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Class Information
Number: 73/38
Name: Measuring and testing > With fluid pressure > Porosity or permeability
Description: Subject matter for determining through the direct application of fluid under pressure the porosity (i.e., volume of interstices) of solids, the fineness of powdered materials, or action of filters; also, the determining of permeability (i.e., the passage or diffusibility of fluids through a specimen).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7623968 |
Determination of porosity and fluid saturation of underground formations |
Nov. 24, 2009 |
| 7614279 |
Determination of pore structure characteristics of filtration cartridges as a function of cartridge length |
Nov. 10, 2009 |
| 7614280 |
Quantitative fit test system and method for assessing respirator biological fit factors |
Nov. 10, 2009 |
| 7603252 |
Method and apparatus for calculating effective volume of diesel particulate filter |
Oct. 13, 2009 |
| 7594425 |
Methods and systems for integrity testing of porous materials |
Sep. 29, 2009 |
| 7592178 |
Filter integrity tester |
Sep. 22, 2009 |
| 7591200 |
Method of detecting high-concentration region direction of pollutant in soil |
Sep. 22, 2009 |
| 7587927 |
Rapid integrity testing of porous materials |
Sep. 15, 2009 |
| 7581430 |
Air velocity apparatus and system |
Sep. 1, 2009 |
| 7584061 |
Device for measuring permeate flow and permeate conductivity of individual reverse osmosis membrane elements |
Sep. 1, 2009 |
| 7578208 |
System and method for generating a gas sample of known and adjustable relative humidity |
Aug. 25, 2009 |
| 7568379 |
Method of measuring porosity by means of ellipsometry and device for implementing one such method |
Aug. 4, 2009 |
| 7569182 |
Filter assembly for a reprocessor |
Aug. 4, 2009 |
| 7555934 |
Fluid permeation testing apparatus employing mass spectrometry |
Jul. 7, 2009 |
| 7552621 |
Method and apparatus for v-bank filter bed scanning |
Jun. 30, 2009 |
| 7552620 |
Fluid permeation testing method employing mass spectrometry |
Jun. 30, 2009 |
| 7517693 |
Method and apparatus for determining a molecular descriptor of absorption for a candidate compound |
Apr. 14, 2009 |
| 7509840 |
Centrifuge permeameter for unsaturated soils system |
Mar. 31, 2009 |
| 7469572 |
Measurement of moisture vapor transfer rate |
Dec. 30, 2008 |
| 7464582 |
Method for determining the inlet capillary pressure of a porous medium |
Dec. 16, 2008 |
| 7458251 |
Method for determining solvent permeability of films |
Dec. 2, 2008 |
| 7453266 |
Electronic humidity chamber for vapor desorption to determine high capillary pressures |
Nov. 18, 2008 |
| 7430895 |
Apparatus and method for inspecting quality of molded foam parts |
Oct. 7, 2008 |
| 7421885 |
Method for characterizing porous low dielectric constant films |
Sep. 9, 2008 |
| 7412875 |
Centrifuge permeameter for unsaturated soils system |
Aug. 19, 2008 |
| 7406857 |
Electronic humidity chamber for vapor desorption to determine high capillary pressures |
Aug. 5, 2008 |
| 7401499 |
Apparatus for permeability analysis |
Jul. 22, 2008 |
| 7401501 |
Method and apparatus for determining liquid absorption of aggregate |
Jul. 22, 2008 |
| 7388373 |
Method of determining the permeability of an underground medium from NMR measurements of the permeability of rock fragments from the medium |
Jun. 17, 2008 |
| 7384510 |
Apparatus and method for determining the permeability of a circulating band in a paper machine |
Jun. 10, 2008 |
| 7367218 |
Centrifuge permeameter for unsaturated soils system |
May. 6, 2008 |
| 7368053 |
Membrane zeta potential measuring system |
May. 6, 2008 |
| 7360400 |
Device, method and computer programme product for carrying out integrity tests on filter elements |
Apr. 22, 2008 |
| 7357859 |
Methods and systems for membrane testing |
Apr. 15, 2008 |
| 7334490 |
Method and apparatus for v-bank filter bed scanning |
Feb. 26, 2008 |
| 7333892 |
Method of determining multiphase flow parameters of a porous medium taking account of the local heterogeneity |
Feb. 19, 2008 |
| 7320760 |
Cleaning efficiency testing method and apparatus for a filter in a filtering system |
Jan. 22, 2008 |
| 7319332 |
Method for determining of the formation factor for a subterranean deposit from measurements on drilling waste removed therefrom |
Jan. 15, 2008 |
| 7284411 |
Method of making a gas diffusion media and quality controls for same |
Oct. 23, 2007 |
| 7281422 |
Method for borehole conductivity profiling |
Oct. 16, 2007 |
| 7281410 |
Method for determining an effective peclet number for a membrane adsorber device |
Oct. 16, 2007 |
| 7281409 |
Device, method and computer program product for carrying out integrity tests on filter elements |
Oct. 16, 2007 |
| 7278292 |
Method of assessing the product shelf life in a package |
Oct. 9, 2007 |
| 7257989 |
Method and device for measuring physical characteristics of a solid porous sample |
Aug. 21, 2007 |
| 7257990 |
Accelerated ultralow moisture permeation measurement |
Aug. 21, 2007 |
| 7249491 |
Apparatus for measuring the permeability of a circulating band in a paper machine |
Jul. 31, 2007 |
| 7249424 |
Method and device for controlling the moisture or coating quantity profile in a paper web |
Jul. 31, 2007 |
| 7246515 |
Filtration tester |
Jul. 24, 2007 |
| 7219534 |
Method and apparatus for determining transpiration characteristics of a permeable membrane |
May. 22, 2007 |
| 7216529 |
Method for controlling the integrity of a nanofiltration or reverse osmosis module, or module system |
May. 15, 2007 |
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