| Patents for G01N 15 - Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials (29,551) |
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| 05/01/1990 | US4920792 Method for determining the amount of fluid in a core |
| 04/25/1990 | EP0364583A1 Method and device for analyzing thrombocyte aggregation |
| 04/25/1990 | EP0230441B1 Methods and devices for measuring the ratio of incondensables in a gas mixture |
| 04/25/1990 | EP0168403B1 Method for permeability measurement |
| 04/25/1990 | CA2001410A1 Method and apparatus for realtime asbestos aerosol monitoring |
| 04/24/1990 | US4920550 X-ray particle size analyzer |
| 04/24/1990 | US4920275 Particle measuring device with elliptically-shaped scanning beam |
| 04/24/1990 | US4919537 Method for optically detecting stratification in a sample |
| 04/24/1990 | US4918981 Quality control, waterproofing |
| 04/19/1990 | WO1990004175A1 A test method for determination of moisture vapor transmission rate |
| 04/18/1990 | EP0364083A2 Liquid-vapor change of phase detector |
| 04/18/1990 | CN2056250U Water permeability-investigating apparatus for polyester net |
| 04/17/1990 | US4918739 Process and system for digital analysis of images applied to stratigraphic data |
| 04/17/1990 | US4918004 Function of fluorescence intensity from labeled antibodies |
| 04/17/1990 | US4917496 Particle size measuring instrument with direct scattered light detection |
| 04/17/1990 | US4917494 Beam forming apparatus for aerodynamic particle sizing system |
| 04/17/1990 | CA1267790A1 Fiber optic doppler anemometer |
| 04/11/1990 | EP0362733A2 Ultracentrifuge for determining the size distributions of particles |
| 04/10/1990 | US4916384 Apparatus for measuring the soot particles contained in the exhaust gas emitted from diesel engines |
| 04/10/1990 | US4916325 Method and apparatus for the measurement of airborne fibres by the illumination of fibrous particles precipitated on a surface |
| 04/10/1990 | US4915501 Device for measuring the light scattering of biological cells in flow cytophotometers |
| 04/10/1990 | US4914810 Apparatus for measuring the pore size of enhanced tubes |
| 04/10/1990 | EP0276304A4 Method and apparatus for detecting incongruities, such as air bubbles, in fluid material. |
| 04/09/1990 | EP0269672A4 Device for measuring magnetic particles in a liquid. |
| 04/04/1990 | EP0361904A2 Turbidity meter |
| 04/04/1990 | EP0361770A2 Particle measuring method and apparatus |
| 04/04/1990 | EP0361504A2 Particle analyzing apparatus and method for determining nuclear shift index |
| 04/04/1990 | EP0361503A1 Particle analyzing apparatus and method for determining nuclear shift index |
| 04/03/1990 | US4914310 Method and apparatus for measuring particle concentration in a suspension |
| 04/03/1990 | US4912987 Measurement of sizes of falling particles |
| 04/03/1990 | US4912964 Sample supporting device having small contact region with sample suitable for ventilation-characteristics measuring apparatus |
| 04/03/1990 | CA1267464A1 Method and apparatus for detecting incongruities, such as air bubbles, in fluid material |
| 03/28/1990 | EP0360487A2 Method and apparatus for analysis of particles contained in a liquid sample |
| 03/27/1990 | US4911025 Method and apparatus for preparing a suspension for measurement |
| 03/27/1990 | US4911003 Method and apparatus for measuring the print quality of print media receiving ink jet inks |
| 03/27/1990 | EP0226631A4 Method and apparatus for editing particle produced electrical pulses. |
| 03/21/1990 | EP0359681A2 Characterization of particles by modulated dynamic light scattering |
| 03/21/1990 | EP0359589A2 Pulsed oriented electrophoresis |
| 03/20/1990 | US4909081 Systems for detecting magnetic particles in fluids |
| 03/14/1990 | EP0357668A1 Process and device for determining the soot content of flue gases. |
| 03/13/1990 | US4907448 Apparatus for measuring resistivity of porous rock |
| 03/13/1990 | CA1266603A1 Membrane invasion culture system |
| 03/07/1990 | EP0357466A1 Symplified lysis circuit for an automatic blood analysis system |
| 03/06/1990 | US4906936 Electric conductivity sensor for measuring the length and number of fibers in an aqueous suspension |
| 03/06/1990 | US4906094 Fine particle measuring method and system and a flow cell for use in the system |
| 02/27/1990 | US4905169 Method and apparatus for simultaneously measuring a plurality of spectral wavelengths present in electromagnetic radiation |
| 02/27/1990 | US4903374 Apparatus for determining quantities of fiber conveyed through a duct |
| 02/22/1990 | WO1990001691A1 Particle assay |
| 02/22/1990 | WO1989010549A3 Radiation/microbe bioassay |
| 02/21/1990 | CN1006950B Method and apparatus for editing particle produced electrical pulses |
