1979US4136950 Microscope system for observing moving particles
01/30/1979CA1047603A1 Process to determine the dosage of the flocculant to be added to a liquid scheduled for treatment
01/23/1979US4135821 Calibration of optical particle-size analyzer
01/23/1979US4135819 Apparatus for measuring the aggregation rate of particles
01/23/1979CA1047111A1 Apparatus and method for measurement of total volume of particles in a liquid sample
01/16/1979US4134679 Determining the volume and the volume distribution of suspended small particles
01/09/1979US4133202 Multiple nozzle single stage impactor
01/09/1979CA1045960A1 Multi-purpose diluent for use in blood analysis by electronic instrumentation of the coulter type
12/1978
12/19/1978US4130754 Particle counting
12/19/1978US4130126 Ink maintenance sensor
12/12/1978US4129381 Apparatus and method for preparing a particle suspension
12/05/1978US4128884 Methods and apparatus for analyzing frequency distributions
12/05/1978US4128400 Centrifuge
12/05/1978US4128335 Condensation nuclei counter with automatic ranging
12/05/1978US4128004 Method and apparatus for determining permeability of filter media
11/1978
11/28/1978US4127808 Engine chip detector
11/28/1978CA1043123A1 Use of modulated stimulus to improve detection sensitivity for signals from particles in a flow chamber
11/14/1978CA1042511B Self-cleaning aperture tube for coulter study apparatus
11/14/1978CA1042229A1 Leaf filter test method for determining filtration characteristics of a fibrous slurry and apparatus for performance thereof
10/1978
10/31/1978US4123159 Apparatus for analyzing the size distribution and quantity of small particles in an aerosol
10/10/1978US4118974 Method and apparatus for measuring erythrocyte sedimentation rate
10/03/1978US4117717 Solid impurity detector
10/03/1978US4117715 Apparatus for measuring charge on, and density of, airborne particulates
10/03/1978US4117713 Particulography as an on-line technique for detection and location of faults within a gas-cooled dynamoelectric machine caused by overheating
09/1978
09/26/1978CA1039079A1 Measuring the concentration of substances suspended in a liquid
09/19/1978US4115143 Dust-free thermally stable lead chromate pigment composition and process of preparation
09/19/1978US4114427 Apparatus for accurately measuring the freeness of paper stock flowing in a feed pipe
09/12/1978US4113596 Method of measuring the mobility of colloids in an electrical field
09/12/1978US4112739 Process and apparatus for the isostatic measurement of the permeability of a material to the passage therethrough of a gas or vapor
09/05/1978US4112301 Moving particles suspended in a carrier fluid through a flow channel having an input end under gas pressure
08/1978
08/29/1978US4110604 Particle density measuring system
08/29/1978US4110043 Apparatus for counting and classifying particles
08/15/1978CA1036538A1 Electric surface area meter
08/15/1978CA1036386A1 Apparatus for determining the smoke density of flue gases of gas and fuel oil
08/15/1978CA1036385A2 Biological cell analyzing system
07/1978
07/25/1978US4103229 Continuous-flow, resistive-particle counting apparatus
07/25/1978US4102810 Stabilized hematological reagent solutions
07/25/1978US4102177 Densitometer
07/18/1978US4101383 Process for testing microparticle response to its environment
07/11/1978US4099871 Method and apparatus for determination of activated sludge volume index
06/1978
06/27/1978US4097845 Method of and an apparatus for automatic classification of red blood cells
06/27/1978US4097373 High speed particle sorter using a field emission electrode
06/20/1978US4095898 Particle analysis system with photochromic filter
06/20/1978US4095775 Particle evaluator
06/06/1978US4093849 Automatic blood analyzing system
06/06/1978US4092845 Lung simulating aerosol sampler
05/1978
05/30/1978US4092669 Apparatus for measuring spatial data from recorded images
05/16/1978US4090128 Aperture module for use in particle testing apparatus
05/16/1978US4089210 Device for measuring filtering properties of paper pulp
04/1978
04/25/1978US4086631 Hematocrit measurement in an automatic hematology analyzer
04/04/1978US4082457 Leukocyte detector
03/1978
03/21/1978US4080264 Immunoassay by light scattering spectroscopy
03/21/1978US4079621 Apparatus for determining the dust index of a particulate solid
03/14/1978US4078863 Measuring the concentration of substances suspended in a liquid
03/07/1978US4078211 Method and apparatus for balancing particle detecting signals generated in a particle study device having multiple apertures
03/07/1978US4077749 Sample ejection system including temperature control
02/1978
02/28/1978US4076419 Method and apparatus for hematology
02/21/1978US4075462 Particle analyzer apparatus employing light-sensitive electronic detector array
02/07/1978US4072767 Electrical signals
02/07/1978US4072421 Method and apparatus for optical discrimination of particles