Measuring and testing – With fluid pressure – Porosity or permeability
Reexamination Certificate
2006-10-10
2009-11-10
Rogers, David A. (Department: 2856)
Measuring and testing
With fluid pressure
Porosity or permeability
C210S085000, C210S087000, C210S090000
Reexamination Certificate
active
07614279
ABSTRACT:
A method for determining pore structure characteristics of a filtration cartridge includes the steps of placing a porometry test location isolating device in sealing contact with the filtration cartridge at a desired test location, increasing the porometer test gas pressure until the test gas flows through the cartridge at the test location, measuring the flow rate of the test gas through the test location as a function of differential pressure, reducing the test gas pressure to atmospheric pressure, wetting the test location with a wetting liquid, increasing the test gas pressure again until the test gas flows through the cartridge at the test location, measuring differential gas pressure and gas flow rates through the test location, and converting the measured gas flow rates and differential pressures into through pore throat diameters, largest through pore throat diameter, mean flow through pore throat diameter, pore distribution, and gas permeability of the cartridge.
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Gupta Krishna M.
Jena Akshaya
Aquilla Thomas T.
Porous Materials Inc.
Rogers David A.
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