| 02/20/1990 | US4902132 Automated capillary scanning system |
| 02/20/1990 | US4901860 Apparatus for testing and classifying cigarettes or the like |
| 02/20/1990 | US4901416 Control system for manufacturing enhanced tubes |
| 02/14/1990 | EP0354861A1 Apparatus, use and process for producing a regulator of a very low gas flow with a sonic flow velocity for measuring gas adsorption and desorption |
| 02/13/1990 | US4901024 Apparatus for analyzing and separating particles and a system using the same |
| 02/13/1990 | US4900515 Arrangement for determining blood cell sedimentation rate |
| 02/08/1990 | WO1990001155A1 A test method for determination of moisture vapor transmission rate of absorbent materials |
| 02/08/1990 | WO1990000915A1 Solid aerosol generator |
| 02/07/1990 | EP0353524A2 Apparatus for testing the water impermeability of cloths |
| 02/07/1990 | EP0353504A2 Automatic structure analyzing/processing apparatus |
| 02/06/1990 | US4899047 Method and apparatus for selectively detecting one of two immiscible liquids in the presence of the other liquid |
| 02/06/1990 | US4898020 Method and apparatus for detecting and eliminating entrapped gas bubbles in a thick film coating |
| 02/05/1990 | EP0248840A4 An apparatus and method for analyses of biological specimens. |
| 02/01/1990 | DE3925135A1 Sample agglutination test - in diffusion separators of centrifuge based on optical density |
| 01/31/1990 | EP0352922A2 An improved test and apparatus for determining smoke emissivity of a fuel |
| 01/31/1990 | EP0243481B1 Measuring head for the measurement of the porosity of a moving web |
| 01/30/1990 | US4897549 Method of measuring pore diameters by positronium decay |
| 01/30/1990 | US4896967 Motility scanner and method |
| 01/30/1990 | US4896966 Motility scanner and method |
| 01/30/1990 | US4896961 Particle analyzing apparatus |
| 01/30/1990 | US4896546 Liquid metering and transfer valve assembly |
| 01/26/1990 | EP0245466A4 Analysis method and apparatus for biological specimens. |
| 01/24/1990 | EP0352203A2 Method and apparatus for simultaneously measuring in a pipe the density, the concentration, the flowing rate, the delivery and the temperature of a liquid or a pasty fluid by ultrasonic transmission |
| 01/24/1990 | EP0352126A2 An inlet for a high volume particle sampler |
| 01/24/1990 | CN1039123A Uv scanning system for centrifuge |
| 01/23/1990 | US4896048 Scattering-type particle detection device for use in high temperature process chambers |
| 01/23/1990 | US4896047 Method and apparatus of periodically obtaining accurate opacity monitor readings of an exhaust gas stream |
| 01/23/1990 | US4895446 Particle detection method and apparatus |
| 01/23/1990 | US4895034 Powder disperser for aerodynamic particle sizing system |
| 01/18/1990 | DE3841892C1 Device for detecting fog |
| 01/18/1990 | DE3824478C1 Method and device for the determination of the density of micropores in insulator layers on conductive or semiconductive substrates |
| 01/17/1990 | EP0350837A2 Cell analyzer |
| 01/17/1990 | EP0350768A2 Particle size measuring instrument with direct scattered light detection |
| 01/16/1990 | US4894529 Particle detector for detecting contaminant particles in a liquid |
| 01/16/1990 | US4894343 Chamber plate for use in cell fusion and a process for production thereof |
| 01/16/1990 | US4893935 Apparatus and method for optical density measurements of biomass processes |
| 01/16/1990 | US4893929 Particle analyzing apparatus |
| 01/16/1990 | US4893928 Highly sensitive particle size detection device having noise cancellation |
| 01/16/1990 | US4893886 Non-destructive optical trap for biological particles and method of doing same |
| 01/16/1990 | US4893504 Method for determining capillary pressure and relative permeability by imaging |
| 01/10/1990 | EP0350409A1 Apparatus for measuring dust present on a surface |
| 01/10/1990 | EP0349625A1 Surface measuring-instrument. |
| 01/09/1990 | US4893320 Apparatus for counting particles attached to surfaces of a solid |
| 01/09/1990 | US4892621 Method and device for measuring permeability/penetrability of fabric in a paper machine |
| 01/08/1990 | EP0319543A4 Method and apparatus for automated assessment of the immunoregulatory status of the mononuclear leukocyte immune system. |
| 01/08/1990 | EP0285657A4 Debris detector. |
| 01/04/1990 | DE3821823A1 Method for determining the air permeability of water-conducting soils, and a system and devices for carrying it out |
| 01/03/1990 | EP0348469A1 Method of automatic particle analysis and means for performing the analysis. |
| 01/03/1990 | CN1038554A High-voltage generator with low current loss |
| 01/02/1990 | US4891575 Particle detector using inlet and outlet pipes as electrodes |